2026-05-28T19:57:07Z https://njump.me 🇺🇦 haxadecimal 🚫👑 https://njump.me/npub1sk8ua7ffvg85ugdhj7ddr06j58xzxpdkzsflk5zqszjdw7fet24slrh5th https://files.mastodon.social/accounts/avatars/000/027/729/original/95248bda6f9a51c7.jpg https://files.mastodon.social/accounts/avatars/000/027/729/original/95248bda6f9a51c7.jpg https://njump.me/nevent1qqspk9wyzvynferz0e8xudxd9fmfql0437epkwm284le0vsd43em08szyzzclnhe993q7n3pk7te45dl22sucgc9kc2p876sgzq2f4me89d2k5s8gcc In reply to <a href='/nevent1qqsgerwawh4akglskxj4e4vdhugdttd8g9yzplyqys7sxx37tunv4hglzz4u2'>nevent1q…z4u2</a><br/>_________________________<br/><br/>And that is ONLY the console and CE (maintenance) panels. The CPU (7101) was nineteen frames, of which were 20 inches wide, 48 inches deep, and 69 inches tall, except for one frame on the end, which was wider. The CPU weighed 26,290 lb.<br/>That did not include the necessary motor-generator set, power distribution unit, core memory units, or peripherals. 2026-04-17T01:04:57Z https://njump.me/nevent1qqsx9lyxkkknzmdulvrv2t9uzwmwafrjjuxcl5tl9hcv4gfr547dmgszyzzclnhe993q7n3pk7te45dl22sucgc9kc2p876sgzq2f4me89d2kuhdczw In reply to <a href='/nevent1qqs0sh7slehdnw6avkr7cuw8jpceht963pyu5z4jvnr7m86ks47czwqwcc47h'>nevent1q…c47h</a><br/>_________________________<br/><br/>They marked the case as &#34;resolved&#34; and closed the chat.<br/>Maybe it&#39;s time to switch brands. 2026-03-23T19:22:47Z https://njump.me/nevent1qqszns2z094rkgvn3nyjc89l2vv5mwc79663a4xqqphvd9s22m38jwgzyzzclnhe993q7n3pk7te45dl22sucgc9kc2p876sgzq2f4me89d2k0urn3r On chat with a Google &#34;representative&#34; (AI?) about why a device purchased new from Best Buy 11 days ago is not eligible for a Pixel Care+ protection plan. They/it keep telling me that Pixel Care+ is in a phased rollout and not yet available for my device, which is bullshit.<br/>I&#39;ve asked to speak to a supervisor. Will that be AI also? 2026-03-23T18:46:23Z https://njump.me/nevent1qqs84h60t6szpqhx52x7vjtjnu85qsnxzvn2ulualq5qvjn367u24nszyzzclnhe993q7n3pk7te45dl22sucgc9kc2p876sgzq2f4me89d2kst524h I got an EE at a place I worked a few years ago really angry with me, when I said my usual thing about &#34;EE is trivial, you just wire together all the pins that have the same name.&#34; He must have known I was joking, but still reacted badly. 2026-01-17T02:13:11Z https://njump.me/nevent1qqsrw33yjdj6fg74upz39tg6zjcrr2klhwjdhr0znrum599t6cxwllgzyzzclnhe993q7n3pk7te45dl22sucgc9kc2p876sgzq2f4me89d2km885jl In reply to <a href='/nevent1qqs2ds983w5ztng58wjmcvs3wm37v5vxchx79k8dm90lqeysln5zh4c2ezejy'>nevent1q…zejy</a><br/>_________________________<br/><br/>Starship Troopers 2026-01-15T06:17:43Z https://njump.me/nevent1qqswus6q59jaesnmexhaz9au6uxlxl8c98ue6f3xpx5czpumutfha3czyzzclnhe993q7n3pk7te45dl22sucgc9kc2p876sgzq2f4me89d2kkpfn2x In reply to <a href='/nevent1qqs9rgaxndj4e2tkl406h2qhccmtxdafvc7ldn4j6ggu3ney44tmjlslajexj'>nevent1q…jexj</a><br/>_________________________<br/><br/>COBOL isn&#39;t particularly difficult. Just annoying. 2026-01-06T00:44:10Z https://njump.me/nevent1qqs8583tt3tf2xlfzny9qj7ypwspn8t6j95xcwhexyrwesv9l0vc2xszyzzclnhe993q7n3pk7te45dl22sucgc9kc2p876sgzq2f4me89d2ktfce56 In reply to <a href='/nevent1qqs92cez8umqx5wl4385utn07d4r7hy697umx37xtw7052c86mn4rmgqd4259'>nevent1q…4259</a><br/>_________________________<br/><br/>Tektronix includes in the 11301/11302 manual, under &#34;physical characteristics&#34;, BOTH the weight and mass of the scope, in appropriate units: weight in Newtons and pounds, and mass in kilograms and slugs. I don&#39;t recall seeing this fone in any other equipment manual; most such manuals incorrect conflate weight with mass.<br/>Surprisingly, however, this manual fails to state the conditions under which the specified weights are relevant.<br/> <img src="https://files.mastodon.social/media_attachments/files/115/841/884/610/675/253/original/6156ea2fcbbaf0cd.jpg"> <br/> 2026-01-05T10:00:54Z https://njump.me/nevent1qqs92cez8umqx5wl4385utn07d4r7hy697umx37xtw7052c86mn4rmgzyzzclnhe993q7n3pk7te45dl22sucgc9kc2p876sgzq2f4me89d2k8je6rm In reply to <a href='/nevent1qqs02mfau20c9r9cxllg5zzt684ca6y2hykss6hsljjlq3d2c8mhq6q4xsxyt'>nevent1q…sxyt</a><br/>_________________________<br/><br/>Most of the time, my Rigol 350 MHz MSO5354 (upgraded 5074) will still be my workhorse, and of course it&#39;s much smaller, lighter, and more portable, and I can get digital screen captures from it. There are rare times that I&#39;ve needed more than 350 MHz bandwidth, so now I have that covered. I&#39;ll have to get some 500 MHz probes. 2026-01-05T09:19:44Z https://njump.me/nevent1qqs02mfau20c9r9cxllg5zzt684ca6y2hykss6hsljjlq3d2c8mhq6qzyzzclnhe993q7n3pk7te45dl22sucgc9kc2p876sgzq2f4me89d2kevkfcy Also tonight I picked up the Tektronix 11302 analog storage oscilloscope a friend offered me a while back. It&#39;s a 500 MHz mainframe with three slots for 11 series plugins. But it&#39;s not just any old analog storage scope. This has a microchannel plate (like the Tek 2467 portable 250 MHz), and has IEEE-488 and RS-232 ports for control. It also has an amazing self-calibration system, all the way to the display graticule. 2026-01-05T09:15:18Z https://njump.me/nevent1qqs8n7rwcf0m8ys9xkersh6mgj2latyy34hz08xtp4z7zt26n0zr3tszyzzclnhe993q7n3pk7te45dl22sucgc9kc2p876sgzq2f4me89d2kx9vh7v Friends and I just watched Star Trek VI: The Undiscovered Country tonight. While I still consider The Wrath of Khan to be the best of the series, IMHO VI is very good, and generally underappreciated. 2026-01-05T08:34:17Z https://njump.me/nevent1qqsd5yc9n8s427tmyjgwye7e6aw2tzef20xkv06wm93pqfvdf54pf8gzyzzclnhe993q7n3pk7te45dl22sucgc9kc2p876sgzq2f4me89d2k9ef3qj Someone asked me by email to make sure I package an item securely in &#34;bubble warp&#34;. I didn&#39;t think warp technology was going to be invented until the 22nd century. 2026-01-03T01:57:52Z https://njump.me/nevent1qqs05jfy4g2mphlffdytsk2y6lzhgs20jewv5jswap28488sk2atpdczyzzclnhe993q7n3pk7te45dl22sucgc9kc2p876sgzq2f4me89d2kfns27x In reply to <a href='/nevent1qqsfg4m09tqyrr8yh0ak9l2t3ny6ep65sas2h0svaeuqq0rnrlkk4gc76zl2n'>nevent1q…zl2n</a><br/>_________________________<br/><br/>So-called &#34;AI&#34; is just like the internet:<br/>Garbage In, Garbage Out.<br/><br/>At least the name of the so-called &#34;AI&#34; is usually half-right, though there have been some notable exceptions even to that.<br/><br/>Sturgeon was an optimist. 2025-12-28T08:29:16Z https://njump.me/nevent1qqsxnmx4xsw9tvmxzvzrhkryqpjhtguj28wg6k93e3u2dhf3xptzmaszyzzclnhe993q7n3pk7te45dl22sucgc9kc2p876sgzq2f4me89d2k4ksk2j In reply to <a href='/nevent1qqsgjvdc0lz6647hkqrlrwl7qy3qey9qxlfrgsevmepzygh9c765tlcwwtyfe'>nevent1q…tyfe</a><br/>_________________________<br/><br/>Many RISC processors don&#39;t have a hardware stack, and depend on software to maintain one if desired, which of course it almost always is.