All my 68K designs are now on GitHub

[Bill Shen]

I have copied my 68K design files from retrobrewcomputer to GitHub and created an index page that listed all designs chronologically from 2017 to 2026.  There are 17 designs, each with the year of creation, a short description, picture, and link to respective GitHub page.  This is the index page in GitHub, https://github.com/Plasmode/My68K

Bill

[Dave White]

Thanks for that Bill - I've downloaded them all to GitHub Desktop for posterity. 

Are you still selling any of these modules? I have a few of your cards, but would be interested in some others if you still sell them.

[Mark Durham]

Thanks for sharing Bill. I'm always looking at your designs for a bit of inspiration.

[Bill Shen]

Hi Dave,

My priority is transferring my design files from retrobrewcomputers website to GitHub.  I still have dozens of Z80/180/280, 6502, RC2014 peripherals designs to go.  I also want to assemble a copy of every design to make sure the design transfer is complete.  I still sell Tiny68K and CB030 assembled and tested, but the rest of 68K, Zx80, 6502 designs will need maybe a year before I’m ready to sell assembled&tested boards.   In the meantime the complete design files are on GitHub, so feel free to download and build boards yourself.  You can help me by pointing out missing or incorrect design files in my GitHub repositories.

Bill

[Dave White]

Sounds good to me Bill. I just need to hunt down a reliable source of the EPM7128 chips.

[Bill Shen]

I myself have a large stock of EPM7128, but I do understand sourcing EPM7128 is a big challenge thus a serious obstacle to many of my designs.  I believe EPM7128 is compatible with ATF1508 which are still in stock for about $15.  I do plan to convert EPM7128 design files to ATF1508 and verify the converted CPLD programming file will work correctly.  If there are demands, I can also solder down and program EPM7128 then sell the partially assembled board for $30.  This may solve the problem of sourcing CPLD and assembling fine-pitch SMT.

Bill

[Harry Speer]

Thanks, Bill. I have always admired your work and looked at it for ideas. 

Since RetroBrew went down, it is VERY Good that you were able to

grab everything before it goes down again.

Great Work !!

Thanks,

Harry

[7alken]

hi all, thanks Bill for everything, I was surprised with joy that retrobrew is back recently, not noticed it quickly, busy here ...
I never had anything with M68k, my parents can't afford anything with it even after market crash at west, so I had Atari800XL (6000czk at that time in local "tuzex" luxury shop, which meant also contacting "vexláci" (black market with exchanging czk for coupons for that shop...) and this was already 2-3 monthly salary here ...)
(plus there were rumors that M68k is embargooed for us initially as it was inside Pershing ugly devices or so ...), so only friend Dan Turner from our computer club had received Sinclair QL from his family in emigration or so ... there I saw it first time for few hours only... sure, he was not excited with it without any resources (no internet, no BBSes mostly, only drastically expensive calls outside, but lines were not good even for modems ...) - only later there were AtariSt and Amiga, sure; but I skipped from 800xl to damaged Packard Bell PC/AT for my own repair to Am386sx-25 ... and soon cheap OS/2 Warp without windows, may be year or two before Win95 (step back for a while).

while ebooks are normal these days, I managed to get from ebay this book, very nice, even with hard "cheatsheet card" (not expected, surprise - I may scan it somehow in details), I had similar BW smaller card with 6502 ISA during my Atari800xl ... also, year ago I tried to do "clean audio"  for that Motorola 68000 oral history documentary ... as without it, I several times fell asleep during watching it ... it resulted in "almost forensic audio track" where are loud even ZIPPO cigarete lighters from filming crew probably ...  I did quite hard -20dB noise reductions and it is too much, also audio is grabbed only from single camera probably closest to "most loud guy" while others are talking mostly silent ... and Tom is difficult with his speech also, so I went with 10hrs of manual repairing ... even this can be today probably assisted by AI-agents ... to split to tracks for Ardour to handle each guy separatelly after initial noise reduction (by subtracted sample of spectrum) ... this is still not complete, I want to do it and provide it as unlisted on youtube for "review" here...

P.

      

[7alken]

I found that card in archive, but the scan is not good, so will try better, okok
https://archive.org/details/mc-68000-16-bit-microprocessor-programming-card

also another nice card 
https://os9projects.com/CD_Archive/TUTORIAL/REF/CARD/68000_Ref_Card.pdf

(I didn't found the book scanned, this old edition, but maybe only that page with old NMOS and HMOS structures is there,
but it seems is available even cheaper on amazon) 
P.