This custom configuration was done by Ray Carlsen so I suggest you contact him.
However, it's clear this arrangement was done simply by comparing the pinout of 41464 DRAMs vs 4164 DRAMs used on board 250407 and earlier. Anyone with a bit of knowledge in electronics should be able to do it easily.
Seemed to be the honest thing to do... glad to know you like it!
Declaring interest for a couple of these, shipping to Alberta, Canada.
Thanks
Thomas
COREi64 Component Design and Electronics for Retro Computing Platforms
- Supported Platforms: Atari, Amiga, Commodore,Texas Instruments, Apple and Cross-Platform Boards
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COREi64 Component Design and Electronics for Retro Computing Platforms
- Supported Platforms: Atari, Amiga, Commodore,Texas Instruments, Apple and Cross-Platform Boards