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Old 10 May 2011, 01:45   #19
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Join Date: Jan 2008
Location: United Kingdom
Age: 41
Posts: 623

You are aware that the original files have been available since 1993 @ FTP:// ?

You have missed the decoupling capacitors from your schematic, they are essential for it to work. To improve the design, some SMT parts would help, notably on the resistors, capacitors and clock crystal. This will simplify layout and in the case of the clock crystal reduce the EMI emissions.

GALS and PALs are obsolete, the 16R4s and 16L8s went out of manufacture years ago.

I can't release it right now as I need to tidy up first, but I have the core logic from this + a few other bits targeted at a Xilinx XC9572 CPLD from my abandoned accelerator project. You can buy PLCC parts if you are desperate to avoid SMT parts.

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