2026-10-20T04:44:21Z https://njump.me DJ🌞:donor: https://njump.me/npub1cwd0s3usl5g9tte8sxnk5u7cvzg9lsg6az8wwky82w925x77y79qzn4d06 https://media.infosec.exchange/infosec.exchange/accounts/avatars/109/358/909/573/466/415/original/e7a8b3cf214cf53f.png https://media.infosec.exchange/infosec.exchange/accounts/avatars/109/358/909/573/466/415/original/e7a8b3cf214cf53f.png https://njump.me/nevent1qqsx7exuuhg7ulcn38pdg9fgj4vq6rn0tu7tyuw30rut0ld5yw5d5mczyrpe47z8jr73q4d0y7q6w6nnmpsfqh7prt5gae6csafc42smmcnc5jn4guy Hello! Is Friday, so is time for #NakedDieFriday whether you want it or not.<br/><br/>I was asked several times, whether one can see an IC failure under a microscope. Well, I am sure that today you won&#39;t be able to miss it.<br/><br/>Here is the sample in situ. Can you spot the problem?<br/><br/>#electronics #reverseengineering<br/> <img src="https://media.infosec.exchange/infosec.exchange/media_attachments/files/117/055/496/007/959/884/original/86d5daf8c8f08465.jpg"> <br/> 2026-08-07T17:53:23Z https://njump.me/nevent1qqsdn6wdxxfgg9rjka3m8rm585d4etpyw84x5syavyeqwn8y3ywz4jqzyrpe47z8jr73q4d0y7q6w6nnmpsfqh7prt5gae6csafc42smmcnc5smcuum In reply to <a href='/nevent1qqs2weapxy8kwsppl38ee3zawunprf04kpwt7mqy26ehqlvuytxzhxsznwyj3'>nevent1q…wyj3</a><br/>_________________________<br/><br/>There is a block of standard cells at the top left. It looks like it&#39;s missing something as well.<br/><br/>On another note, two routing channels are missing dummy fill and instead have something else. Mysterious!<br/> <img src="https://media.infosec.exchange/infosec.exchange/media_attachments/files/116/935/904/424/440/195/original/dbd617282aa4ceac.png"> <br/> 2026-07-17T14:59:09Z https://njump.me/nevent1qqs2weapxy8kwsppl38ee3zawunprf04kpwt7mqy26ehqlvuytxzhxszyrpe47z8jr73q4d0y7q6w6nnmpsfqh7prt5gae6csafc42smmcnc5q87vay In reply to <a href='/nevent1qqsqm3vexupsdsuapz8rn00qgxrq236mnurxff53pselc7zqskqaucqpd5rtz'>nevent1q…5rtz</a><br/>_________________________<br/><br/>And a 12-bit RAM block, for some reason?<br/> <img src="https://media.infosec.exchange/infosec.exchange/media_attachments/files/116/935/891/413/289/908/original/382f3c800363d1ba.png"> <br/> 2026-07-17T14:55:18Z https://njump.me/nevent1qqsqm3vexupsdsuapz8rn00qgxrq236mnurxff53pselc7zqskqaucqzyrpe47z8jr73q4d0y7q6w6nnmpsfqh7prt5gae6csafc42smmcnc5yn7h0m In reply to <a href='/nevent1qqsgac8l730cw3vf90hz7v7q537casps2fflnwt08d2zyd2ppmglwccze523c'>nevent1q…523c</a><br/>_________________________<br/><br/>And what do we have here, this reeks of a 8-bit CPU design. From the top: microcode PLA, control, data path. I wonder if this is something standard like a 8051?<br/> <img src="https://media.infosec.exchange/infosec.exchange/media_attachments/files/116/935/859/493/301/513/original/1ef41b761a170d6a.png"> <br/> 2026-07-17T14:49:13Z https://njump.me/nevent1qqsgac8l730cw3vf90hz7v7q537casps2fflnwt08d2zyd2ppmglwcczyrpe47z8jr73q4d0y7q6w6nnmpsfqh7prt5gae6csafc42smmcnc5wwawe5 In reply to <a href='/nevent1qqs2l097a3gs6lvvw4l7wck3nl3y53ctxrmphe2tsc6sc5yl8vywlnqgx7qrj'>nevent1q…7qrj</a><br/>_________________________<br/><br/>Returning upstairs, it seems this is the 8/16-bit machine, like 8 data and 16 address bits. All the SRAM blocks seem to have 8-bit I/O if you look *really* close.<br/> <img src="https://media.infosec.exchange/infosec.exchange/media_attachments/files/116/935/854/232/169/761/original/0903710465d841b4.png"> <br/> 2026-07-17T14:46:02Z https://njump.me/nevent1qqs2l097a3gs6lvvw4l7wck3nl3y53ctxrmphe2tsc6sc5yl8vywlnqzyrpe47z8jr73q4d0y7q6w6nnmpsfqh7prt5gae6csafc42smmcnc5qcwudu In reply to <a href='/nevent1qqsgfenlapkhljynfdwfujm3xy8jtkqhvkdtejy3gka49accg6qardg9ntxl9'>nevent1q…txl9</a><br/>_________________________<br/><br/>This could be the &#34;normal&#34; ALU for the DSP, judging by the many 16-way sub-units in there, plus a 16-bit bus running on the right.<br/> <img src="https://media.infosec.exchange/infosec.exchange/media_attachments/files/116/935/839/512/722/851/original/3d0a70b8d1aff06c.png"> <br/> 2026-07-17T14:42:59Z https://njump.me/nevent1qqsgfenlapkhljynfdwfujm3xy8jtkqhvkdtejy3gka49accg6qardgzyrpe47z8jr73q4d0y7q6w6nnmpsfqh7prt5gae6csafc42smmcnc5q9y5r0 In reply to <a href='/nevent1qqszs0cnpmqg3f5gzvp36g8th5r04hwfjneg7a5sqg9dn6axl024w4swdes5j'>nevent1q…es5j</a><br/>_________________________<br/><br/>A 16-bit shift or swizzle unit? Seems it can also do bit-reverse, which is useful for DSP code.<br/> <img src="https://media.infosec.exchange/infosec.exchange/media_attachments/files/116/935/806/419/425/291/original/4280ece5f67b55e7.png"> <br/> 2026-07-17T14:36:03Z https://njump.me/nevent1qqszs0cnpmqg3f5gzvp36g8th5r04hwfjneg7a5sqg9dn6axl024w4szyrpe47z8jr73q4d0y7q6w6nnmpsfqh7prt5gae6csafc42smmcnc5ehcd90 In reply to <a href='/nevent1qqswcfns0cx7x3w6eqqp80sm5hm085chea7hmll7rfpr52qn0yvrrxckn4dz2'>nevent1q…4dz2</a><br/>_________________________<br/><br/>A lot of funky stuff is at the bottom there, like this interesting unit. Apart from it being 16 bits wide, I can&#39;t figure much about what it does -- my best guess is multiplication. What do you think?<br/> <img src="https://media.infosec.exchange/infosec.exchange/media_attachments/files/116/935/784/296/145/032/original/1aae3502ad40025b.png"> <br/> 2026-07-17T14:32:41Z https://njump.me/nevent1qqswcfns0cx7x3w6eqqp80sm5hm085chea7hmll7rfpr52qn0yvrrxczyrpe47z8jr73q4d0y7q6w6nnmpsfqh7prt5gae6csafc42smmcnc5r3r050 In reply to <a href='/nevent1qqsde3gc4uc4pr8d7fxz9hjleg84w6kvs23an9xrqpccsrfju8uztwgfz2v4u'>nevent1q…2v4u</a><br/>_________________________<br/><br/>This could be explained due to width: ROMs in the bottom half seem to be 32 bits wide, which is... interesting? Could the bottom half be a DSP?<br/> <img src="https://media.infosec.exchange/infosec.exchange/media_attachments/files/116/935/760/201/915/968/original/74c2aa54eab8ce14.png"> <br/> 2026-07-17T14:24:33Z https://njump.me/nevent1qqsde3gc4uc4pr8d7fxz9hjleg84w6kvs23an9xrqpccsrfju8uztwgzyrpe47z8jr73q4d0y7q6w6nnmpsfqh7prt5gae6csafc42smmcnc5ug2q3h In reply to <a href='/nevent1qqsyuspvdep68ewqh3hnqta9qg4rjcvh48m2hq57p7talvvuk3zg00sh4vmnp'>nevent1q…vmnp</a><br/>_________________________<br/><br/>Same goes for ROMs, on the example of siamesed blocks here, top vs bottom.