HP 2108A

 
Mainboard top
Mainboard bottom
Instruction ROM 1
Instruction ROM 2
Instruction ROM 3
Boot Loader PROMs
Front Panel Lights
 
HP 2108A from 1975

CPU: Microprogrammed MSI and SSI TTL, 16-bit, 18.5MHz master clock
RAM: 32KW
Loader ROMs: 12992K: paper tape, 12992A: 7900 disc
OS:  
Serial Number: 1512A00519
Boards:
Front Cage
SlotPartDescription
11012897BDual Channel Port Controller (D.C.P.C.)
11112892Memory Protect
1182102AMemory Controller
1145061-133216KW Memory Module
1155060-83598KW Memory Module
1165060-83598KW Memory Module
Rear Cage
SlotPartDescription
1702100-60060Terminator Card
1612597A8 Bit Duplex Register
1512880ACRT Interface
1412966ABuffered Async Communications (BACI)
1313210A7900 Disc Interface 2
1213210A7900 Disc Interface 1
1112531DH.S. Terminal Interface
1012539-60003Time Base Generator
Notes:

This machine was very clean, and the only thing I had to do was replace a broken fuse holder.

Here's my procedure for configuring Paper Tape BASIC in SimH.


KITT Video

KITT LED Video

A short video of the "KITT" program.

Paper Tape BASIC Video

Paper Tape BASIC Video

Loading paper tape BASIC on the 2108A.

Return to the HP page.
Return to the Hardware page.
Return to the Old Technology Collection page.

Last updated on Wednesday, March 03, 2021