Il VDC del C128 è una cosa strana. E' un clone Commodore delle schede CGA per PC, con una sua memoria interna che può usare solo il VDC perché la macchina non "la vede" (una "memoria d'ombra"), e che può essere espansa fino a 64k in totale con i kit appropriati. Espanso al limite, il VDC può a risoluzioni folli per questa fascia di macchine, fino a 800x600 monocromatico in certe demo.
https://www.youtube.com/watch?v=X95wK7FS5NY
#c128 #retrocomptuing #commodore #videogiochi #retrocomputer
An advertisement for a failed user interface device, the "mouse" - circa 1984.
The mouse might have seen wider adoption had it not debuted at an astonishing $195, or nearly $500 in 2026 dollars.
As it stood, it simply could not compete with the light pens that we all know and use today.
I’ve been tinkering off and on for nearly a year with Gentoo Linux on a 800 MHz iBook G4 from 2003. As you may be aware, pickings are slim for active Linux distros that support PPC. Besides the excellent Lubuntu 16.04 Remix by @wicknix, and Adelie Linux, the only other option that I found is...
So, it looks like I can fit the “core system” (CPU, RAM, ROM, address decoding) on one standard size #Z50Bus card.
There’s also an #RCBus version
https://www.tindie.com/products/tindiescx/sc701-rcbus-80pin-backplane-kit/
I like this one with built in power and reset
https://www.tindie.com/products/tindiescx/sc513-modular-backplane-kit-for-z50bus/
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.
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.
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
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
Raster
gloriouscow
Joe Williams
Ted C. Howard