<br/> <img src="https://media.infosec.exchange/infosec.exchange/media_attachments/files/116/935/749/292/828/036/original/68b394377b3a4ff4.png"> <br/> <img src="https://media.infosec.exchange/infosec.exchange/media_attachments/files/116/935/751/292/224/426/original/6e2f5690a2bcf48b.png"> <br/> 2026-07-17T14:19:57Z https://njump.me/nevent1qqsyuspvdep68ewqh3hnqta9qg4rjcvh48m2hq57p7talvvuk3zg00szyrpe47z8jr73q4d0y7q6w6nnmpsfqh7prt5gae6csafc42smmcnc5e8vh00 In reply to <a href='/nevent1qqsdx87jsh98dex7cad9fhfprxa367czdm845wc8vfr5jjmymemrwhg60n3lr'>nevent1q…n3lr</a><br/>_________________________<br/><br/>On the topic of memory blocks, it seems there are two distinct IP sets on this die. The top half differs significantly from the bottom half. For example, here is what I believe to be SRAM, top vs bottom.<br/> <img src="https://media.infosec.exchange/infosec.exchange/media_attachments/files/116/935/734/387/013/749/original/fb41ac21f0bf2653.png"> <br/> <img src="https://media.infosec.exchange/infosec.exchange/media_attachments/files/116/935/739/144/328/127/original/fc95d8c46a403ec3.png"> <br/> 2026-07-17T14:18:17Z https://njump.me/nevent1qqsdx87jsh98dex7cad9fhfprxa367czdm845wc8vfr5jjmymemrwhgzyrpe47z8jr73q4d0y7q6w6nnmpsfqh7prt5gae6csafc42smmcnc57rq6g4 In reply to <a href='/nevent1qqsfy5h2c9w9lz3cgfgrf3n75qa25dhafy58r5zr0ym979kpakev36s44jzzn'>nevent1q…jzzn</a><br/>_________________________<br/><br/>The most prominent feature, however, is... empty space at the right.<br/><br/>There used to be *something* in there -- there is a bus routed to the empty space. I wonder what it was? More memory with extra features?<br/> <img src="https://media.infosec.exchange/infosec.exchange/media_attachments/files/116/935/696/377/777/635/original/2f8ac4a69f40fe1d.png"> <br/> 2026-07-17T14:06:23Z https://njump.me/nevent1qqsfy5h2c9w9lz3cgfgrf3n75qa25dhafy58r5zr0ym979kpakev36szyrpe47z8jr73q4d0y7q6w6nnmpsfqh7prt5gae6csafc42smmcnc55rshly In reply to <a href='/nevent1qqsdpxv7ecq0m8hdufqf6xwap2npk4933jymjuka4k6h3jy777mardsxfj9hh'>nevent1q…j9hh</a><br/>_________________________<br/><br/>Mask ID corner! Funny how this is P8085-A.<br/> <img src="https://media.infosec.exchange/infosec.exchange/media_attachments/files/116/935/660/731/545/383/original/fb846282393e9b9e.png"> <br/> 2026-07-17T13:57:20Z https://njump.me/nevent1qqsdpxv7ecq0m8hdufqf6xwap2npk4933jymjuka4k6h3jy777mardszyrpe47z8jr73q4d0y7q6w6nnmpsfqh7prt5gae6csafc42smmcnc50y9g5w In reply to <a href='/nevent1qqsw68sfrgs35xrs67hqc3y2swf3063mv4ujg0yfnuuc8936sye6aasn77062'>nevent1q…7062</a><br/>_________________________<br/><br/>We do have a logo, and it is Conexant proper -- not Rockwell.<br/> <img src="https://media.infosec.exchange/infosec.exchange/media_attachments/files/116/935/657/066/049/433/original/7ba473e76e94c171.png"> <br/> 2026-07-17T13:55:43Z https://njump.me/nevent1qqsw68sfrgs35xrs67hqc3y2swf3063mv4ujg0yfnuuc8936sye6aaszyrpe47z8jr73q4d0y7q6w6nnmpsfqh7prt5gae6csafc42smmcnc5mdwewp Hello, how are you doing? This is #NakedDieFriday speaking, and today&#39;s post is the continuation of the one from last week. It is the second die out of Conexant FM336PLUS, a modem chip. Unfortunately, there was some trash on the die which I could not remove.<br/><br/>The die is larger than the other one and appears to be fully digital. There are a lot of memory blocks as well. Let&#39;s have a more detailed look.<br/><br/>Full-res map: <a href="http://infosecdj.net/map/conexant/fm336plus-b/infosecdj_mz_nikpa40x_66p/">http://infosecdj.net/map/conexant/fm336plus-b/infosecdj_mz_nikpa40x_66p/</a><br/><br/>#electronics #reverseengineering #microscopy<br/> <img src="https://media.infosec.exchange/infosec.exchange/media_attachments/files/116/935/647/515/039/023/original/ec94685d459863f9.jpg"> <br/> 2026-07-17T13:54:53Z https://njump.me/nevent1qqs22g58nhu5xh4qv9dq5f5jypzk3e0spf0ma5x7y39rhnztktqahcqzyrpe47z8jr73q4d0y7q6w6nnmpsfqh7prt5gae6csafc42smmcnc5atvc9p In reply to <a href='/nevent1qqsrcp77znd6483ru73ljtvk0hjzvmpd0vrwyuju0wxutrsjduxcwlcts2g9a'>nevent1q…2g9a</a><br/>_________________________<br/><br/>There are circuits which looks more analogue than the rest of it. Could be a built-in RC timing generator, or a Vbb generator. Two large capacitors certainly stand out here.<br/> <img src="https://media.infosec.exchange/infosec.exchange/media_attachments/files/116/738/788/757/372/980/original/1db234f7ea3ec03e.png"> <br/> 2026-06-12T19:30:27Z https://njump.me/nevent1qqsrcp77znd6483ru73ljtvk0hjzvmpd0vrwyuju0wxutrsjduxcwlczyrpe47z8jr73q4d0y7q6w6nnmpsfqh7prt5gae6csafc42smmcnc5ctpfhy In reply to <a href='/nevent1qqsw43cjz88ehgjck95nt9cj42cxfylppmxgt5fzqf0082jde69428gl6hf7w'>nevent1q…hf7w</a><br/>_________________________<br/><br/>This is probably the earliest chip I&#39;ve seen which includes fuses.<br/> <img src="https://media.infosec.exchange/infosec.exchange/media_attachments/files/116/738/765/053/596/014/original/6c11788fa9376438.png"> <br/> 2026-06-12T19:23:34Z https://njump.me/nevent1qqsw43cjz88ehgjck95nt9cj42cxfylppmxgt5fzqf0082jde69428gzyrpe47z8jr73q4d0y7q6w6nnmpsfqh7prt5gae6csafc42smmcnc5930gl9 In reply to <a href='/nevent1qqstdx2la0t3fjuzgwjvk8tg43c7vdqqqdknrl2p02wtz4l7wgfh6tgsuuph2'>nevent1q…uph2</a><br/>_________________________<br/><br/>While word/bitlines can easily be seen under a 40x, individual bit storage transistors are a bit on the small side. Can only guess where they are.<br/> <img src="https://media.infosec.exchange/infosec.exchange/media_attachments/files/116/738/755/741/051/065/original/73f63a14007e6c3d.png"> <br/> 2026-06-12T19:21:55Z https://njump.me/nevent1qqstdx2la0t3fjuzgwjvk8tg43c7vdqqqdknrl2p02wtz4l7wgfh6tgzyrpe47z8jr73q4d0y7q6w6nnmpsfqh7prt5gae6csafc42smmcnc5s76kh4 Good evening! This is #NakedDieFriday speaking.<br/><br/>Today I got one DRAM chip, named GM71C4100CJ70 by LG Semi / GoldStar apparently. It is a 4Mx1 part.