<br/>On an interrupt or other exception, they capture just the content of only a few registers (including the PC) into registers reserved for that purpose, and then the handler software can push them onto a stack.<br/>(I&#39;m not advocating that you do this.) 2025-12-20T05:09:29Z https://njump.me/nevent1qqsrw08nf6wufda7hear45w0ggytk0y8s2t5tq2x39z8a4n987uu4jgzyzzclnhe993q7n3pk7te45dl22sucgc9kc2p876sgzq2f4me89d2k7k8pny In reply to <a href='/nevent1qqsthuzymlf67j8fxu37tz7ax5e80mwyckara4ej5vy56y2jk29kxhg6uxqdk'>nevent1q…xqdk</a><br/>_________________________<br/><br/>I&#39;m not criticizing. I understand the fun of designing something minimal.<br/><br/>If you had interrupts, then you&#39;d need data paths to store X and Y, possibly by transferring them to A. 2025-12-19T23:49:43Z https://njump.me/nevent1qqstt5q36c6m5atgvmetytn03df85vksfl4945zv5ry6mqpe9qltutgzyzzclnhe993q7n3pk7te45dl22sucgc9kc2p876sgzq2f4me89d2k45mk3u In reply to <a href='/nevent1qqsvujjfl69xthh56z70q4vthkx9anuf3ccuw99n8j3c0ey5a59e5dsqnpx8d'>nevent1q…px8d</a><br/>_________________________<br/><br/>No interrupts, I assume? 2025-12-19T22:36:50Z https://njump.me/nevent1qqsq537d2qhfnlwv5mufcr7xdfnwyzluz4wn8ra28g50hnkah3jrehczyzzclnhe993q7n3pk7te45dl22sucgc9kc2p876sgzq2f4me89d2k7r0z33 In reply to <a href='/nevent1qqsqsm3kkpf4s7p0j7ddapj67mahu0xvfn43679nr38eaw28m707fxsf2ulfp'>nevent1q…ulfp</a><br/>_________________________<br/><br/>Google appears to have a lot of money. Maybe we could convince them to fund an open-source privacy-respecting browser.<br/><span itemprop="mentions" itemscope itemtype="https://schema.org/Person"><a itemprop="url" href="/npub18ak6r2run0k5vadryvdp5nuzscqkummqp3z5m3dzz24zfepnudwsf3untn" class="bg-lavender dark:prose:text-neutral-50 dark:text-neutral-50 dark:bg-garnet px-1"><span>ploum</span> (<span class="italic">npub18ak…untn</span>)</a></span> 2025-12-17T03:22:22Z https://njump.me/nevent1qqsg4kl23qwre20vx7c7z09qnf2vuaevrw370rg22nw0984u62gwg3gzyzzclnhe993q7n3pk7te45dl22sucgc9kc2p876sgzq2f4me89d2k2xs2ld In reply to <a href='/nevent1qqs8vftvpqsqtclk52c6vl0x307w0mahac4ql9hkdq7q0w9g30q5eycxgq38d'>nevent1q…q38d</a><br/>_________________________<br/><br/>That was the point of the poll. I am writing an assembler for an architecture for which there is no (publicly) documented assembly language. 2025-12-15T22:03:30Z https://njump.me/nevent1qqs0ydqxm3senruzk0xzchz8sadrjdnqd4h7qv23k56dge8cawggqyqzyzzclnhe993q7n3pk7te45dl22sucgc9kc2p876sgzq2f4me89d2k246725 preferred assembly language operand order 2025-12-12T04:21:10Z https://njump.me/nevent1qqsrspza3a7hs3mdezmls39cxprsl2fl7a9pzvhz4h0kat3lt0m3zeszyzzclnhe993q7n3pk7te45dl22sucgc9kc2p876sgzq2f4me89d2kkyla90 [@mos_8502](<a href="https://studio8502.ca/@mos_8502">https://studio8502.ca/@mos_8502</a> ) <br/>We&#39;ve had tri-state buffers since the 1970s. Isn&#39;t it about time for quad-state buffers? 2025-12-11T02:33:29Z https://njump.me/nevent1qqs9kttykrxthw77j7f2px5vrlh6r7u7nv5e2upnyp4q8nwe3yanpnszyzzclnhe993q7n3pk7te45dl22sucgc9kc2p876sgzq2f4me89d2k96g60z In my ongoing research and development of computer peripherals, I have some improved types of printers, for which I am preparing patent applications:<br/>* dot-vector printer (saves space!)<br/>* daisy cutter printer<br/>* chain saw printer<br/>* commuter train printer<br/>* pulse jet printer 2025-12-10T01:06:27Z https://njump.me/nevent1qqszvqx9kpxn89q7q9zh4m8ppmx6lyaj8d8sjz08gfuhvrd8d7xuntqzyzzclnhe993q7n3pk7te45dl22sucgc9kc2p876sgzq2f4me89d2k4uvd5d In reply to <a href='/nevent1qqstq2l0wezaemym06yu3ynfan7cupel2pum8xhhxnlhe74ex8lwsjcyatv2z'>nevent1q…tv2z</a><br/>_________________________<br/><br/>Money sent!<br/>:-)<br/>Many years ago, I really could have used a means to have like-minded people see what I was doing, and maybe offer a little support for my projects. That wasn&#39;t really possible then, and it&#39;s not like I have a ton of money now, but I like to occasionally support people working on interesting projects. 2025-12-08T23:57:33Z https://njump.me/nevent1qqsgks2axr4x3nqvt7s9m2frjk624g2k5t97y6nps58xhvcx28n0pngzyzzclnhe993q7n3pk7te45dl22sucgc9kc2p876sgzq2f4me89d2ky8eg6s In reply to <a href='/nevent1qqsyueuk53jz2yzp9ssglljd30msf95v8k5wuwevq2j6nrq80vcafws6nymz5'>nevent1q…ymz5</a><br/>_________________________<br/><br/>The spikes are essentially a deciding race. I&#39;ll study it more. In the mean time, try inverting the clock into the FFs, but not the AND gates, and see if that&#39;s better.<br/>The spikes also might be a result of simulated devices not having real propagation delay, but I wouldn&#39;t like to count on that. 2025-12-05T00:08:16Z https://njump.me/nevent1qqsyfss06mn7lsxj7vzuqkjdqx33tw9s2dwwmn8qrccff478gn90g8czyzzclnhe993q7n3pk7te45dl22sucgc9kc2p876sgzq2f4me89d2k09cehy In reply to <a href='/nevent1qqsxwsr58hcn0cdp78pqpstmt8jdxkyu6gx5n8nn0ps2g8acdvehuqcdcrqfe'>nevent1q…rqfe</a><br/>_________________________<br/><br/>Ignore the top two FF in the &#39;362 diagram; they&#39;re an extra divide-by-four for its crystal oscillator, unrelated to the divide-by-four used for the four-phase clock generator. 2025-12-04T22:26:00Z https://njump.me/nevent1qqsxwsr58hcn0cdp78pqpstmt8jdxkyu6gx5n8nn0ps2g8acdvehuqczyzzclnhe993q7n3pk7te45dl22sucgc9kc2p876sgzq2f4me89d2k5rhkz2 In reply to <a href='/nevent1qqsgu8xvcgeclgdqa8m5td6xyazdzf0nedryyzmlz46g9ad5yzdxp8gyw8raj'>nevent1q…8raj</a><br/>_________________________<br/><br/>In fact, the same thing can be done with the &#39;74 FF. See the TI datsheet for the 74LS362(TIM9904), functional block diagram.<br/>And obviously you can use a three input NAND (74x10) instead of AND, if you want active low phase output. 2025-12-04T22:22:43Z https://njump.me/nevent1qqsgu8xvcgeclgdqa8m5td6xyazdzf0nedryyzmlz46g9ad5yzdxp8gzyzzclnhe993q7n3pk7te45dl22sucgc9kc2p876sgzq2f4me89d2k2q8wye In reply to <a href='/nevent1qqszdg550jysv8duatl9aqcjt2dcrv6nccdfeyqh0ar0gzkm5862zasmekczf'>nevent1q…kczf</a><br/>_________________________<br/><br/>Here&#39;s an untested idea for a three-chip TTL solution with no startup issues and needing no power-on reset, using a &#39;109 dual J-/K edge triggered FF, and two &#39;11 three-input AND gates. Being an off-the-cuff idea, it definitely needs to be simulated.<br/>I&#39;ve always liked the &#39;109 because it is more flexible than the &#39;74, but if you tie J and /K together, it behaves exactly like the &#39;74.<br/> <img src="https://files.mastodon.social/media_attachments/files/115/663/591/662/154/163/original/50cdc717b692ab9a.jpg"> <br/> 2025-12-04T22:16:44Z https://njump.me/nevent1qqszdg550jysv8duatl9aqcjt2dcrv6nccdfeyqh0ar0gzkm5862zaszyzzclnhe993q7n3pk7te45dl22sucgc9kc2p876sgzq2f4me89d2k5gx79l In reply to <a href='/nevent1qqsx2drq4ntaahr58nyqmrhcl5utp2xzdujgz2cmt6gl9eydycgxu6q2alzzy'>nevent1q…lzzy</a><br/>_________________________<br/><br/>On further study, it looks like the design is prone to startup problems in general, because flip-flops power up in random states in real life, but not in simulation. But even in simulation, inverting /Q should have the same result as using Q.