Altair 8800b Turnkey Module

Original Turnkey Module with RAM

1k Turnkey RAM

Theory of Operation

Page 4-10, Page 4-11, Page 4-12, Page 4-13, Page 4-14, Page 4-15, Page 4-16,

Page 4-17, Page 4-18, Page 4-19, Page 4-20, Page 4-21, Page 4-22, Page 4-23,

Page 4-24, Page 4-25, Page 4-26, Page 4-27, Page 4-28, Page 4-29

Boot Loader/Turnkey Monitor Programs

Page 9-2, Page 10-2, Page 10-3, Page 10-4, Page 10-5, Page 10-6, Page 10-7

PCC Service Bulletin

System Turnkey Modile Malfunction

Page 1, Page 2, Page 3, Page 4, Page 5, Page 6, and Page 7

Modified Turnkey Module

Factory 88-SYS-CLG Modification

88-SYS-CLG Modification (Board Back)

Turnkey Module Diagram

Start Address, SIO Address, amd Prom Address

(Modified Board)

Prom/RAM Start Addresses on Original Turnkey Module

RAM and Prom Sockets on an original Turnkey Module

Prom Sockets

MWRITE Jumper for Turnkey 8800b

Remove Jumper or Front Panel 8800b

Internal Cable for 8800b Turnkey

Front Panel Board for 8800b Turnkey (front)

The blue switch on the front panel board is a replacement.

Altair switches are orange.

Front Panel Board for 8800b Turnkey (rear)

Free counters provided by Andale.