This system has the following boards:

• H8-16 16K Static RAM 85-2197-1
• H8-17 H17 Diskette Controller Board Hard-sector 85-2204-1
• DG-32D 32K Memory Board jumpered for Z80
• HA8-6 Z80 CPU 85-2609-1
• Control Circuit Board 85-1935-1
• H8-4 Multi Port Serial I/O 85-2556-1
• Trionyx T-H90 backplane

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.

Pictures 12 and 13 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 Les Bird/Norberto Collado design, and the H17 controller. The Z80 board has 64KB of RAM, two serial ports and a real-time clock. Details, here.

Finally, I've replaced the H17 with an H37-H67 soft-sectored controller connected to a dual Gotek unit, and replaced the DUART daughterboard on the Z80 board with a DUART/USB board. The DUART/USB board has a VDIP1 installed, which allows copying files to/from a USB stick. The system is show booting 64KB CP/M 2.2.04, and switching to a 4MHz clock.