<br/>If there is apower on clear to all four of the flops in the ring, then you&#39;d want feedback from /Q _directly_ to D of the first one, as otherwise you&#39;d just cycle the same value continuously. 2025-12-04T21:51:02Z https://njump.me/nevent1qqs0ks6ukqkqy99kn42v4vj4vtvzdlzcm035k4gusynrwkjsdtynmgszyzzclnhe993q7n3pk7te45dl22sucgc9kc2p876sgzq2f4me89d2k5uq6mu In reply to <a href='/nevent1qqsz8578pew9e4h48lhvjrg3s6c9qprqnserhqac06mvq7572w24rysw7370p'>nevent1q…370p</a><br/>_________________________<br/><br/>The obvious drawback is that the PIC needs to be programmed, but iit&#39;s one chip instead of five. 2025-12-04T21:47:21Z https://njump.me/nevent1qqsz8578pew9e4h48lhvjrg3s6c9qprqnserhqac06mvq7572w24ryszyzzclnhe993q7n3pk7te45dl22sucgc9kc2p876sgzq2f4me89d2kyw7lzz In reply to <a href='/nevent1qqsq5mk5q9jzax9nfapt4jrnhlvyme2ga7xhhx4ft6vx6ge0lsnky6sf8gtrw'>nevent1q…gtrw</a><br/>_________________________<br/><br/>To a casual glance, that looks perfectly fine, though I wonder whether you really need the inverter from /Q of the right flop rather than just using Q.<br/>The last time I needed a four-phase non-overlapping clock, to drive a Western Digital MCP1600 series chips (e.g., LSI-11, Pascal Microengine), I used a small PIC microcontroller, which is quite inexpensive and available in a 14-pin DIP.<br/> <a href="https://github.com/brouhaha/4phaseclk">https://github.com/brouhaha/4phaseclk</a><br/><a href="https://www.flickr.com/photos/_brouhaha_/albums/72157661646247410/">https://www.flickr.com/photos/_brouhaha_/albums/72157661646247410/</a><br/>1/ 2025-12-04T21:46:03Z https://njump.me/nevent1qqszjmafm9qr397tnnzhfefgmkrvamavj6yjk2kn4esdr8hr8xjv0fszyzzclnhe993q7n3pk7te45dl22sucgc9kc2p876sgzq2f4me89d2k0vza6d In reply to <a href='/nevent1qqsvw99w2s2eglmdx2ld7ak26jzv2tgnvrrvyrhvkn3cpudajq34f9cuz58jp'>nevent1q…58jp</a><br/>_________________________<br/><br/>And all bets are off with virttual inheritance. Even P0149r3 disclaims that. 2025-12-04T04:43:28Z https://njump.me/nevent1qqsvw99w2s2eglmdx2ld7ak26jzv2tgnvrrvyrhvkn3cpudajq34f9czyzzclnhe993q7n3pk7te45dl22sucgc9kc2p876sgzq2f4me89d2ka4cuw7 I found and fixed my most recent C++ issue. It wasn&#39;t in the code I was working on at all; that just exposed an extremely stupid thing I&#39;d done elsewhere.<br/>Up-casting member pointers to a base type that doesn&#39;t have the member in question seems to work fine in GCC, although I think it might officially be UB, and that might be changed to not be UB in C++26 (P0149r3).<br/>Obviously I can only actually dereference the member pointer with the correct object type. 2025-12-04T04:42:50Z https://njump.me/nevent1qqszu0zk89v6r8nz2u3zg3dgf7e4h9r9nj9kqpa7kwef04p4ehdpxdczyzzclnhe993q7n3pk7te45dl22sucgc9kc2p876sgzq2f4me89d2kffegy8 But I like MATE! I don&#39;t want to switch!<br/> <img src="https://files.mastodon.social/media_attachments/files/115/657/700/580/793/829/original/cb1dc24fde3fed32.jpg"> <br/> 2025-12-03T21:15:12Z https://njump.me/nevent1qqsgu6wjrjsccskxdjcdgc0v97hk4pxnu2uzgfup3h84080pvezfrqqzyzzclnhe993q7n3pk7te45dl22sucgc9kc2p876sgzq2f4me89d2kv3y6sg In reply to <a href='/nevent1qqs0axdm3d6jcy9ccjdgkukx45595x9tlakwp28hs906fa3dcdjpvvqu2yt5h'>nevent1q…yt5h</a><br/>_________________________<br/><br/>Bit flip errors are the primary reason for use of ECC for on-die caches on high-end CPUs (i.e., x86, ARM 64-bit, but not small microcontrollers), and in DRAM memory systems in servers. Bit flips can occur in DRAM surprisingly frequently, because bits are stored by very few electrons.<br/>I use ECC memory even in my desktop and laptop for that reason. 2025-11-29T09:46:31Z https://njump.me/nevent1qqs0axdm3d6jcy9ccjdgkukx45595x9tlakwp28hs906fa3dcdjpvvqzyzzclnhe993q7n3pk7te45dl22sucgc9kc2p876sgzq2f4me89d2k9j80ak In reply to <a href='/nevent1qqsy0pwcvf4yfhufep27tq7s4nuhrrtezflx35h7q920gjd4mut7npsuelxlx'>nevent1q…lxlx</a><br/>_________________________<br/><br/>However, radiation of various sorts can cause register and RAM bit flips, or signal errors, without causing CMOS latchup. 2025-11-29T09:42:13Z https://njump.me/nevent1qqsy0pwcvf4yfhufep27tq7s4nuhrrtezflx35h7q920gjd4mut7npszyzzclnhe993q7n3pk7te45dl22sucgc9kc2p876sgzq2f4me89d2k7r228j In reply to <a href='/nevent1qqsyxksd8dtap3763szdkd5qg49r49d80ftjpcgv5pxwh6mc29lf6mg3mg4wu'>nevent1q…g4wu</a><br/>_________________________<br/><br/>As I understand it, CMOS latchup is caused by triggering parasitic SCR structures (PNPN), and that standard CMOS process design rules make it extremely unlikely to be internally triggered under normal operating conditions. An SEU can inject enough energy to trigger a parasitic SCR.<br/>SOS and SOI CMOS fabrication eliminate the parasitic SCRs, but are typically only used for mil/aerospace due to expense. 2025-11-29T09:40:16Z https://njump.me/nevent1qqsr2yn8d6h3mlt6angjzhxkhycuzr908gy0e509jhjcrf4pnpwmanczyzzclnhe993q7n3pk7te45dl22sucgc9kc2p876sgzq2f4me89d2kgqv772 In reply to <a href='/nevent1qqsveqe378h35z4pcdkkf3zvu9wly2lp6t0t4n9v0nnsclayqmw6nxspz0p5s'>nevent1q…0p5s</a><br/>_________________________<br/><br/>That a policy or plan can&#39;t possibly result in their stated objectives has never stopped the Republican Party, or their supporters, from anything, no matter how misguided. 2025-11-28T08:12:50Z https://njump.me/nevent1qqsyjk80zh6c64phqdlckg095d2qqmws37u98zvx3h2950u55sv5nhgzyzzclnhe993q7n3pk7te45dl22sucgc9kc2p876sgzq2f4me89d2ksq8448 My oscilloscope seems to be getting closer to the edge of the bench every time I use it. I don&#39;t want it to fall, so I moved it back in a few inches. Maybe the bench isn&#39;t quite level? I&#39;ve not before had firsthand experience of scope creep. 2025-11-28T03:24:07Z https://njump.me/nevent1qqs0dpjzl3ljwlyng92resc95s7wpg4ncftjvaye49apjyux6u995nqzyzzclnhe993q7n3pk7te45dl22sucgc9kc2p876sgzq2f4me89d2kk7xunu &#34;Soon AI agents will be writing better, cleaner code than any mere human can, just like compilers can write better assembly.&#34;<br/>— Nick Hodges, in Infoworld, 2025-11-26<br/><a href="https://www.infoworld.com/article/4096265/writing-code-is-so-over.html">https://www.infoworld.com/article/4096265/writing-code-is-so-over.html</a><br/><br/>I look forward to a contined consulting revenue xtream, fixing the disasters that result from managers believing this bulles***.