<br/><br/>Many thanks to <span itemprop="mentions" itemscope itemtype="https://schema.org/Person"><a itemprop="url" href="/npub162rpcgkq5fd9l4f0s6hyze28nljx6829ymjaffkv6ac9qjc6ncgqf7ewqz" class="bg-lavender dark:prose:text-neutral-50 dark:text-neutral-50 dark:bg-garnet px-1"><span>root42</span> (<span class="italic">npub162r…ewqz</span>)</a></span> for supplying this sample! His account and yt channel is dedicated to retro hardware -- make sure to check it out if that&#39;s your cup of tea!<br/><br/>Full-res map: <a href="http://infosecdj.net/map/lg-semi/gm71c4100cj60/infosecdj_mz_nikpa40x/">http://infosecdj.net/map/lg-semi/gm71c4100cj60/infosecdj_mz_nikpa40x/</a><br/><br/>#electronics #retrocomputing<br/> <img src="https://media.infosec.exchange/infosec.exchange/media_attachments/files/116/738/734/804/393/927/original/162426368dd83246.jpg"> <br/> 2026-06-12T19:18:56Z https://njump.me/nevent1qqstz0xlgcfak9admktaxhw7tjwcmw6cmz95px33gvlu9hf3lzsxgeszyrpe47z8jr73q4d0y7q6w6nnmpsfqh7prt5gae6csafc42smmcnc58nzcr2 In reply to <a href='/nevent1qqsgcff6qlvr2a60ny6yh3kklzk4lne8kqrwqz0pkzt4vrcxmn55snsjpwtqt'>nevent1q…wtqt</a><br/>_________________________<br/><br/>What&#39;s that about? 2026-05-09T12:15:05Z https://njump.me/nevent1qqsy85stxvrgdyhn4u4v6aglz3xhwqjhrryzus9qz38hms8vl0lpzhgzyrpe47z8jr73q4d0y7q6w6nnmpsfqh7prt5gae6csafc42smmcnc5f4mcrk As I will be travelling starting tomorrow, I declare the #nakeddiefriday today.<br/><br/>Instead of going deeper into one particular die, this will be several of them but one-pagers.<br/><br/>This one is HV9911 by Supertex (now owned by Microchip). Those following me have probably seen the epic struggle with restoring a diving light; this one came from the LED driver chip in the light. Entirely undamaged, as far as I can tell. Of particular interest is an array of fuses in the top right corner.<br/><br/>#electronics #reverseengineering #icre<br/> <img src="https://media.infosec.exchange/infosec.exchange/media_attachments/files/115/900/757/968/674/239/original/b26c21796110fe55.jpg"> <br/> 2026-01-15T19:29:05Z https://njump.me/nevent1qqs03l9pq9cfe4k09sa9m33tajqkehcdvyn43xl3l98u8ep983w7lnczyrpe47z8jr73q4d0y7q6w6nnmpsfqh7prt5gae6csafc42smmcnc5hnc4su In reply to <a href='/nevent1qqsd30vz5pysaqkhwwrhfasgwdhstalvnxuefcd57x89vq89uuwe7ss67j2hp'>nevent1q…j2hp</a><br/>_________________________<br/><br/>pretty sure you can find examples of how to do that, as a lot of media sites produce &#34;previews&#34; in a similar way. should be easy to throw together. 2026-01-12T12:28:36Z https://njump.me/nevent1qqsydqm8q4xgc4lyh5fmda7c90quh56wktszqcc3ns23cnlyzehwsnczyrpe47z8jr73q4d0y7q6w6nnmpsfqh7prt5gae6csafc42smmcnc55c03ps In reply to <a href='/nevent1qqsvpw7l3n9nmg96kxrxrz0jh0e5g2twrzgaruga3peejhqckfj6dschr7atg'>nevent1q…7atg</a><br/>_________________________<br/><br/>it should work unless the service does live media encoding. easy to test against too, just download twice. :)<br/><br/>as for your other concern, not much you can do about it without examining the received media in detail. to save time, you could produce a small still image every hour, for example; much easier to inspect daily instead of watching everything, but still requires a human in the loop. 2026-01-12T12:25:20Z https://njump.me/nevent1qqsqmyvyt7mssdgujg2w6t3phv5mqzj5jefkzeef9ylwelyqpch0lkqzyrpe47z8jr73q4d0y7q6w6nnmpsfqh7prt5gae6csafc42smmcnc5tkpqdm In reply to <a href='/nevent1qqsdfpf2p9alfmlj3kckk46rdn5rlvqenhyq7ty5qswz5y49pg678kgy0mh9v'>nevent1q…mh9v</a><br/>_________________________<br/><br/>fetch twice and compare two copies in your storage? if you are only concerned about corruption on its way to you or the process of saving it on the disk, of course. 2026-01-12T12:12:33Z https://njump.me/nevent1qqsrkledhcgn47t0kustxnvke8jgpu30tj7s00539fhegs0snwg5rkczyrpe47z8jr73q4d0y7q6w6nnmpsfqh7prt5gae6csafc42smmcnc520pa4u Can anyone recognize this IC? Looking for its p/n and a datasheet ideally. Handles all the analog audio paths in a portable cassette player.<br/><br/>#electronics #reverseengineering<br/> <img src="https://media.infosec.exchange/infosec.exchange/media_attachments/files/115/836/634/144/852/730/original/fa50706171dcbcfa.png"> <br/> 2026-01-04T11:41:15Z https://njump.me/nevent1qqs8sg2v3geuqse3t9rv6yngx364ux92wt5zv26ur59cx273yyx3l3czyrpe47z8jr73q4d0y7q6w6nnmpsfqh7prt5gae6csafc42smmcnc5jk9ge6 Hello! This is #nakeddiefriday and it&#39;s the last one this year! What better way to end it than putting out something classic. And today I got just that: the 6502 by MOS! There is really no need to write more on what this chip was and what impact it had. Enjoy scrolling around the full-resolution image!<br/><br/>I would like to thank <span itemprop="mentions" itemscope itemtype="https://schema.org/Person"><a itemprop="url" href="/npub162rpcgkq5fd9l4f0s6hyze28nljx6829ymjaffkv6ac9qjc6ncgqf7ewqz" class="bg-lavender dark:prose:text-neutral-50 dark:text-neutral-50 dark:bg-garnet px-1"><span>root42</span> (<span class="italic">npub162r…ewqz</span>)</a></span> for supplying this particular sample!<br/><br/>SiPron page: <a href="https://siliconpr0n.org/archive/doku.php?id=infosecdj:mos:6502b">https://siliconpr0n.org/archive/doku.php?id=infosecdj:mos:6502b</a><br/>Full-res map: <a href="https://siliconpr0n.org/map/mos/6502b/infosecdj_mz_nikpa40x/">https://siliconpr0n.org/map/mos/6502b/infosecdj_mz_nikpa40x/</a><br/><br/>I wish you all merry holidays and hope to see you next year for more high-quality die shots.<br/> <img src="https://media.infosec.exchange/infosec.exchange/media_attachments/files/115/785/769/840/947/670/original/ef0a75ef2fd7122e.jpg"> <br/> 2025-12-26T12:09:08Z https://njump.me/nevent1qqspwz6qsukmkwyja02ca2tfvyzf6zfr7tu7f9f2h0nz5wd49lntycczyrpe47z8jr73q4d0y7q6w6nnmpsfqh7prt5gae6csafc42smmcnc5xkxc48 New post on my blog! Decapping with DMSO.<br/><br/><a href="https://dev-zzo.github.io/blarg/2025/12/19/decapping-dmso.html">https://dev-zzo.github.io/blarg/2025/12/19/decapping-dmso.html</a><br/><br/>#electronics #reverseengineering 2025-12-20T09:48:57Z https://njump.me/nevent1qqsghtafmrg8s00wvjdm6faunuyp55vck98kc2llryu4jdrz9tvmmyqzyrpe47z8jr73q4d0y7q6w6nnmpsfqh7prt5gae6csafc42smmcnc5ul75ft Moin moin, this is #nakeddiefriday speaking! Only two remain until the end of 2025!