I think I’m at the point where I would like to make a PCB out of my 6502 machine. It started life as the Ben Eater 6502 kit, but I’ve made several changes from the original design.
The end goal is to have a ~1980 era home computer form-factor. Everything on a single board inside the keyboard housing like an Apple II, Atari 800, or Commodore 64.
1/x
I’m still prototyping component of this system (sound generation, mass storage etc), so I’m not ready for the final design.
My question is, what is the best interim design?
I could build modules that connect to a backplane that shares the main system bus.
I could build a partial single-board system with pin headers for the system bus.
Or is there a better way to approach this?
2/2
Picking this thread back up while I wait on my chili to simmer.
I’m considering buying an existing backplane kit like an #rc2014 and just using it for my own purposes (ignore the official pin outs).
Then I could build dev modules of my system and connect using that.
So, after looking at backplane kits on Tindie, I think one designed for the #Z50Bus will work. If I remove all the Z80 specific pins that don't have 6502 equivalents, that leave enough room for all my IO_SELECT signals.
I like this one with built in power and reset
https://www.tindie.com/products/tindiescx/sc513-modular-backplane-kit-for-z50bus/
There’s also an #RCBus version
https://www.tindie.com/products/tindiescx/sc701-rcbus-80pin-backplane-kit/
So, it looks like I can fit the “core system” (CPU, RAM, ROM, address decoding) on one standard size #Z50Bus card.
Ted C. Howard