Baffa-X PPI / ROM
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Programmable Peripheral Interface 8255
Settings
Default Port: A0h-A2h
| JP1 (A15/ROM Page) |
|---|
| pin1 88| | VCC | Upper 32KB Page |
| pin2 8|8 | A15 | 64KB Rom on Slot 0 |
| pin3 |88 | GND | Lower 32KB Page |
| JP4 |
|---|
| pin1 | Slot 0 |
| pin2 | Slot 1 |
| pin3 | Slot 2 |
| pin4 | Slot 3 (CSRAM) |
| pin5 | Cassette Motor |
| pin6 | Cassette Out |
| pin7 | Keyboard Beep |
| pin8 | Slot Wait |
| JP5 |
|---|
| pin1 | CS PRT (Printer) |
| pin2 | CS VDP (Video) |
| pin3 | CS PSG (Sound) |
| pin4 | CS PPI (Programmable Peripheral Interface 8255) |
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