<br/><br/>Today&#39;s image is of one Soviet design, К161ПР2 fabbed at Ukrainian PO Oktyabr, date code showing 1989. This decodes the 8421 code (aka BCD) to drive a segment display. It is made in metal-gate pMOS, and is powered with -27V! None of that 5V rubbish.<br/><br/>#electronics #reverseengineering #microscopy<br/> <img src="https://media.infosec.exchange/infosec.exchange/media_attachments/files/115/745/576/203/650/713/original/14a92a6819e3b594.jpg"> <br/> <img src="https://media.infosec.exchange/infosec.exchange/media_attachments/files/115/745/597/431/493/360/original/323b47234939bc55.jpg"> <br/> 2025-12-19T09:48:33Z https://njump.me/nevent1qqswf9z87qrsn6kstdk96kfrsyhcvf5v2mms2mk54hnqq0vjj4mm93czyrpe47z8jr73q4d0y7q6w6nnmpsfqh7prt5gae6csafc42smmcnc5k53an7 Hello! Hello. It&#39;s #nakeddiefriday today, and I wanted to show you one of the older works. This is an automotive ASIC fabbed for Toyota, part number DF028. I do not know the function of this particular device.<br/><br/>SiPron page: <a href="https://siliconprawn.org/archive/doku.php?id=infosecdj:toyota:d028f">https://siliconprawn.org/archive/doku.php?id=infosecdj:toyota:d028f</a><br/><br/>#electronics #reverseengineering #microscopy #automotive<br/> <img src="https://media.infosec.exchange/infosec.exchange/media_attachments/files/115/468/173/805/919/602/original/25d3ee3ec5223efa.jpg"> <br/> 2025-10-31T09:56:24Z https://njump.me/nevent1qqst0rlajzda5zdm7v403ha09crlg6re49tezvpl8qsay7km0a6n3rszyrpe47z8jr73q4d0y7q6w6nnmpsfqh7prt5gae6csafc42smmcnc5srhk8y Hi there! This is #nakeddiefriday again!<br/><br/>Today I&#39;d like to present you one of frequent sources of pain for C64 owners, the infamous PLA. This is MOS 7700R2. They failed way too often, and considering this is custom silicon, the only option was to get another one of the same.<br/><br/>Many thanks to <span itemprop="mentions" itemscope itemtype="https://schema.org/Person"><a itemprop="url" href="/npub162rpcgkq5fd9l4f0s6hyze28nljx6829ymjaffkv6ac9qjc6ncgqf7ewqz" class="bg-lavender dark:prose:text-neutral-50 dark:text-neutral-50 dark:bg-garnet px-1"><span>root42</span> (<span class="italic">npub162r…ewqz</span>)</a></span> for providing this sample!<br/><br/>SiPron link: <a href="https://siliconprawn.org/archive/doku.php?id=infosecdj:mos:7700r2">https://siliconprawn.org/archive/doku.php?id=infosecdj:mos:7700r2</a><br/><br/>#electronics #reverseengineering #retrocomputing<br/> <img src="https://media.infosec.exchange/infosec.exchange/media_attachments/files/115/388/293/994/558/760/original/227ab5404ec8cf79.jpg"> <br/> <img src="https://media.infosec.exchange/infosec.exchange/media_attachments/files/115/388/294/294/875/625/original/c16623605ca45e36.jpg"> <br/> 2025-10-17T07:26:10Z https://njump.me/nevent1qqsphrv8kv90ug33c6wzwfmzvjr9ruf86735mz4q2zqhzfnzr25svwgzyrpe47z8jr73q4d0y7q6w6nnmpsfqh7prt5gae6csafc42smmcnc50r7p7z Pre-flight checks complete, taking off.<br/><br/>#FotoMontag<br/> <img src="https://media.infosec.exchange/infosec.exchange/media_attachments/files/115/365/459/141/974/343/original/efc56b00d1f23d50.png"> <br/> 2025-10-13T06:34:15Z https://njump.me/nevent1qqsd68hxhqum0y0sxww4xjyuwy423fjlsa3v7gn2cchqy650xzcn7kqzyrpe47z8jr73q4d0y7q6w6nnmpsfqh7prt5gae6csafc42smmcnc5tqpurq Happy #nakeddiefriday to everyone! Let&#39;s get this ball rolling.<br/><br/>Today we have a real classic, the MC6845 by Motorola. This is a CRT controller chip used in quite a few video adapters back in the day.<br/><br/>Thanks to <span itemprop="mentions" itemscope itemtype="https://schema.org/Person"><a itemprop="url" href="/npub1dhl6470pzgczhuy6yxgpf595l998vppl0jje2swukmwyk7qny6dq0qud8y" class="bg-lavender dark:prose:text-neutral-50 dark:text-neutral-50 dark:bg-garnet px-1"><span>gloriouscow</span> (<span class="italic">npub1dhl…ud8y</span>)</a></span> for suggesting this one! We&#39;ll do a short thread looking around.<br/><br/>SiPron page: <a href="https://siliconprawn.org/archive/doku.php?id=infosecdj:motorola:mc6845p-jr5">https://siliconprawn.org/archive/doku.php?id=infosecdj:motorola:mc6845p-jr5</a><br/><br/>#electronics #retrocomputing #reverseengineering #icre<br/> <img src="https://media.infosec.exchange/infosec.exchange/media_attachments/files/115/349/388/293/306/199/original/0d801205d1decd33.jpg"> <br/> 2025-10-10T10:26:37Z https://njump.me/nevent1qqs8sa5sf4zmrequtu2u9enurkjsknhhv0cz7j8cu42c0qmv2mk39rgzyrpe47z8jr73q4d0y7q6w6nnmpsfqh7prt5gae6csafc42smmcnc5206569 And hey, since the weather is absolutely abysmal today, I will treat you to another die shot as an extension of #nakeddiefriday.<br/><br/>This is КР1810ВМ86, an otherwise identical clone of Intel 8086 made by Soviets at an unknown plant.<br/><br/>The 8086 was extensively reverse-engineered by <span itemprop="mentions" itemscope itemtype="https://schema.org/Person"><a itemprop="url" href="/npub1mgq5f2207ye4p2q55ge5qytuc4qsj6zw7cu79k735yq04c5as9wqqysjel" class="bg-lavender dark:prose:text-neutral-50 dark:text-neutral-50 dark:bg-garnet px-1"><span>Ken Shirriff</span> (<span class="italic">npub1mgq…sjel</span>)</a></span> -- give his blog a read!<br/><br/>SiPron page: <a href="https://siliconprawn.org/archive/doku.php?id=infosecdj:unknown:kr1810vm86">https://siliconprawn.org/archive/doku.php?id=infosecdj:unknown:kr1810vm86</a><br/><br/>#electronics #reverseengineering #icre<br/> <img src="https://media.infosec.exchange/infosec.exchange/media_attachments/files/115/315/541/334/985/979/original/0d9b9250f673f9c9.jpg"> <br/> 2025-10-04T11:00:47Z https://njump.me/nevent1qqspzfcfferwq90964jd8ng60ltcmcqpxgghmknglp26m40rqjsycjszyrpe47z8jr73q4d0y7q6w6nnmpsfqh7prt5gae6csafc42smmcnc559jyf4 Hey all, sorry it has been a while for the #nakeddiefriday due to health reasons, but here we come again!<br/><br/>Today&#39;s guest of honor is one made by intel, the 80286! This is an NMOS sample, but CMOS versions exist too (I got no samples yet). One metal layer only! I also deprocessed the sample to fully expose polysilicon and diffusion layers. Let&#39;s have a look?<br/><br/>Many thanks to <span itemprop="mentions" itemscope itemtype="https://schema.org/Person"><a itemprop="url" href="/npub1dhl6470pzgczhuy6yxgpf595l998vppl0jje2swukmwyk7qny6dq0qud8y" class="bg-lavender dark:prose:text-neutral-50 dark:text-neutral-50 dark:bg-garnet px-1"><span>gloriouscow</span> (<span class="italic">npub1dhl…ud8y</span>)</a></span> for supporting this work!