Heathkit H8, ca. 1981 | |
CPU: | Z80 @ 2.048MHz |
RAM: | 48KB |
Floppy Drives: | Two SS hard-sectored drives at 100KB each (Z87) |
Display: | |
Ports: | 4 RS-232 |
Model: | H8 |
Serial No.: | 02751 |
OS: | HDOS |
ROM: | 4KB |
Original Price: | |
Notes: |
This system has the following boards:
The HA-8-6 Z80 CPU board was heavily modified, for unknown purposes. I was forced to remove all the modifications and restore the board to its default state. The DG-32D RAM board also had a bad 4116 chip and the front panel had a bad 2N3904 transistor in the reset circuit. The last three pictures show the system running CP/M 2.2.04 from a Z87 drive unit. I've configured the H8 with a Z80 board from a recent Norberto Collado design, and the H17 controller. The Z80 board has 64KB of RAM, two serial ports and a real-time clock. Details, here. |