<br/><br/>He likens this to compileds writing better assembly code than humans. That works because the semantic level of high level languages like C, C++, etc. are not that far removed<br/>1/ 2025-11-26T23:31:39Z https://njump.me/nevent1qqszjerdnncwpumvuvjjgn0mtzq8qq9jqejkqm7a54pwrwpytpjmc3gzyzzclnhe993q7n3pk7te45dl22sucgc9kc2p876sgzq2f4me89d2kqwfsn0 In reply to <a href='/nevent1qqstmn2ugfzfs2y58e44aq2p5xkt09kpsqwq7esdytr2qm0mfntp76gzgynr4'>nevent1q…ynr4</a><br/>_________________________<br/><br/>SSDs are rated to retain data unpowered for six months for consumer grade devices, and for three months for enterprise grade. They need to stay powered up so that they can scrub (refresh) memory cells that lose their charge over time. This is because each data bit is actually stored by a surprisingly small number of electrons in modern NAND flash devices.<br/>Spinning drives, despite their potential mechanical failure modes, are actually better for cold storage than SSDs. 2025-11-23T00:25:51Z https://njump.me/nevent1qqsfeznpyjd2kmxwtfcsefl8gg3pa68snzd38pmmcdqnjvn4md85f8gzyzzclnhe993q7n3pk7te45dl22sucgc9kc2p876sgzq2f4me89d2kmkhxud In reply to <a href='/nevent1qqs8aucxlzuaasqupu0k239494gvmtjkds29sj95f4avyh3fm3ycflspr4g4f'>nevent1q…4g4f</a><br/>_________________________<br/><br/>Some of us care that our browser is open source, in other words, not loaded up with vendor spyware/malware. It might be reasonable to run the open-source Chromium, but not actual closed-source Google Chrome. 2025-11-18T09:25:43Z https://njump.me/nevent1qqsrur6cr6sanztax3t24gnw27fg307ucs9488rmt3cgsqwuddt9mcczyzzclnhe993q7n3pk7te45dl22sucgc9kc2p876sgzq2f4me89d2kus85l0 In reply to <a href='/nevent1qqsymzlpshsmxarjeygecnnu25eyr2qraxt0772dlt0d4ex4pvy3yrg5zn903'>nevent1q…n903</a><br/>_________________________<br/><br/>Sure, I don&#39;t mind the occasional tech question. Unfortunately, It&#39;s hard to know what&#39;s gone wrong. Since it&#39;s both HDMI and network, normally unrelated functions, that suggests that it might be a software failure, and that reinstalling the device drivers, or the whole OS, might fix it.<br/>Or it could be corrupted BIOS settings.<br/>On the other hand, depending on how the machine is built, there might be e.g. a bad connection to a board responsible for both.<br/>Sorry I&#39;m not more helpful. 2025-11-16T10:33:22Z https://njump.me/nevent1qqs24ynmnjv5tv6kvukyljujcqarpszwn0hmevphdqpgfxcksh955fszyzzclnhe993q7n3pk7te45dl22sucgc9kc2p876sgzq2f4me89d2kz99s0u In reply to <a href='/nevent1qqstjhj3tlh9dtlf7an9lm8tevj740dx38sr0y920affyflhgv3wy2g34y340'>nevent1q…y340</a><br/>_________________________<br/><br/>Feel better! 2025-11-16T10:01:16Z https://njump.me/nevent1qqsxzn86dj8yklrl2hw5hdemf0nz7l80tqun4j2rv4gmw8wdqqywfsszyzzclnhe993q7n3pk7te45dl22sucgc9kc2p876sgzq2f4me89d2kp5lfvv In reply to <a href='/nevent1qqstjhj3tlh9dtlf7an9lm8tevj740dx38sr0y920affyflhgv3wy2g34y340'>nevent1q…y340</a><br/>_________________________<br/><br/>Something I&#39;ve had to wait three months for:<br/>* EMG, hoping to determine cause of right shoulder and arm pain<br/><br/>Otherwise, more of the usual:<br/>* work (FPGA stuff in VHDL, somewhat fun)<br/>* programming my own projects, including some new cross-development tools for obscure obsolete microcontrollers<br/>* reverse-engineering 1970s and 1980s calculators<br/>* watching more episodes of Science Fiction Theatre (micd-1950s SF anthology show) 2025-11-16T10:00:50Z https://njump.me/nevent1qqsw9vf4ztnfcfxzt6yflan0s0kchf2wkdlxqqxlcyst9ljfx2ya63szyzzclnhe993q7n3pk7te45dl22sucgc9kc2p876sgzq2f4me89d2kw7dv5c In reply to <a href='/nevent1qqsy3y8seyvzw9mt3mju0ysrysn48wakdv2yeuau2tcquy5f0377slqyekuv2'>nevent1q…kuv2</a><br/>_________________________<br/><br/>Is there a memory expansion header? I think 512MiB is fine, if a daughterboard can add more. 2025-11-09T02:06:30Z https://njump.me/nevent1qqsvvq8ual98ue7rjnqkaelh6ee7fksm8m8ql2pcfgnckrmjqp6ue5gzyzzclnhe993q7n3pk7te45dl22sucgc9kc2p876sgzq2f4me89d2kyqmwhz Germany is now advising people to stock up on cheese and sausages.<br/><br/>This is called the Wurst Käse Scenario. 2025-10-28T07:48:09Z https://njump.me/nevent1qqswwd2x4tasu8jay90tm9wjxr3gf59zmg5ftz3lpczharqvtw03qrszyzzclnhe993q7n3pk7te45dl22sucgc9kc2p876sgzq2f4me89d2k3zpmz3 In reply to <a href='/nevent1qqsrmhk962p4fv6zz2ep6ynkrt8lsu428lm55wgl55u0xctx7wfysqs4k0w0t'>nevent1q…0w0t</a><br/>_________________________<br/><br/>The PDP-11/20 could have been installed in racks with other equipment, but the PDP-11/20 processor and main memory (no peripherals) is a box 10.5&#34; x 19&#34; x 24&#34; and weighing under 100 lb. The IBM 1401 processor and main memory (no peripherals) was 61&#34; x 58&#34; x 31&#34; and weighed 2199 lb, so it is 23x the volume of the PDP-11/20 and around 20x the weight.<br/>Not a very similar size at all. 2025-10-26T22:33:12Z https://njump.me/nevent1qqsza6lhtevkaxmchx9an3q0q4tqzlg3ls6cj5fcj0y8rfmzvf9pyvgzyzzclnhe993q7n3pk7te45dl22sucgc9kc2p876sgzq2f4me89d2k26ehqa In reply to <a href='/nevent1qqsrpq377shqklga3hlknmadyg86vq6prgjms8jdlnhaa32nhrt00lqtu8dpd'>nevent1q…8dpd</a><br/>_________________________<br/><br/>No, DHGR _almost_ fell out automatically from the basic design for 80 column text, just as double lores did. Apparently they realized very soon after the start of production, and before first customer shipment, that a very minor motherboard change would enable it. I am 99.9% certain that no ROM change was required, because the ROM doesn&#39;t even know whether it&#39;s in double mode. 2025-10-25T09:54:15Z https://njump.me/nevent1qqsgekd4h5vhn3rgw29f49hwe7xalu3mdzjv84hn3pymlvrqe26v4tczyzzclnhe993q7n3pk7te45dl22sucgc9kc2p876sgzq2f4me89d2k85r9hq In reply to <a href='/nevent1qqs90fc7jwtrqrkkud6auzg9us27cpxg9j03mrgz0gezkpn33usu5cs7lrn03'>nevent1q…rn03</a><br/>_________________________<br/><br/>If it works on an enhanced IIe, it should work on unenhanced IIe. Nothing in the ROMs is required to make DHGR mode work. All IIe variants with 128K RAM can support DHGR, except for a very small number of unenhanced units that shipped with a very early revision motherboard. 2025-10-25T09:44:30Z https://njump.me/nevent1qqsg2y89w3d3azl4q209q99pzec3aj3l4djjls3zuvucfgavuxxvfrqzyzzclnhe993q7n3pk7te45dl22sucgc9kc2p876sgzq2f4me89d2ktk4gcs I&#39;m thinking about putting everything on a bagel. 2025-10-04T01:49:49Z https://njump.me/nevent1qqsxq935wc39x8w4k5x4uvcptt3s5mydqf27lmnesmjl99fk7r3zszszyzzclnhe993q7n3pk7te45dl22sucgc9kc2p876sgzq2f4me89d2k7q32z4 In reply to <a href='/nevent1qqstt7yn7l2j3xll5yrklvv5kz7t8np4ta9s5t5h0rqcvc62l0l9gecrmg9t0'>nevent1q…g9t0</a><br/>_________________________<br/><br/>Was common on &#34;big computers&#34;, and very handy.<br/>Of course, the 1401 is big only relative to microcomputers and small minicomputers, all of which postdate it. 2025-09-21T07:09:07Z https://njump.me/nevent1qqsdvcd5asqpazl4ym598p0aa3teh0s9my7x3hk9rw4v42z9ag8hlagzyzzclnhe993q7n3pk7te45dl22sucgc9kc2p876sgzq2f4me89d2k8rz85w Humans (Homo Sapiens) are considered to be in the taxonomic order of primates, and family of hominids (great apes).