<br/><br/>SiPron page: <a href="https://siliconprawn.org/archive/doku.php?id=infosecdj:intel:80286-10">https://siliconprawn.org/archive/doku.php?id=infosecdj:intel:80286-10</a><br/><br/>#electronics #reverseengineering #retrocomputing<br/> <img src="https://media.infosec.exchange/infosec.exchange/media_attachments/files/115/230/246/442/484/162/original/e403da8243200ff4.jpg"> <br/> <img src="https://media.infosec.exchange/infosec.exchange/media_attachments/files/115/230/274/428/379/571/original/a5f786b131d13751.jpg"> <br/> 2025-09-19T09:35:44Z https://njump.me/nevent1qqsq5jq7mp35eex5vq99w5c49mdkqt2wv6qsv3zvgvvgt4cavjd7luczyrpe47z8jr73q4d0y7q6w6nnmpsfqh7prt5gae6csafc42smmcnc5scr0rt my guardian angel be like<br/> <img src="https://media.infosec.exchange/infosec.exchange/media_attachments/files/115/044/642/953/776/182/original/b557b7d933d366c3.jpeg"> <br/> 2025-08-17T14:46:19Z https://njump.me/nevent1qqsfmfzhwpr973kz98nwgh4dcrgndnpuvmp7jnqw80c8ggh54dsln2gzyrpe47z8jr73q4d0y7q6w6nnmpsfqh7prt5gae6csafc42smmcnc5stjmal Yo all, it is Friday now where I am, so might as well get the #nakeddiefriday thing going.<br/><br/>Today&#39;s guest is the famous NES PPU chip, RP2C07A by Ricoh. What&#39;s interesting about this particular sample is that it&#39;s very very dead. Many thanks to <span itemprop="mentions" itemscope itemtype="https://schema.org/Person"><a itemprop="url" href="/npub162rpcgkq5fd9l4f0s6hyze28nljx6829ymjaffkv6ac9qjc6ncgqf7ewqz" class="bg-lavender dark:prose:text-neutral-50 dark:text-neutral-50 dark:bg-garnet px-1"><span>root42</span> (<span class="italic">npub162r…ewqz</span>)</a></span> for supplying it!<br/><br/>As always, a short thread follows. Why not give this one a boost while you&#39;re here? :D<br/><br/>SiPron page for those hi-res maps we all love: <a href="https://siliconpr0n.org/archive/doku.php?id=infosecdj:ricoh:rp2c07a">https://siliconpr0n.org/archive/doku.php?id=infosecdj:ricoh:rp2c07a</a><br/><br/>Note the die is oriented the same way Visual 2C02 has it: <a href="https://www.nesdev.org/wiki/Visual_2C02">https://www.nesdev.org/wiki/Visual_2C02</a><br/><br/>#electronics #reverseengineering #icre #failureanalysis<br/> <img src="https://media.infosec.exchange/infosec.exchange/media_attachments/files/115/029/667/331/015/185/original/9f8f9bc4f3548762.jpg"> <br/> 2025-08-14T23:18:15Z https://njump.me/nevent1qqs0hfullerq9f0dkm6dvm53vsfpq4u572938yt3z6xvayqvrz7780czyrpe47z8jr73q4d0y7q6w6nnmpsfqh7prt5gae6csafc42smmcnc5thav5z Hello and welcome to this installment of #nakeddiefriday! Today&#39;s guest of honour is one КР556РТ4, a Soviet clone of 82S126 the 256x4 TTL PROM.<br/><br/>A very short thread.<br/><br/>SiPron page: <a href="https://siliconpr0n.org/archive/doku.php?id=infosecdj:gamma:kr556rt4">https://siliconpr0n.org/archive/doku.php?id=infosecdj:gamma:kr556rt4</a><br/><br/>#electronics #reverseengineering #icre<br/> <img src="https://media.infosec.exchange/infosec.exchange/media_attachments/files/114/992/968/549/535/609/original/2afb77eadc1256fc.jpg"> <br/> 2025-08-08T11:45:08Z https://njump.me/nevent1qqspjrupmcpzsvwdx9lyuntxndetg0ppwv5v3m683y38eyejmu5t6ggzyrpe47z8jr73q4d0y7q6w6nnmpsfqh7prt5gae6csafc42smmcnc5kemg0h About time we get this #nakeddiefriday going, friends.<br/><br/>Today&#39;s exhibit is one ST1305B, by ST Micro. This is a memory card IC with 192 bits of memory on the die.<br/><br/>The die itself is only 1.40×1.18 mm, quite on the small side.<br/><br/>SiPron page: <a href="https://siliconpr0n.org/archive/doku.php?id=infosecdj:st:st1305b">https://siliconpr0n.org/archive/doku.php?id=infosecdj:st:st1305b</a><br/><br/>#electronics #reverseengineering #microscopy<br/> <img src="https://media.infosec.exchange/infosec.exchange/media_attachments/files/114/477/815/667/856/800/original/90aa24b29ed32880.jpg"> <br/> 2025-05-09T12:15:39Z https://njump.me/nevent1qqs20kcsq0gplld072saey4pxrrn9nq02wssx8kw4zy9gcn378cugsczyrpe47z8jr73q4d0y7q6w6nnmpsfqh7prt5gae6csafc42smmcnc526prly Let&#39;s get this #nakeddiefriday started, people!<br/><br/>The guest of today is one TMS70C42A by TI. It is a 8-bit MCU carrying 4KB of ROM and 256B of RAM, with three timers and a UART.<br/><br/>This particular die was bit by gremlins, and a small part of it is missing; nothing crucial though. Let&#39;s have a walk around. 🧵 <br/><br/>SiPron page: <a href="https://siliconpr0n.org/archive/doku.php?id=infosecdj:ti:tms70c42a">https://siliconpr0n.org/archive/doku.php?id=infosecdj:ti:tms70c42a</a><br/><br/>#electronics #reverseengineering #microscopy<br/> <img src="https://media.infosec.exchange/infosec.exchange/media_attachments/files/114/398/464/747/986/636/original/175a3022bc28f60a.jpg"> <br/> 2025-04-25T12:00:11Z https://njump.me/nevent1qqsycvlpwk8c64l7v7ru4xy30tk3vy9enwms05a7vqleusrracek88szyrpe47z8jr73q4d0y7q6w6nnmpsfqh7prt5gae6csafc42smmcnc56fmyet In reply to <a href='/nevent1qqs8rlhvj3wscmwv3wwggs9m6q5r0pa8q4py6rek7de5m703mvsf7eqvnhqtj'>nevent1q…hqtj</a><br/>_________________________<br/><br/>Probably the highlight of all the varieties, meet its holiness the god-tier inductor.<br/><br/>I would really love to hear the rationale behind (hehe) this design.<br/> <img src="https://media.infosec.exchange/infosec.exchange/media_attachments/files/114/279/840/007/861/162/original/dbcf96c70248356a.png"> <br/> 2025-04-04T13:07:03Z https://njump.me/nevent1qqs8rlhvj3wscmwv3wwggs9m6q5r0pa8q4py6rek7de5m703mvsf7eqzyrpe47z8jr73q4d0y7q6w6nnmpsfqh7prt5gae6csafc42smmcnc5fh65s4 In reply to <a href='/nevent1qqst272a7mts295sd0009afme7y0pl5phjc96hqwpzvr3zs2jpw6cwg9rxe75'>nevent1q…xe75</a><br/>_________________________<br/><br/>This is interesting. They wired up two pairs, and attempted to length match one of them, but not the other? I wonder why. There also seem to be &#34;guard traces&#34; around the two pairs, something I haven&#39;t encountered before on IC artwork.