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Added cassette #2 pins

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Gregor Riepl 2022-07-24 22:56:44 +02:00
parent 5e7c5b1bc9
commit f5142090f9
1 changed files with 6 additions and 6 deletions
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12
README.md
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@ -26,12 +26,12 @@ a 9V supply rail.
The other pin mappings are as follows:
| PET pin | ESP pin | Direction | Internal connection |
|----------------|---------|-----------|---------------------|
| Cassette Write | RXD | PET->ESP | VIA PB3 |
| Cassette Read | TXD | ESP->PET | PIA1 CA1 |
| Cassette Motor | CTS | PET->ESP | PIA1 CB2 |
| Cassette Sense | RTS | ESP->PET | PIA PA4 |
| PET pin | ESP pin | Direction | Cassette #1 internal | Cassette #2 internal |
|----------------|---------|-----------|----------------------|----------------------|
| Cassette Write | RXD | PET->ESP | VIA PB3 | VIA PB3 (same as #1) |
| Cassette Read | TXD | ESP->PET | PIA1 CA1 | VIA CB1 |
| Cassette Motor | CTS | PET->ESP | PIA1 CB2 | VIA PB4 |
| Cassette Sense | RTS | ESP->PET | PIA1 PA4 | PIA1 PA5 |
A suitable serial signal (RS-232-like) must be generated/decoded in
software. Make sure that no cassette port #1 access is generated while