µ[micro]electronics info - CP/M

Z80 + ATMega644 as CP/M Boot Loader

admin — Sun, 06 Mar 2011 18:40:17 +0000

Why to prepare an address decoder for specific regions to switch between RAM and ROM? You can use 64kB SRAM chip for the whole space, kickstarted by ATMega. The way shows Ben Ryves.

Emulating a Z80 CP/M computer on ATMega88

admin — Fri, 30 Apr 2010 10:21:11 +0000

Yes, we all know many emulators of old processors "on the chip", but as far as I remember this is the first attempt to emulate a CP/M machine (including Z80) I ever seen.

Breadboard CP/M

admin — Sun, 11 Apr 2010 12:17:07 +0000

A simple CP/M system fits in breadboard nowadays. Look at Grant's Work-in-progress version.

Photo: Grant Searle

QP/M

admin — Sun, 24 May 2009 17:18:09 +0000

Something nostalgic: QP/M is a time/date stamping and speedy CP/M 2.2 replacement that fits in the same memory space.

MIC80

admin — Wed, 29 Apr 2009 04:47:51 +0000

A CP/M compatible machine based on Zilog eZ80.

P112

admin — Thu, 22 Jan 2009 17:16:01 +0000

An older "homebrew" computer based on Zilog Z80182 (upgraded Z180) for inspiration.

Z80 code bits from MICROCode

admin — Thu, 11 Dec 2008 22:32:23 +0000

Some old software from MICROCode for your CP/M computers

A lot of reading

admin — Tue, 25 Nov 2008 19:27:38 +0000

Old magazines, old OS, old games source code, all's old today.