<br/> <img src="https://media.infosec.exchange/infosec.exchange/media_attachments/files/114/279/817/600/072/376/original/384ab3cfbf96ff6b.png"> <br/> 2025-04-04T13:01:45Z https://njump.me/nevent1qqst272a7mts295sd0009afme7y0pl5phjc96hqwpzvr3zs2jpw6cwgzyrpe47z8jr73q4d0y7q6w6nnmpsfqh7prt5gae6csafc42smmcnc5l96qn3 In reply to <a href='/nevent1qqsdqcacdzp6kyx5p3h7shuhzk43j4xtd0w4fjm6ya6q8xyrauc8ees5087ts'>nevent1q…87ts</a><br/>_________________________<br/><br/>And once again, we have a large variety of components formed in the RF section. A pleasure to look at, really. One can see that some are manufactured on multiple metal layers, I can count at least four here.<br/> <img src="https://media.infosec.exchange/infosec.exchange/media_attachments/files/114/279/804/364/497/067/original/bf60c53e97dd6438.png"> <br/> 2025-04-04T12:58:11Z https://njump.me/nevent1qqsdqcacdzp6kyx5p3h7shuhzk43j4xtd0w4fjm6ya6q8xyrauc8eeszyrpe47z8jr73q4d0y7q6w6nnmpsfqh7prt5gae6csafc42smmcnc5g70lj6 In reply to <a href='/nevent1qqs0n990caexdyje997nvc43x5jl9r7m86g34cmp5xap9r6xgtgl4wq6nug77'>nevent1q…ug77</a><br/>_________________________<br/><br/>Interesting to compare the die show against the pinout map from the datasheet. Only 32 pins are brought out, however quite a few more seem to be bonded out. 65, if I counted right. Granted, some just break power pins out, but not at two times the amount?<br/><br/>If anyone knows where the rest goes, do let us all know. I don&#39;t think there were any other dies in the package.<br/> <img src="https://media.infosec.exchange/infosec.exchange/media_attachments/files/114/279/745/488/703/314/original/d443125a17446430.png"> <br/> 2025-04-04T12:49:33Z https://njump.me/nevent1qqs0n990caexdyje997nvc43x5jl9r7m86g34cmp5xap9r6xgtgl4wqzyrpe47z8jr73q4d0y7q6w6nnmpsfqh7prt5gae6csafc42smmcnc5dmheme Welcome to the new edition of #nakeddiefriday everyone. The guest today is the famous ESP8266EX by Espressif, a SoC loved by many in the electronics world.<br/><br/>Unfortunately, the digital section is fully covered by two topmost metal layers carrying power. We do have a glorious analog/RF section though.<br/><br/>SiPron page: <a href="https://siliconpr0n.org/archive/doku.php?id=infosecdj:espressif:esp8266ex">https://siliconpr0n.org/archive/doku.php?id=infosecdj:espressif:esp8266ex</a><br/><br/>#electronics #reverseengineering #microscopy<br/> <img src="https://media.infosec.exchange/infosec.exchange/media_attachments/files/114/279/710/839/974/667/original/21645be4637b8eda.jpg"> <br/> 2025-04-04T12:40:24Z https://njump.me/nevent1qqsrtl2j4mqnpwa9kglnfle3520juvqfwraxjhxh8qgwe03nqxwmrkczyrpe47z8jr73q4d0y7q6w6nnmpsfqh7prt5gae6csafc42smmcnc5s5n2g9 In reply to <a href='/nevent1qqsyeujdvlnqwdg83ueektfey98azgp9wg8avpvkxenzny6ljenvs6gmk08lc'>nevent1q…08lc</a><br/>_________________________<br/><br/>or maybe it&#39;s not exclusively your VM any more ;) ;) 2025-03-29T09:02:20Z https://njump.me/nevent1qqsrvz3ay8k6qyla9td82ce3rjy95ynthcuex05yvmfnerm8904aa9szyrpe47z8jr73q4d0y7q6w6nnmpsfqh7prt5gae6csafc42smmcnc5f29930 Alright, let&#39;s get the #nakeddiefriday going.<br/><br/>Today&#39;s exhibit is AR9281 by Atheros, a very classic Wi-Fi chip found in many devices. Comes in very pink hues.<br/><br/>SiPron page: <a href="https://siliconpr0n.org/archive/doku.php?id=infosecdj:atheros:ar9281-al1e">https://siliconpr0n.org/archive/doku.php?id=infosecdj:atheros:ar9281-al1e</a><br/><br/>#electronics #reverseengineering #microscopy<br/> <img src="https://media.infosec.exchange/infosec.exchange/media_attachments/files/114/239/654/897/319/834/original/5cb7b93695049366.jpg"> <br/> 2025-03-28T10:54:44Z https://njump.me/nevent1qqs2suq8k3fktec2qkx7xme2zwc26ry0xejsdckaa2c8ss4sjwduykszyrpe47z8jr73q4d0y7q6w6nnmpsfqh7prt5gae6csafc42smmcnc5xhgame In reply to <a href='/nevent1qqsv38q3d5uax7x733c97gj9d2h00kpwjc8tjuxyykwrl3n9mlpdd5srszm4n'>nevent1q…zm4n</a><br/>_________________________<br/><br/>Hey Brian. Just wanted to let you know that I am a cis white man in IT, and I feel horror, disgust and revulsion as described above despite all that. Then again, I am not a US resident, that might be the key difference. 2025-03-24T20:30:09Z https://njump.me/nevent1qqst3jedzjqnledk4fsege0xnrc6ey8zc5lyd3jsq8n8786dfrmmq6qzyrpe47z8jr73q4d0y7q6w6nnmpsfqh7prt5gae6csafc42smmcnc5pjjd2p In reply to <a href='/nevent1qqs2qr2zr23jtfse7687t39vf9ffmqtx0s8drlhzprc97lhf9gycjkgrlnyv9'>nevent1q…nyv9</a><br/>_________________________<br/><br/>great. will there be any action taken against the perpetrators? otherwise all this is blah blah and waste of oxygen. 2025-03-24T20:19:48Z https://njump.me/nevent1qqs28ee5cxslr50jxplnaw0fxzwlygd53kjzmssrea6gf2s3yyehpzqzyrpe47z8jr73q4d0y7q6w6nnmpsfqh7prt5gae6csafc42smmcnc58pk0zn Hello and welcome to this week&#39;s installment of #nakeddiefriday !<br/><br/>The guest of today is the TIBPAL16R4 by TI, a programmable array logic chip made with bipolar logic. The die has 2 metal layers, its maskwork produced in 1985. A short thread follows.<br/><br/>More info and hi-res pano at: <a href="https://siliconpr0n.org/archive/doku.php?id=infosecdj:ti:tibpal16r4">https://siliconpr0n.org/archive/doku.php?id=infosecdj:ti:tibpal16r4</a><br/><br/>#electronics #reverseengineering #miroscopy #icreverseengineering<br/> <img src="https://media.infosec.exchange/infosec.exchange/media_attachments/files/114/199/991/059/783/475/original/90682d604bfff4c7.jpg"> <br/> 2025-03-21T10:44:41Z https://njump.me/nevent1qqsyds7h98ezfntjfvlyjcgdjr0ete667p2wkn0welayqu28req48wqzyrpe47z8jr73q4d0y7q6w6nnmpsfqh7prt5gae6csafc42smmcnc50w708j In reply to <a href='/nevent1qqs05p560jde8sv0llsqdue7ffhhkq05zjykejuzj0rumpg39urke2cv3fm6f'>nevent1q…fm6f</a><br/>_________________________<br/><br/>do we take it that paid plans do *not* include this &#34;feature&#34; then? 2025-03-17T22:34:22Z https://njump.me/nevent1qqswmkghk4pyjgnthv035cr0ee4ln3rllqe97h0tgruv8g60hmzqm6gzyrpe47z8jr73q4d0y7q6w6nnmpsfqh7prt5gae6csafc42smmcnc5ra2g28 In reply to <a href='/nevent1qqsdg6e66gqcuaee9z889gr77slda0h5hflm35q2lc927cajlv03nmcqy4clm'>nevent1q…4clm</a><br/>_________________________<br/><br/>The other two units are 4 blocks each but of different construction. I am not quite sure why the difference; could be because the IRAM is dual-port and the XRAM isn&#39;t. Can&#39;t definitely say which one is which though.