HP 2108A

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
Slot	Part	Description
110	12897B	Dual Channel Port Controller (D.C.P.C.)
111	12892	Memory Protect
118	2102A	Memory Controller
114	5061-1332	16KW Memory Module
115	5060-8359	8KW Memory Module
116	5060-8359	8KW Memory Module
Rear Cage
Slot	Part	Description
17	02100-60060	Terminator Card
16	12597A	8 Bit Duplex Register
15	12880A	CRT Interface
14	12966A	Buffered Async Communications (BACI)
13	13210A	7900 Disc Interface 2
12	13210A	7900 Disc Interface 1
11	12531D	H.S. Terminal Interface
10	12539-60003	Time 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.

A short video of the "KITT" program.

Loading paper tape BASIC on the 2108A.

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Last updated on Wednesday, March 03, 2021