Table of Contents
/* Imported from Wayback Machine
Original URL : https://retrobrewcomputers.org/doku.php?id=builderpages:plasmo:g8pp:g8ppbase68k8 Snapshot date: 2026-01-20 Generator : wayback-archiver
*/
Table of Contents
G8PPBase + 68K8
Introduction
This is a two-board configuration consists of a G8PP in baseline configuration and a simple MC68008 board on RC2014 backplane.
68008 CPU Card
Prototype 68008 CPU Card
This is a prototype of the 68008 CPU card. It is superseded by the PC board version.
Schematic of prototype 68008 CPU card
RC2014 Signal Definition
The following RC2014 signals are redefined for G8PPBase+68K8:
RC2014 Pin 19 (nM1) — A16 (68008 pin 16)
RC2014 Pin 23 (nMREQ) — nAS (68008 pin 28)
RC2014 Pin 24 (nWR) — RnW (68008 pin 30)
RC2014 Pin 25 (nRD) — A17 (68008 pin 17)
RC2014 Pin 26 (nIORQ) — A18 (68008 pin 18)
RC2014 Pin 37 (Spare 1) — nBR (68008 pin 33)
RC2014 Pin 38 (Spare 2) — nDTACK (68008 pin 31)
RC2014 Pin 39 (Spare 3) — A19 (68008 pin 19)
G8PP Baseline Configuration
G8PPBase+68K8
Serial Bootstrap, a bare minimum S record loader. It automatically jumps to 0x400 after a successful load. The serial communication is 38400, N81, no parity
68K8 Monitor ←still buggy, but good enough for file loading and memory display/mod
CP/M-68K, BIOS/CCP/BDOS for G8PPBase+68K8
CP/M68K distribution files
Manuals and Instructions
Getting started with G8PPBase+68K8 ←configure altera epm7128, load bootstrap, load z80 monitor, load cp/m
68K8 Monitor manual