StephensDev
Zenith Data Systems 8-bit ISA Backplane Board 85-2964-3
Acquisition Date: 2024-07-10
Contents
Creating ATX power Adapter
The power connector on this Zenith backplane is a Molex 03-06-1152 connector, but it is no longer manufactured, so I decided to 3d print a new one to save $15.
The female connector on the board
V V V V
| 3| 2| 1|/ | G|+12|+12|/
| 6| 5| 4|\ | G| G|-12|\
| 9| 8| 7| | G| +5| NC|
|12|11|10|/ | G| +5| NC|/
|15|14|13|\ | G| +5| NC|\
Note: -5v is created from the -12v rail through a 320L 79L05 A718
Log
- 2025-06-04 - Making a 03-06-1152 molex to ATX adapter, so this can be powered via ATX power supply.
- 2024-07-10 – Acquired to assist in testing the WYSE 8088 CPU board. On initial inspection, the board appeared relatively clean, though light rust was present around some screw contact points and a few random solder joints. I began the restoration process by giving it a wash with warm, soapy water.