Here are two diagrams that I drew years ago whilst seeking to understand the various sub-systems of the BBC Micro.
The first is of the System VIA, the second of the Keyboard.
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Here are two diagrams that I drew years ago whilst seeking to understand the various sub-systems of the BBC Micro.
The first is of the System VIA, the second of the Keyboard.
very helpful,thanks.
I want to convert this hardware to 8051 code in combination with a ps2 keyboard.
Bas