<br/><br/>Bonus SRAM tapestry for you all:<br/> <img src="https://media.infosec.exchange/infosec.exchange/media_attachments/files/114/162/532/179/065/379/original/32eac4a03bfeb500.png"> <br/> 2025-03-14T19:55:55Z https://njump.me/nevent1qqsdg6e66gqcuaee9z889gr77slda0h5hflm35q2lc927cajlv03nmczyrpe47z8jr73q4d0y7q6w6nnmpsfqh7prt5gae6csafc42smmcnc5key89w In reply to <a href='/nevent1qqspk7hw38y9ezcdf8sv0pjfj5auzghh0lk2adgacp55h0vgnwfx6ugvd9zzd'>nevent1q…9zzd</a><br/>_________________________<br/><br/>There seems to be three distinct memory arrays on the die, located left, top, and right. The datasheet mentions that the max spec configuration is 2KB IRAM, 2KB XRAM, and 128K mask ROM. I strongly suspect they just use the same die for all of them.<br/><br/>The mask ROM is easy to spot, it is the largest one and consists of 8 blocks. Block structure is rather peculiar with sawtooth-like patterns all across. So far I&#39;ve only seen Siemens/Infineon employ this particular design; if anyone has any further info please leave a comment as I&#39;d love to learn more about it.<br/> <img src="https://media.infosec.exchange/infosec.exchange/media_attachments/files/114/162/513/522/254/296/original/365d570b164c23d4.png"> <br/> 2025-03-14T19:50:29Z https://njump.me/nevent1qqspk7hw38y9ezcdf8sv0pjfj5auzghh0lk2adgacp55h0vgnwfx6ugzyrpe47z8jr73q4d0y7q6w6nnmpsfqh7prt5gae6csafc42smmcnc5p2sdfc In reply to <a href='/nevent1qqspmrt4tg6l2n4cfjzvacnnpcn6vlqqdfvtl5jug8nqhxxa67yyhsq6ld76x'>nevent1q…d76x</a><br/>_________________________<br/><br/>The bottom left corner hosts the ADC unit. These are easy to spot as there&#39;s typically way more analog action going on than in any other unit.<br/> <img src="https://media.infosec.exchange/infosec.exchange/media_attachments/files/114/162/475/428/634/248/original/6a40903ba2c82c30.jpg"> <br/> 2025-03-14T19:39:58Z https://njump.me/nevent1qqspmrt4tg6l2n4cfjzvacnnpcn6vlqqdfvtl5jug8nqhxxa67yyhsqzyrpe47z8jr73q4d0y7q6w6nnmpsfqh7prt5gae6csafc42smmcnc5pdhg4x In reply to <a href='/nevent1qqs8wdtx3vcae7a3e5rczles060vwpn3qnd3395f7ajn6x555x59nrg6amzzj'>nevent1q…mzzj</a><br/>_________________________<br/><br/>The middle of the die is taken up by a variety of units. Some of them have amazing regularity, hinting at parallel processing of data. Almost universally it is done 16-ways, which checks out with the internal data bus width being 16 bits. It is hard to pinpoint which ones does what exactly.<br/> <img src="https://media.infosec.exchange/infosec.exchange/media_attachments/files/114/162/457/759/432/887/original/20005f4b048534ab.png"> <br/> 2025-03-14T19:36:17Z https://njump.me/nevent1qqs8wdtx3vcae7a3e5rczles060vwpn3qnd3395f7ajn6x555x59nrgzyrpe47z8jr73q4d0y7q6w6nnmpsfqh7prt5gae6csafc42smmcnc5agy23d In reply to <a href='/nevent1qqs8ry2xjhvyhz4jrt9p4g2qskvge8trh0pz92c4gjchvyvuu2cgrkcqgqvwy'>nevent1q…qvwy</a><br/>_________________________<br/><br/>At the top center is a very distinct unit, with two PLAs and some logic. I feel that&#39;s not quite enough to make up a full 16-bit CPU, and the amount of lines wired into it is on the smaller side. Could be the CAN unit? We&#39;ve seen a similar implementation from Philips last time, also sporting two PLAs.<br/><br/>There is also a mirrored Bosch logo and copyright.<br/> <img src="https://media.infosec.exchange/infosec.exchange/media_attachments/files/114/162/408/460/008/129/original/4f75544a3581511f.jpg"> <br/> 2025-03-14T19:28:09Z https://njump.me/nevent1qqs8ry2xjhvyhz4jrt9p4g2qskvge8trh0pz92c4gjchvyvuu2cgrkczyrpe47z8jr73q4d0y7q6w6nnmpsfqh7prt5gae6csafc42smmcnc58lkzkf Hey hey, you thought there be no #nakeddiefriday today? Here we go!<br/><br/>Today&#39;s entry is an Infineon/Siemens SAB-C167CR-LM, a microcontroller based on the C166 core. The die is in pleasant-looking pastel colours. :-) The die has pin 1 in top left corner. I&#39;ll do a short thread.<br/><br/>Many thanks to <span itemprop="mentions" itemscope itemtype="https://schema.org/Person"><a itemprop="url" href="/npub1xtrtu9rwcc370dygt53vhc4um0twyu0xxvk0p2962kwwhpnm2cuq7rsdtm" class="bg-lavender dark:prose:text-neutral-50 dark:text-neutral-50 dark:bg-garnet px-1"><span>debauer</span> (<span class="italic">npub1xtr…sdtm</span>)</a></span> for supplying the samples!<br/><br/>SiPron page with more info and full-res map: <a href="https://siliconpr0n.org/archive/doku.php?id=infosecdj:infineon:sab-c167cr-lm">https://siliconpr0n.org/archive/doku.php?id=infosecdj:infineon:sab-c167cr-lm</a><br/><br/>#electronics #silicon #reverseengineering #microscopy<br/> <img src="https://media.infosec.exchange/infosec.exchange/media_attachments/files/114/162/353/805/792/227/original/d0fd7f50763078d1.jpg"> <br/> 2025-03-14T19:21:11Z https://njump.me/nevent1qqsqseg5jz3cm52w69w46n4n38frrrjmqfc8cm2euu8zq4342kkjpyqzyrpe47z8jr73q4d0y7q6w6nnmpsfqh7prt5gae6csafc42smmcnc570c24x If anyone else ever needs this, here is a pin map of Renesas RL78/F13. Pads with ? are power supply, but there seems to be a bit too many of them, maybe for bonding options.<br/><br/>#electronics #reverseengineering<br/> <img src="https://media.infosec.exchange/infosec.exchange/media_attachments/files/114/137/524/660/492/113/original/1047c4903f242f32.jpg"> <br/> 2025-03-10T09:54:57Z https://njump.me/nevent1qqsyk0rk4u9yem8pupat49fqnkp5e2jrwt3vl3c0jemcztdc9h3xqzqzyrpe47z8jr73q4d0y7q6w6nnmpsfqh7prt5gae6csafc42smmcnc5juxhpq Hello again, and welcome to the #nakeddiefriday show.<br/><br/>Today&#39;s guest is an older sibling of the previous entry, again a 80C51 derivative, the 83C592 (mask ROM) packaged as 80C592 (ROMless) by Philips. A short thread with some highlights follows.<br/><br/>SiPron page: <a href="https://siliconpr0n.org/archive/doku.php?id=infosecdj:philips:p80c592">https://siliconpr0n.org/archive/doku.php?id=infosecdj:philips:p80c592</a><br/><br/>Many thanks to debauer for donating the samples!<br/><br/>#electronics #reverseengineering #microscopy<br/> <img src="https://media.infosec.exchange/infosec.exchange/media_attachments/files/114/080/565/296/334/925/original/46c8b44cfa2708f7.jpg"> <br/> 2025-02-28T08:31:49Z https://njump.me/nevent1qqs8krfkvxrzg3c4ht3sdp4cspxk0plmyp8ux8t6pf4aupxu2m8dxrszyrpe47z8jr73q4d0y7q6w6nnmpsfqh7prt5gae6csafc42smmcnc5ltftd2 Happy #nakeddiefriday folks!