<br/>Lately I&#39;ve come to believe that this is incorrect, and that the primates order should include another family, the not so great apes. 2025-09-15T21:24:25Z https://njump.me/nevent1qqsf9xtq4reytaa8a9t4jvjepuwjau87f0r57l5c52kssfg8yf2kpfgzyzzclnhe993q7n3pk7te45dl22sucgc9kc2p876sgzq2f4me89d2kff7wmj In reply to <a href='/nevent1qqsp5md9gya9gj8vw35365lhl6jpmhp27pqn05jvqq5gh9fkngqtj0qshjkpf'>nevent1q…jkpf</a><br/>_________________________<br/><br/>Give a man a gun, and he&#39;ll rob a bank.<br/>Give a man a bank, and he&#39;ll rob the world. 2025-09-15T09:39:16Z https://njump.me/nevent1qqs93awgpx4jkru0jfe0rzmejf83r754flel2kpyumt6609qe6msx3szyzzclnhe993q7n3pk7te45dl22sucgc9kc2p876sgzq2f4me89d2kxcf8ks In reply to <a href='/nevent1qqsg42puy6ve562cngcew97qv3cjyqd330qqkewfwvpeca94dy83x7qmy2999'>nevent1q…2999</a><br/>_________________________<br/><br/>That worked because it wasn&#39;t running any graphical interface. Just serial terminals. A current Linux kernel, even if you configured out absolutely everything not needed for that, probably wouldn&#39;t fit in 1 MiB, though I haven&#39;t tried. However, even stripped to a minimum configuration, a current Linux kernel provides a lot of features that BSD 4.2 did not. 2025-09-13T20:46:10Z https://njump.me/nevent1qqsg42puy6ve562cngcew97qv3cjyqd330qqkewfwvpeca94dy83x7qzyzzclnhe993q7n3pk7te45dl22sucgc9kc2p876sgzq2f4me89d2kghchrh In reply to <a href='/nevent1qqs23hrtafpqsspwrrn3v90pqp4zmesgah3wlh3p9q4lcad36x8yf0gd6qrhr'>nevent1q…qrhr</a><br/>_________________________<br/><br/>BSD 4.2 ran fairly well in 1 MiB on the VAX 11/780. 2025-09-13T20:28:51Z https://njump.me/nevent1qqszudwtycpklpkqtfsn0phy9q3cg88lftunsdnsd4663g967v64g2szyzzclnhe993q7n3pk7te45dl22sucgc9kc2p876sgzq2f4me89d2k95454v I was suspended from Twitter early in the pandemic for replying to someone else&#39;s tweet that gave misinformation about hydroxychloroquine as a COVID treatment. I wrote something like: &#34;Hydroxychloroquine is just as effective a COVID treatment as ivermectin. In other words, neither are effective at all.&#34; Even on appeal, Twitter refused to reinstate my account until I agreed to delete the tweet. 2025-09-13T20:25:21Z https://njump.me/nevent1qqs9z0cunczdqr5rm47wm3g3ftup70tpc942y96y9yqhvxypr8z53nczyzzclnhe993q7n3pk7te45dl22sucgc9kc2p876sgzq2f4me89d2k4nmwgv In reply to <a href='/nevent1qqstsxxewy9y7cyur06taryg7z9z7aagyx2z9ay7rd77hy03cuhwq8slyfgyk'>nevent1q…fgyk</a><br/>_________________________<br/><br/>That&#39;s why my hobby is #retrocomputing. Sure, the old computers from the 1960s and 1970s were thousands of times slower, and had a millionth as much memory, but they were, and still are, fun! 2025-09-13T03:52:19Z https://njump.me/nevent1qqs04sgs9mn3areuxmd6yvf5sl3gta3krtjhxdc4kssx4jcfhaeap5czyzzclnhe993q7n3pk7te45dl22sucgc9kc2p876sgzq2f4me89d2kjrjeu2 In reply to <a href='/nevent1qqsq9j60dtzz0n5rpmknwcka5yqk7c5whplr7w8xpw4hhvufssc88hgmg2wr6'>nevent1q…2wr6</a><br/>_________________________<br/><br/>And then deleted? I tried to reply to the edited post, but my reply failed,. 2025-09-11T04:52:23Z https://njump.me/nevent1qqsg8azvk5u8lsmkqndm5hddr52t3hsejvxscvuut3zq5tzh20dzyqszyzzclnhe993q7n3pk7te45dl22sucgc9kc2p876sgzq2f4me89d2ks3dzvp I don&#39;t have an SR-71, but I do have an SR-52 and an SR-56, both fully operational. 2025-09-02T20:23:04Z https://njump.me/nevent1qqs90hzz67fgu9qvud39tndgsp45qjszze3a75ns4q67phxvh53798czyzzclnhe993q7n3pk7te45dl22sucgc9kc2p876sgzq2f4me89d2kk6va90 In reply to <a href='/nevent1qqstxdpvl3rwsez98nnxfw49swyygf6c5dkxlzylvekpy2gny3gq74spxfg6x'>nevent1q…fg6x</a><br/>_________________________<br/><br/>Alchemy shouldn&#39;t do absolutely nothing. It should consume a bunch of something valuable, and produce a little of something useless. 2025-08-31T17:38:59Z https://njump.me/nevent1qqsdym60ucq657wp8qyfj3j9a86qrpaxerws9n8qte9z60pd9qd8yegzyzzclnhe993q7n3pk7te45dl22sucgc9kc2p876sgzq2f4me89d2kxstvng In reply to <a href='/nevent1qqsdhlj0h8z746dygnw2hftch24ksccuuuu83lnl2869ts9dm4z8p2ceqxs87'>nevent1q…xs87</a><br/>_________________________<br/><br/>Isn&#39;t the point of having some smaller ones like 0.1, 0.047, or 0.022 that the impedance vs frequency curve is better? Or do larger values like 4.7 in 0201 have impedance curves more like the 0.1 in 0603? 2025-08-22T19:00:03Z https://njump.me/nevent1qqs29agafgy56nf9urvup08ne8x88nlemv5u9xmtxr8lfyccwxjz86qzyzzclnhe993q7n3pk7te45dl22sucgc9kc2p876sgzq2f4me89d2kxrhqj5 In reply to <a href='/nevent1qqswfu2xxqszzeakdnhw6aycla9f6hfsufkdsdppf5qky5xe8p7xupsyga3jh'>nevent1q…a3jh</a><br/>_________________________<br/><br/>My computer doesn&#39;t have a halo, and probably should have horns and a forked tail. 2025-08-22T18:48:45Z https://njump.me/nevent1qqsvt6944d3p99jryc5x0dr94l2uf4hexevdqd3ezd0f0wfljun4k8qzyzzclnhe993q7n3pk7te45dl22sucgc9kc2p876sgzq2f4me89d2kgqxv7h I haven&#39;t lost my mind. I have it backed up on floppies somewhere. 2025-08-22T00:03:27Z https://njump.me/nevent1qqsfhtz9fd58unuq9wr6g2kjjhdcx2c8j8p028kkuw80x7cmev209lqzyzzclnhe993q7n3pk7te45dl22sucgc9kc2p876sgzq2f4me89d2kesj06f Breaking:<br/>Leapfrogging the competition&#39;s six-blade and seven-blade razor cartridges, Gillette announces the new FusionNano. Using the latest advances in both fusion energy and nanotechnology, the FusionNano incorporates over one billion cutting edges in each razor cartridge. Developed in cooperation with the Lawrence Livermore National Laboratory (LLNL), the nanotechnology blades of the FusionNano cartridge are forged by 500 terawatt (TW) laser pulses at the National Ignition Facility. 2025-08-18T20:10:32Z https://njump.me/nevent1qqsfwujvlus9r6sg6vhj7dh0wnpxxdkq0y9z8g0j3a9wg2kr5tswqeszyzzclnhe993q7n3pk7te45dl22sucgc9kc2p876sgzq2f4me89d2kxrwgs8 Fun Fact:<br/>Computers still scream while they&#39;re connected to the internet. Due to the high bandwidth, the frequency of the screams is now far above human hearing. 2025-08-16T22:13:33Z https://njump.me/nevent1qqs0z0xwhxpvtku6dmy6wuepft44glfur0razkhvxaf0uzlaush6z7gzyzzclnhe993q7n3pk7te45dl22sucgc9kc2p876sgzq2f4me89d2kk5az0c Once men turned their thinking over to machines in the hope that this would set them free. But that only permitted other men with machines to enslave them.