8008 Page

Jim's 8008 Page

(note: this is not a public page, as it
contains copyrighted materials.
Please do not abuse it)

�

My Mark-8 reconstruction, built 25 years after the original Radio-Electronics article:
The PCBs are new, the ICs and other components are as close to the correct age as possible.� The switch PCB is my design; the original switches were hand-wired.
(click on picture for a more detailed view)

Tools

My 8008 Interactive Assembler for Windows (570KB)� (sample program)
updated 7/29/2002 - V1.12 - added hex file output, new directives (BSS, DATA, CODE) and new opcode LHLI
updated 10/31/2002 - V1.15 - added file backup and fixed some display bugs

8008 Inverse Assembler for HP Logic Analyzers� Simple, but it works (screen shot).� As few as 12 connections to the CPU and you can see what instructions are being executed.� There are two versions; one demultiplexes the 8008 address bus� itself, and one uses the latched address present in most designs and has a bit more flexibility in clocking and tracing.� Source code included.

Hardware

Tiny8, a minimal but powerful 8008 computer using some slightly anachronistic components!
This is the complete project with board layouts, a demo and monitor program and more.

The switch printed circuit board.�� I mounted the switches on a printed circuit board for a cleaner appearance and a better mechanical mounting, since I didn't want to mount my Mark-8 inside a cabinet.

The Mark-8 prototyping board.� I laid out this board in order to have a clean way to add some memory and I/O to my Mark-8.� It is intended to replace the existing memory board, but could also co-exist with it.

Documentation for the 1974 (?) Godbout 4K Memory card using 2102's.� This is very interesting - a 3rd party memory board for the Mark-8 by Godbout, later a major S-100 vendor.� The only one of these boards still in existence that I am aware is in Bryan Blackburn's Mark-8.� The earliest Godbout ads that I have (Byte 1975) make no mention of this board, but it's likely that it is mentioned in the newsletters below somewhere.

(TIFF, 2 pages, 358 KB)

Documents