<br/><br/>Today&#39;s specimen is p/n SC13890P23A by Motorola/Freescale. This came from an embedded cellular modem I tore out of [redacted]. The die is marked ATLAS-UL.<br/><br/>It is the most colourful die I have ever imaged. :rainbow_puke:<br/><br/>SiPron page: <a href="https://siliconpr0n.org/archive/doku.php?id=infosecdj:motorola:sc13890p23a">https://siliconpr0n.org/archive/doku.php?id=infosecdj:motorola:sc13890p23a</a><br/><br/>#electronics #reverseengineering #microscopy<br/> <img src="https://media.infosec.exchange/infosec.exchange/media_attachments/files/114/001/576/899/227/764/original/711017e1ca78481b.jpeg"> <br/> 2025-02-14T09:47:12Z https://njump.me/nevent1qqsx06th0gyrn6tud52mlk9uwqvtjuggrtwaprnwwyd2tcwvf2mqehqzyrpe47z8jr73q4d0y7q6w6nnmpsfqh7prt5gae6csafc42smmcnc5qtczsm In reply to <a href='/nevent1qqs8vf08qs7v8j9atwkwlynvh8pyz3fwh6yzcwxtft556ggwxnzercs5fa2xh'>nevent1q…a2xh</a><br/>_________________________<br/><br/>I&#39;d feel blessed if it moved at all on my head... 2025-02-13T10:15:30Z https://njump.me/nevent1qqsxczhkrmdugq0qdh70mqmrsmk85nnq7dnh4k7wdrla7a7d0t8entgzyrpe47z8jr73q4d0y7q6w6nnmpsfqh7prt5gae6csafc42smmcnc5jq7n6r In reply to <a href='/nevent1qqsyadqxnev9ple9xlpry0rp5tju4zfzp9f9046vz395lz9ekk09neg4l0gjc'>nevent1q…0gjc</a><br/>_________________________<br/><br/>the die there is different; missing the die ID 11484 and mask/copyright as well. 3 out of 4 shots you provided is for what looks like a test die, not the actual 6502 :) the one that seems to show parts of functional dies does not resemble a 6502 at all. are you 100% sure this is indeed a 6502? 2025-02-12T17:57:53Z https://njump.me/nevent1qqswjwcc7wluc4ku5r87vg765cgjhauev38hfqm2h2ujt9ungng8c2qzyrpe47z8jr73q4d0y7q6w6nnmpsfqh7prt5gae6csafc42smmcnc562n3eq In reply to <a href='/nevent1qqsdadyxgf5qvgaw3jaq08qlfw5alfgy8j76lph8s9aghs0lv7z0mvgs3wjm6'>nevent1q…wjm6</a><br/>_________________________<br/><br/>but you need to PAY them EVERY MONTH! how obscene 2025-02-10T16:10:31Z https://njump.me/nevent1qqs8wf06q6akucdl5gys95usvzdk6s5cpktq48cygcfka0ly5t75zkczyrpe47z8jr73q4d0y7q6w6nnmpsfqh7prt5gae6csafc42smmcnc56ssh95 In reply to <a href='/nevent1qqsvw43lk24pzm35sgk3vxc9cglz3jtw96vz7k62qkst4c7y9e3hmjcl0dh5n'>nevent1q…dh5n</a><br/>_________________________<br/><br/>nostarch, I guess. 2024-12-25T12:30:06Z https://njump.me/nevent1qqsqnsz88nketdtcgm4udgtf2jl8d5yck03rfyp08j8lyeundxt00hczyrpe47z8jr73q4d0y7q6w6nnmpsfqh7prt5gae6csafc42smmcnc5ukqh9v In reply to <a href='/nevent1qqsg96eaua6089qznaa6tcdt0drgynanfhljhjwj3y02t0s0880xqwcdhen0f'>nevent1q…en0f</a><br/>_________________________<br/><br/>yep. hardly anything will stop a determined person, especially if they are well funded. 2024-12-17T13:08:43Z https://njump.me/nevent1qqs0sxj6e3mwh45rke9qfx88vdar9phy3k58kmqct3ar4n4vz4yntnszyrpe47z8jr73q4d0y7q6w6nnmpsfqh7prt5gae6csafc42smmcnc5sm4pcl hardly anything is a bigger red flag in security than &#34;we make our code secure by restricting access to it.&#34; most of all, the startup code in ROM. 2024-12-16T21:16:55Z https://njump.me/nevent1qqs97u57vetwgqt3gzh5na5tgurtjxescjsn9u48wcqta3h4axhsvpgzyrpe47z8jr73q4d0y7q6w6nnmpsfqh7prt5gae6csafc42smmcnc5vxe00n In reply to <a href='/nevent1qqsrvjueewnxf5swjv7n657nemn6s8splk3rpm9wpc3rdxxlhdd4jzq73nq4v'>nevent1q…nq4v</a><br/>_________________________<br/><br/>when I graduated from high school, I gave up on chemistry because I saw no path forward with that in my homeland... turns out I was right. still saddens me somewhat, as I wasn&#39;t half bad with it. 2024-11-24T11:32:13Z https://njump.me/nevent1qqs87lefmmpfcceaxpahw0wke2hrums32chvyqtgdm0va4we7dz5t8szyrpe47z8jr73q4d0y7q6w6nnmpsfqh7prt5gae6csafc42smmcnc55kwe4k In reply to <a href='/nevent1qqsr6n9k46svl56a4cqnpqkr2exedua63v3hh30kmj2u4ujgv2etjnsssh2uy'>nevent1q…h2uy</a><br/>_________________________<br/><br/>and in fact it&#39;s better if it does hurt them. 2024-11-10T19:10:07Z https://njump.me/nevent1qqs0ng3y4xsanv6sv8kd5ljr3mqx3xrv6r06ry2rnvkuu4zxdycr8pczyrpe47z8jr73q4d0y7q6w6nnmpsfqh7prt5gae6csafc42smmcnc5ssw73e In reply to <a href='/nevent1qqsptu6eysd4f5smf73sqvn7q74wx94exrram2fsx2zl23jvqluvuzqld7a4n'>nevent1q…7a4n</a><br/>_________________________<br/><br/>looks like some lines are not driven by the controller chip, meaning the display is busted now. 2024-10-20T14:57:52Z https://njump.me/nevent1qqsg0gs3fa99cexpj9je80zxnhcmjq0ljlerg7v3ptlmjscep9v0ekszyrpe47z8jr73q4d0y7q6w6nnmpsfqh7prt5gae6csafc42smmcnc5s3jeyn In reply to <a href='/nevent1qqsxkxz0usrnhzcl2dlyumyfalqjcz5a5e0gmprjpkkqkupeaq25d0gj43nvl'>nevent1q…3nvl</a><br/>_________________________<br/><br/>Hi Bert, I was asked if there are any official sources that we could use to corroborate this decision? If you could drop a couple links that would be greatly appreciated. 2024-09-27T11:33:13Z https://njump.me/nevent1qqstp8ll9f8gkl7u0tc6k633wmajphzq7uc4wjyh82gvw5l0vnldnlgzyrpe47z8jr73q4d0y7q6w6nnmpsfqh7prt5gae6csafc42smmcnc5gk59qx #stolenmemes<br/> <img src="https://media.infosec.exchange/infosec.exchange/media_attachments/files/113/123/722/366/155/615/original/a042bb7e7b46defc.png"> <br/> 2024-09-12T08:50:24Z https://njump.me/nevent1qqsr0thd30jw0cczxmqmde5qccrcq90g0w7jjpngdnps3phtqarq5nszyrpe47z8jr73q4d0y7q6w6nnmpsfqh7prt5gae6csafc42smmcnc50rr9yj Copper sulfate pentatydrate that has been growing for the past two weeks.<br/><br/>#chemistry #crystals<br/> <img src="https://media.infosec.exchange/infosec.exchange/media_attachments/files/112/155/709/958/435/058/original/8de7cf8523c88a1c.jpeg"> <br/> 2024-03-25T09:52:49Z https://njump.me/nevent1qqspcdes7ndgm5ax0cezuns88jh8ftv8dfqe49me5hs5za9gykdahjgzyrpe47z8jr73q4d0y7q6w6nnmpsfqh7prt5gae6csafc42smmcnc59w64kp Oh hey. Just wanted to let you know today that I am open to hobby/public IC decapping and imaging projects. Boosts and other sharing are always appreciated!<br/><br/>More info here: <a href="https://siliconpr0n.org/archive/doku.php?id=infosecdj:start#commissioning_work">https://siliconpr0n.org/archive/doku.php?id=infosecdj:start#commissioning_work</a><br/><br/>#microscopy #reverseengineering #electronics 2023-05-11T20:34:39Z