<br/>— Frank Herbert, _Dune_ 2025-08-16T17:59:26Z https://njump.me/nevent1qqsqxc7d9yqtjteauaygcv6eqzn39kwc48sjt4yp3vz3lwt4fs6nwkszyzzclnhe993q7n3pk7te45dl22sucgc9kc2p876sgzq2f4me89d2k4usrlp My friend <span itemprop="mentions" itemscope itemtype="https://schema.org/Person"><a itemprop="url" href="/npub17pjxggjpemsslu72l3m22apga79xmzq5wwjrfmxlm7vvtdy5uv7qgqxm9e" class="bg-lavender dark:prose:text-neutral-50 dark:text-neutral-50 dark:bg-garnet px-1"><span>needlesscomplexity</span> (<span class="italic">npub17pj…xm9e</span>)</a></span> has posted two articles about RISC-V assembly language techniques to his substack:<br/><a href="https://needlesscomplexity.substack.com/p/efficient-risc-v-range-checking">https://needlesscomplexity.substack.com/p/efficient-risc-v-range-checking</a><br/><a href="https://needlesscomplexity.substack.com/p/efficient-sign-extension-on-risc">https://needlesscomplexity.substack.com/p/efficient-sign-extension-on-risc</a><br/>And a library of useful integer operations:<br/><a href="https://needlesscomplexity.substack.com/p/rvint-integer-mathematical-library">https://needlesscomplexity.substack.com/p/rvint-integer-mathematical-library</a><br/>I did a lot of assembly language programming back when dinosaurs still roamed the earth, and there are still some valid use cases even today. I firmly believe that having a grasp of assembly language also helps one write better HLL code.<br/>#riscv #assembly 2025-08-16T17:34:55Z https://njump.me/nevent1qqsdfqwrnqug8t04qtrjptwxkpld0vsunx3zp9prwdsmgveqpwnashgzyzzclnhe993q7n3pk7te45dl22sucgc9kc2p876sgzq2f4me89d2krfcfet I&#39;m writing a new simulator that won&#39;t run x86 software, so I&#39;m naming it DONTSBOX. 2025-08-12T03:19:57Z https://njump.me/nevent1qqsyj7wv5g0aupn976padfh3yn3mrgjzjz9q7jqrnjptvgwh0wyhdlqzyzzclnhe993q7n3pk7te45dl22sucgc9kc2p876sgzq2f4me89d2kqtffua In reply to <a href='/nevent1qqsgegm873vlj5wzspga4sfhd4ct96fkxmlzvf7qmxku4pnt4swsl4qunw5re'>nevent1q…w5re</a><br/>_________________________<br/><br/>My first Linux distribution was Yggdrasil. When that went away, I tried Debian, but back then the Debian install process was like playing 20 questions, except that it was a lot more questions, many of which totally stumped me, despite my having been a Unix user and programmer since 1984. (Clearly Debian fixed that at some later date.) Red Hat Linux was easy to install, which continued with Fedora. 2025-08-08T06:47:02Z https://njump.me/nevent1qqsgegm873vlj5wzspga4sfhd4ct96fkxmlzvf7qmxku4pnt4swsl4qzyzzclnhe993q7n3pk7te45dl22sucgc9kc2p876sgzq2f4me89d2kmkhhuq In reply to <a href='/nevent1qqs92zklullq7u0xagy90ugt0hvpf4uqz459ep5vjsfs5wrenkhucdcxn3yqu'>nevent1q…3yqu</a><br/>_________________________<br/><br/>I was worried when Red Hat announced that their non-enterprise distribution was going to become the community-driven Fedora, but it&#39;s worked out amazingly well.<br/>If I didn&#39;t use Fedora, I&#39;d probably use Debian. 2025-08-08T06:40:59Z https://njump.me/nevent1qqstpwld6pvmv4ghzeafnmj4wj7ds5vpfuauaspfwjufhy0fm5gza8czyzzclnhe993q7n3pk7te45dl22sucgc9kc2p876sgzq2f4me89d2kmjn0cy In reply to <a href='/nevent1qqsrpufc3xum86k0emnnz2en6jnst3jzexu7vkrwq3vgqhtscckmmksmu2cpa'>nevent1q…2cpa</a><br/>_________________________<br/><br/>There are many things that have occurred in my life, that I remember as if they were yesterday. Sadly, yesterday is no longer one of them. 2025-08-05T01:10:43Z https://njump.me/nevent1qqsfyk9v5pd8v8w7jx0v5uvk5rdrch58rzy7st6sft8wycwf22ql62czyzzclnhe993q7n3pk7te45dl22sucgc9kc2p876sgzq2f4me89d2kfrh5dx I Know What You Did Last Week<br/>#baldfacedlie 2025-08-05T01:09:07Z https://njump.me/nevent1qqst7ph7fcgstkey6r2ux2w57tzca2nlnsnjyxpx7yr5rr20j5a3jrszyzzclnhe993q7n3pk7te45dl22sucgc9kc2p876sgzq2f4me89d2kv5rfnv In reply to <a href='/nevent1qqsvwk4394t8q84jp6x7f83kxwrhwg4kwls0yzy3r97az4aecn9hahqeanw4e'>nevent1q…nw4e</a><br/>_________________________<br/><br/>Agreed, but modern programming languages, like C++ but also some others, have made that much more difficult to achieve in the general case. I haven&#39;t spent a great deal of time pondering it, but my gut feeling is that raising the semantic level of programming languages might inevitably have this effect.<br/>Certainly I find that debugging C++ code is on average substantially more difficult than debugging a similar amount of C code.<br/>1/ 2025-08-01T22:03:02Z https://njump.me/nevent1qqsym9fugxhc3meh3c8ezffq93xv76v32q3vqxe90uwnk4hnwg4dzdszyzzclnhe993q7n3pk7te45dl22sucgc9kc2p876sgzq2f4me89d2kk07w43 In reply to <a href='/nevent1qqsv9vvxm9dknuqrzuvs9s8lzp586ycq9gdxtw3zuvw6qraask3dyes6kvtwe'>nevent1q…vtwe</a><br/>_________________________<br/><br/>I should look into whether any of the open source static analysis tools would have detected this. Valgrind detects it at runtime, but I didn&#39;t understand what was causing the issue. Poking at it with gdb didn&#39;t help me much either, because I was looking in the wrong places.<br/>4/ 2025-08-01T21:07:37Z https://njump.me/nevent1qqsv9vvxm9dknuqrzuvs9s8lzp586ycq9gdxtw3zuvw6qraask3dyeszyzzclnhe993q7n3pk7te45dl22sucgc9kc2p876sgzq2f4me89d2kh8r7nv In reply to <a href='/nevent1qqsf94d7j7zyxsx4e45klm2gp97365pvmqn4xu7m5s47maldackwuusdwtwef'>nevent1q…twef</a><br/>_________________________<br/><br/>It&#39;s another case where C++ gave me enough rope to shoot myself in the foot.<br/>:-)<br/>3/ 2025-08-01T21:00:26Z https://njump.me/nevent1qqsf94d7j7zyxsx4e45klm2gp97365pvmqn4xu7m5s47maldackwuuszyzzclnhe993q7n3pk7te45dl22sucgc9kc2p876sgzq2f4me89d2kt0vxfk In reply to <a href='/nevent1qqsqkzdud9jcz4fkwha9nekgeyzs0mxnxd9f0qxkmrxq0qvt09szmng66evu6'>nevent1q…evu6</a><br/>_________________________<br/><br/>When the vector grows past its previous capacity, it has to be reallocated, which invalidates the iterator, but the loop is still trying to use it. In this case, I think changing the range-based for loop to an ordinary for loop with a numeric index will solve the problem.<br/>2/ 2025-08-01T20:59:39Z https://njump.me/nevent1qqsqkzdud9jcz4fkwha9nekgeyzs0mxnxd9f0qxkmrxq0qvt09szmngzyzzclnhe993q7n3pk7te45dl22sucgc9kc2p876sgzq2f4me89d2k9uq9ja I&#39;ve been trying to track down a nasty memory corruption problem in my C++ program, which manifests right after I do an emplace_back() to a std::vector. My debugging efforts this far have mostly focused on the constructors involved in creating the element for the vector, but I haven&#39;t found anything wrong there.<br/>I&#39;m away from my computer right now, but I think I may have identified the problem. That emplace_back() occurs in a range-based for loop that is iterating over the vector.<br/>1/ 2025-08-01T20:45:29Z https://njump.me/nevent1qqs2c8sycv7grw42lge9raqglm9avzh3947jx5n09cpwl7jzrth8a0qzyzzclnhe993q7n3pk7te45dl22sucgc9kc2p876sgzq2f4me89d2kmmshtz I really like depositing checks by phone. I can hardly wait until they roll out the new feature to deposit cash by phone 2025-07-29T19:42:13Z https://njump.me/nevent1qqst73phtjda5ccvdhdsr8mtkjyj77r3yac4qpg7r67jl4rn26hajrszyzzclnhe993q7n3pk7te45dl22sucgc9kc2p876sgzq2f4me89d2kmvfnu0 In reply to <a href='/nevent1qqs0wcc3an9xx7qzem2zlg646hm034s885ml9cypqctnc46kx424fhc0vm7tf'>nevent1q…m7tf</a><br/>_________________________<br/><br/>It appears that the 65C816 ABORT was intended to support virtual memory, but didn&#39;t quite get there.