Great job!
1/ Now that you have a fully working replica, have you tried capturing and decoding serial stream between drive and controller? Looking at https://twitter.com/andyAVAVsystems/status/1192847018483425280/photo/2
there are 3 serial streams? (or one and 2 pins for controlling direction?) + clock + attention (irq like?) and 4 mysterious maybe unused pins. Something like Salea logic clone with 8 bits should be enough to grab it in front of DS26LS31/DS26LS32. Looking at internal pictures of CM100 it has to be some very basic protocol, I wouldnt be surprised if all it does is sending raw CD data straight from EFM decoder, and the rest is handled in the driver.
2/ Could you post the diagram in pdf/png format so people can readily see it when visiting the repo without downloading/configuring kicad? This would also help with any potential referencing it on the forums. Easier to link someone a png than ask them to install kicad.
ps: I posted links to yt and this repo on https://forum.vcfed.org/index.php?threads/philips-cm100-the-first-cd-rom-found.35616 (post waiting for moderation) as that seemed like the place with highest concentration of people talking about CM100 :) You mentioned not being the best with self promotion - I think changing title of YT clip to emphasize this is a replica of a controller for the FIRST computer CDROM drive EVER MADE would help :) Some sources like wikipedia claim Denon & Sony showing first cdrom at 1985 Japan comdex, but the unit in Computer Chronicles clip is a Sony CDU-1 introduced in 1985. CHM https://www.computerhistory.org/storageengine/philips-demonstrates-digital-compact-disc/
"In 1984 DEC introduced the first computer connected CD-ROM player from a major systems manufacturer; the Philips designed RRD-50 (Philips LMSI CM100).". Looks like Wiki needs correction.
btw LGR did a video about another very early drive, Hitachi CDR-1502S from 1986 https://www.youtube.com/watch?v=yBupNdYe08g (error in video claiming its from 1987, his unit was but plenty of references in 1986 press).
ps2 DEC RRD50 Digital Disk Drive Users Guide https://manx-docs.org/collections/antonio/dec/rrd50ug2.pdf
Great job!
1/ Now that you have a fully working replica, have you tried capturing and decoding serial stream between drive and controller? Looking at https://twitter.com/andyAVAVsystems/status/1192847018483425280/photo/2
there are 3 serial streams? (or one and 2 pins for controlling direction?) + clock + attention (irq like?) and 4 mysterious maybe unused pins. Something like Salea logic clone with 8 bits should be enough to grab it in front of DS26LS31/DS26LS32. Looking at internal pictures of CM100 it has to be some very basic protocol, I wouldnt be surprised if all it does is sending raw CD data straight from EFM decoder, and the rest is handled in the driver.
2/ Could you post the diagram in pdf/png format so people can readily see it when visiting the repo without downloading/configuring kicad? This would also help with any potential referencing it on the forums. Easier to link someone a png than ask them to install kicad.
ps: I posted links to yt and this repo on https://forum.vcfed.org/index.php?threads/philips-cm100-the-first-cd-rom-found.35616 (post waiting for moderation) as that seemed like the place with highest concentration of people talking about CM100 :) You mentioned not being the best with self promotion - I think changing title of YT clip to emphasize this is a replica of a controller for the FIRST computer CDROM drive EVER MADE would help :) Some sources like wikipedia claim Denon & Sony showing first cdrom at 1985 Japan comdex, but the unit in Computer Chronicles clip is a Sony CDU-1 introduced in 1985. CHM https://www.computerhistory.org/storageengine/philips-demonstrates-digital-compact-disc/
"In 1984 DEC introduced the first computer connected CD-ROM player from a major systems manufacturer; the Philips designed RRD-50 (Philips LMSI CM100).". Looks like Wiki needs correction.
btw LGR did a video about another very early drive, Hitachi CDR-1502S from 1986 https://www.youtube.com/watch?v=yBupNdYe08g (error in video claiming its from 1987, his unit was but plenty of references in 1986 press).
ps2 DEC RRD50 Digital Disk Drive Users Guide https://manx-docs.org/collections/antonio/dec/rrd50ug2.pdf