Date: 01/01/2024
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KBD/2 Schematic

In late 2023, I needed to make an ASCII keyboard without paying alot on money for on. Trying to find schematics on vintage keyboard a somewhat of a struggle but after a while I found one that I was able to recreate on my own time.

Here are some images of the board.

Orginial Specifiations:

• 62 Keys
• Strobed Parallel ASCII
• Reset Key

My Modified Version

• 61 Keys
• Reset Key
• 60% Layout

Kicad Schematic

PCB Images

Completed Build

Pre-Release Board Errors

• Added bodge wires to fix U5 counting issues.
• Add bodge wires to fix U4 to U5 counting outputs.
• Added bodged wires to fix U6 clear line.
• Added bodge wire for full ascii mod.

To-Do List:

• Add Z80 code to interface keyboard.
• Add bodge fixes on originial boards.