<br/>One can imagine adding external hardware that tracks the memory addresses and data written by an instruction, and drives RDY false and undoes the writes if an ABORT occurs. It&#39;s highly doubtful that anyone ever built such a thing.<br/>AFAIK, no one even built a 65C816 system with a &#34;real&#34; MMU. Maybe one could interface an MC68451 segmented MMU? 2025-07-27T19:44:10Z https://njump.me/nevent1qqs8ay5gckt3vjke454axe7jf9wkvc2hzmmqp46nphadn4w4y32dewczyzzclnhe993q7n3pk7te45dl22sucgc9kc2p876sgzq2f4me89d2kfdmq8a In reply to <a href='/nevent1qqsqlgtvef204a4c77rwgywze8lhfxhxq84u7wjlhjyx36fnt28evtqwcrk90'>nevent1q…rk90</a><br/>_________________________<br/><br/>This is one reason why it would be difficult, if not impossible, to implement virtual memory in a fully general way on the 65C816.<br/>4/ 2025-07-27T19:22:46Z https://njump.me/nevent1qqsqlgtvef204a4c77rwgywze8lhfxhxq84u7wjlhjyx36fnt28evtqzyzzclnhe993q7n3pk7te45dl22sucgc9kc2p876sgzq2f4me89d2kk8xe4h In reply to <a href='/nevent1qqspzh3ny34k8w3u296f0u8qrlr6g22x6u3tgekkad9w2vd7nz09cdcnvp05d'>nevent1q…p05d</a><br/>_________________________<br/><br/>The WDC dataset only says that processor registers are unchanged if the instruction is aborted, and does not claim that nemory is unchanged. In table 5-7 &#34;Instruction Operation&#34;, there are multiple references to note 3, giving exception cases where the registers actually are modified, even on ABORT.<br/>3/ 2025-07-27T19:21:10Z https://njump.me/nevent1qqspzh3ny34k8w3u296f0u8qrlr6g22x6u3tgekkad9w2vd7nz09cdczyzzclnhe993q7n3pk7te45dl22sucgc9kc2p876sgzq2f4me89d2kq5w6rm In reply to <a href='/nevent1qqs9sevmxerucdmwzvgmzg4c7rxgzuxtps9ytp2we3mng34wtc5gjkqshlq9u'>nevent1q…lq9u</a><br/>_________________________<br/><br/>For instance, suppose that, in 16-bit data mode, you execute an INC of memory. For a 16-bit read/modify/write instruction, the 65C816 reads the low byte of the operand, reads the high byte, does the increment internally, writes the high byte of the result, then writes the low byte.<br/>If an ABORT occurs when the 65C816 tries to write the low byte, the high byte in memory has already been changed.<br/>2/ 2025-07-27T19:17:24Z https://njump.me/nevent1qqs9sevmxerucdmwzvgmzg4c7rxgzuxtps9ytp2we3mng34wtc5gjkqzyzzclnhe993q7n3pk7te45dl22sucgc9kc2p876sgzq2f4me89d2kz6vez6 I just noticed that there&#39;s something wrong on the internet!<br/>Several web pages about the Western Design Center 65C816 microprocessor, including a Wikipedia article, claim that if an ABORT occurs during an instruction, no changes occur to either registers or memory. The latter is incorrect. If an abort occurs after the instruction has already changed memory, the 65C816 does not undo the change.<br/>1/ 2025-07-27T19:11:41Z https://njump.me/nevent1qqsp7snte97rpyg2skqw923pnvn593r62fglx7ysham95an5afgmdjqzyzzclnhe993q7n3pk7te45dl22sucgc9kc2p876sgzq2f4me89d2kj807d8 Sound output has mysteriously stopped working on my desktop Linux system (running Fedora 42). 2025-07-27T02:31:21Z https://njump.me/nevent1qqsddvd5h7dfx02qpy3r2ztze3rt0azvfger454rla0dk5quc5qhewgzyzzclnhe993q7n3pk7te45dl22sucgc9kc2p876sgzq2f4me89d2ksgwmcn In reply to <a href='/nevent1qqsqagqtxepuf5m8d4mvy8n5w5ukn2dwfv3f2mxhce0h0k24y8ny6gs4wwevp'>nevent1q…wevp</a><br/>_________________________<br/><br/>For NMOS, I&#39;m using the Rockwell R6502 family datasheet. At some point in the past, I carefully compared the table data to a MOS Technology datasheet.<br/>For the 65C02 and 65C816, I&#39;m using the WDC datasheets. 2025-07-20T08:14:04Z https://njump.me/nevent1qqs25fswngw9urgzqztcy9h69xr5tt9azzff60u3ww8lh82yjfhtr2gzyzzclnhe993q7n3pk7te45dl22sucgc9kc2p876sgzq2f4me89d2k60f9f2 In reply to <a href='/nevent1qqsdq3puf8hyneu8x6mnc0jgwf2dhatecjv5qc73rh5qqk2235avhpgqdv3y5'>nevent1q…v3y5</a><br/>_________________________<br/><br/>I&#39;ve now added instruction- and cycle-counting to Ibex, for both 6502 (NMOS) and 65C02, though I think I&#39;m counting one cycle off for read-modify-write instructions in the absolute indexed by X addressing mode on the 65C02. On the NMOS part, these always take the same number of cycles, but on CMOS, they take one less cycle unless there is a page crossing.<br/>12/ 2025-07-20T07:39:21Z https://njump.me/nevent1qqsv7kemwt32tdzjhhjxxucxkmjsplf7h4hjc7yxt3d76rj0y2dtxdszyzzclnhe993q7n3pk7te45dl22sucgc9kc2p876sgzq2f4me89d2kaurn54 In reply to <a href='/nevent1qqsd6vtp87fwfsqq3ug4slr4m07nk3zk59spuqh2mv5k8n9hv6mkr5s7uf09l'>nevent1q…f09l</a><br/>_________________________<br/><br/>The hate is that they&#39;re often used for way too much, or _everything_, e.g. what Firefox does by default except on MacOS. There&#39;s no reason Firefox on a desktop OS needs a hamburger menu at all, since normal menus work fine in the environment. Hamburger menus should be provided for little-used commands on platforms with where display space is at too much of a premium for use of a menu bar. 2025-07-20T00:28:27Z https://njump.me/nevent1qqsdq3puf8hyneu8x6mnc0jgwf2dhatecjv5qc73rh5qqk2235avhpgzyzzclnhe993q7n3pk7te45dl22sucgc9kc2p876sgzq2f4me89d2kenhang In reply to <a href='/nevent1qqsx0pa5vf7e8dhpwp5wp8sdqt6zegkxxzhgnjd6efaedl8z6l5x3gcr5ru28'>nevent1q…ru28</a><br/>_________________________<br/><br/>Making a simulator pass all BCD tests is a huge hassle. On the 6502, the resulting N, V, and Z flag values are unspecified, though deterministic. The results with invalid operands are unspecified, though deterministic, but differ between the 6502, 65C02, and 65C816.<br/>If not for Bruce Clark publishing his analysis and test code, I probably wouldn&#39;t have bothered.<br/>11/ 2025-07-19T07:20:19Z https://njump.me/nevent1qqsx0pa5vf7e8dhpwp5wp8sdqt6zegkxxzhgnjd6efaedl8z6l5x3gczyzzclnhe993q7n3pk7te45dl22sucgc9kc2p876sgzq2f4me89d2kzkr7pg In reply to <a href='/nevent1qqs8tknm0c36snjeajvlmuh87j87pduaaygazpw2l5ew6vy3tkcnmcgwlkwau'>nevent1q…kwau</a><br/>_________________________<br/><br/>The ibex 6502 &amp; (subset) Apex simulator has now been updated to support the 65C02, including the Rockwell bit instructions that weren&#39;t in all vendors&#39; 65C02 parts, but not the WDC STP and WAI instructions. The default is still NMOS 6502, but CMOS can be selected with the &#34;-c&#34; command line option.<br/>It now passes the Klaus Dormann 6502 functional test, 65C02 extended instruction test, and the Bruce Clark BCD arithmetic tests for (both valid and invalid BCD operands, on both 6502 and 65C02).<br/>10/ 2025-07-19T07:17:32Z https://njump.me/nevent1qqs8tknm0c36snjeajvlmuh87j87pduaaygazpw2l5ew6vy3tkcnmcgzyzzclnhe993q7n3pk7te45dl22sucgc9kc2p876sgzq2f4me89d2k789ypa In reply to <a href='/nevent1qqsff4zzmjwevtgesv93pppcuq9j55c9akvr4002774x0alxydczaes599g5q'>nevent1q…9g5q</a><br/>_________________________<br/><br/>My new probably-uaeful-to-no-one 6502 simulator is ibex:<br/><a href="https://github.com/brouhaha/ibex">https://github.com/brouhaha/ibex</a><br/>It is intended for running executables for the Apex operating system.<br/>9/ 2025-07-15T22:09:40Z https://njump.me/nevent1qqswjtzrd0k8k3dw7g25tuqnmq3lnkvnqn89sh09mzadjdkcdt09wyczyzzclnhe993q7n3pk7te45dl22sucgc9kc2p876sgzq2f4me89d2kps6wrw degenerative AI 2025-07-14T03:55:55Z https://njump.me/nevent1qqs2xrxrgcsean84crsduagvfhctsvlfxrqlpmdmxpmqxnf92lxz2tczyzzclnhe993q7n3pk7te45dl22sucgc9kc2p876sgzq2f4me89d2knqv0p4 In reply to <a href='/nevent1qqsff4zzmjwevtgesv93pppcuq9j55c9akvr4002774x0alxydczaes599g5q'>nevent1q…9g5q</a><br/>_________________________<br/><br/>I computed the flags wrong for the BIT instruction. I think I made that same mistake when I last wrote 6502 emulation code, 30-some years ago.<br/>Easier to find this time, thanks to<br/><a href="https://github.com/Klaus2m5/6502_65C02_functional_tests">https://github.com/Klaus2m5/6502_65C02_functional_tests</a> 2025-07-14T01:50:38Z https://njump.me/nevent1qqsff4zzmjwevtgesv93pppcuq9j55c9akvr4002774x0alxydczaeszyzzclnhe993q7n3pk7te45dl22sucgc9kc2p876sgzq2f4me89d2kk2ev6u In reply to <a href='/nevent1qqszr0uenv6v9plamrs7a84fy0cracz65kyhhsfujrpt9jdtervzxrs339l7f'>nevent1q…9l7f</a><br/>_________________________<br/><br/>And if I wrote a new 6502 cross-assembler that the world doesn&#39;t need, then I ought to write a new 6502 simulator that the world also doesn&#39;t need. Right?<br/>Debugging it now. As usual, flags are wrong somewhere.<br/>8/ 2025-07-13T07:44:04Z https://njump.me/nevent1qqszr0uenv6v9plamrs7a84fy0cracz65kyhhsfujrpt9jdtervzxrszyzzclnhe993q7n3pk7te45dl22sucgc9kc2p876sgzq2f4me89d2k9prpu9 In reply to <a href='/nevent1qqszzrel6qu5p6q2ht8rky0chza5svkdyv4x60qgu5t2wjy4m9xgk4qz6ygea'>nevent1q…ygea</a><br/>_________________________<br/><br/>My new 6502 cross assembler (for PAL65 syntax) is impala:<br/><a href="https://github.com/brouhaha/impala">https://github.com/brouhaha/impala</a><br/>7/ 2025-07-12T07:02:24Z https://njump.me/nevent1qqszzrel6qu5p6q2ht8rky0chza5svkdyv4x60qgu5t2wjy4m9xgk4qzyzzclnhe993q7n3pk7te45dl22sucgc9kc2p876sgzq2f4me89d2k46vpq0 In reply to <a href='/nevent1qqsyt5mux5yc5v3rjum4dh553sdh8k6fh9j8tne8s94ljpudgz6mppcqz08d2'>nevent1q…08d2</a><br/>_________________________<br/><br/>As far as I know, their is no surviving copy of the actual PAL65 cross-assembler, which ran on the DECsystem-10, though the asm65 native assembler was by design compatible with it.<br/>6/ 2025-07-10T22:04:16Z https://njump.me/nevent1qqsyt5mux5yc5v3rjum4dh553sdh8k6fh9j8tne8s94ljpudgz6mppczyzzclnhe993q7n3pk7te45dl22sucgc9kc2p876sgzq2f4me89d2k2w8ezm In reply to <a href='/nevent1qqsqmhuucall7fda22f6n0gs2rqkj6p5aszh27y3g8rjjjs5tafsdfsh7rj27'>nevent1q…rj27</a><br/>_________________________<br/><br/>The bigger question is, what assembler&#39;s set of psedo-ops should the PAL65 psedo-ops be translated into? Pseudo-ops for 6502 assemblers seem to have a great deal of variation.<br/>For example, to declare bytes of constant data, PAL65 uses<br/> .byte $3a<br/>while some other assemblers use that, or the same without the dot, or<br/> fcb $3a<br/><br/>The two cross-assmrblers I&#39;m initially inclined to support would be ca65 (part of the cc65 compiler suite), and Macro Assembler AS.<br/>5/ 2025-07-10T22:02:14Z https://njump.me/nevent1qqsqmhuucall7fda22f6n0gs2rqkj6p5aszh27y3g8rjjjs5tafsdfszyzzclnhe993q7n3pk7te45dl22sucgc9kc2p876sgzq2f4me89d2kmqt97q In reply to <a href='/nevent1qqsfedzg5frva8uq3vjaqg7p420k9y2lwgdugvqff0nswgj5pe8tg6qu6849h'>nevent1q…849h</a><br/>_________________________<br/><br/>In last night&#39;s 6502 Group meeting, Wayne Wall, primary original author of ASM65, FOCAL, and other 6502 Group software, mentioned the idea of writing a PAL65-to-MOS-Technology syntax conversion utility. And I thought, gee, I&#39;ve just been writing a cross assembler using a PEG parser. I could almost trivially build such a utility. But since it was already an assembler, it was easiest to first turn it into a PAL65-compatible cross-assembler.<br/>Adding a mode to output MOS syntax will be trivial.<br/>4/ 2025-07-10T21:58:18Z https://njump.me/nevent1qqsfedzg5frva8uq3vjaqg7p420k9y2lwgdugvqff0nswgj5pe8tg6qzyzzclnhe993q7n3pk7te45dl22sucgc9kc2p876sgzq2f4me89d2k97xz6d In reply to <a href='/nevent1qqs825q40mscppetz2qug29vjrv7hmy0syaqz4a0zkg6x4d24u03jlstwtegh'>nevent1q…tegh</a><br/>_________________________<br/><br/>This was easier to parse, and could be implemented as macros in another assembler (assuming that # and @ characters are allowed in macro names).<br/><br/>PAL65 syntax was also used by the ASM65 assembler, most commonly on the APEX operating system. However, none of this ever gained much traction beyond members of the 6502 Group.<br/>3/ 2025-07-10T21:54:26Z https://njump.me/nevent1qqs825q40mscppetz2qug29vjrv7hmy0syaqz4a0zkg6x4d24u03jlszyzzclnhe993q7n3pk7te45dl22sucgc9kc2p876sgzq2f4me89d2kl5u3ax In reply to <a href='/nevent1qqsxwqxu9y226sa67qvryrh8tz4hc4c0598r7txelxg33se05xupjyqg3fhtj'>nevent1q…fhtj</a><br/>_________________________<br/><br/>Examples:<br/>LDA #$3A -&gt; LDA# $3A<br/>ORA FOO,X -&gt; ORAX FOO<br/>STA (BAR),Y -&gt; STA@Y BAR<br/>JMP (VECTOR) -&gt; JMP@ VECTOR<br/><br/>2/ 2025-07-10T21:51:41Z https://njump.me/nevent1qqsxwqxu9y226sa67qvryrh8tz4hc4c0598r7txelxg33se05xupjyqzyzzclnhe993q7n3pk7te45dl22sucgc9kc2p876sgzq2f4me89d2k4nek3l I&#39;ve written yet another 6502 cross-assembler, named impala, based on my work-in-progress IBM System/360 cross-assembler.<br/>The world probably doesn&#39;t in general need more 6502 cross-assemblers, but impala uses the PAL65 assembler syntax of the 6502 Group, instead of normal MOS Technology 6502 assembler syntax.<br/>In PAL65 syntax, instead of addressing modes using prefixes and suffixes on the operand,but uses suffixes on the instruction mnemonic.<br/>1/ 2025-07-10T21:50:27Z https://njump.me/nevent1qqszlvtsq2l2wjvvly4hxeq05f7cedgv6jjv32p9ng8lca9e3qneyhqzyzzclnhe993q7n3pk7te45dl22sucgc9kc2p876sgzq2f4me89d2k8al9ss We may be witnessing the end of history, because in the future, it will become impossible to distinguish &#34;real&#34; records from AI slop. 2025-07-06T21:12:16Z https://njump.me/nevent1qqs0k2rckxcp9203t97pmddczk288h5dcst0cyj49lrjmw8t2qa4qmczyzzclnhe993q7n3pk7te45dl22sucgc9kc2p876sgzq2f4me89d2k0fmhgp In reply to <a href='/nevent1qqsgyrpr2fkfvejp2n5jxpljhydd7yj9xgh0rmdr3sxc2jsdvml47yszen7wk'>nevent1q…n7wk</a><br/>_________________________<br/><br/>That&#39;s because Wayland etc. are new and improved.<br/>:-(<br/>The Wayland etc. developers set out to replace X, correcting perceived (and, to be fair, real) shortcomings, without preserving some important use cases of X. While they made the Wayland architecture fundamentally more efficient at some things, they made it difficult if not impossible to do some traditional X stuff efficiently. 2025-06-29T20:49:06Z