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Text File | 1996-01-10 | 2.0 KB | 59 lines | [TEXT/ttxt] |
- Serial port pinouts:
-
- Use this information at your own risk. I encourage you to verify
- this elsewhere to prevent bad things from happening.
-
- The connectors should be available at Radio Shack or some other
- electronics parts store to make your own cable.
-
- AppleTalk cables may work as they use the inverted send and receive
- pins. (TxD-, RxD-), but I have not tested them.
-
- Mac 512KE serial port (DB9):
- Looking at the back of the Macintosh (female socket) or the wiring
- side of male plug:
-
- 5 4 3 2 1
- 9 8 7 6
-
- Pin Name Description/Notes
- 1 Ground
- 2 +5V See Inside Macintosh for power limits
- 3 Ground
- 4 TxD+ Transmit Data line
- 5 TxD- Transmit Data line
- 6 +12V See Macintosh Hardware chapter for power limits
- 7 HSK HandShaKe: CTS or TRxC, depends on Zilog 8530 mode
- 8 RxD+ Receive Data line; ground this line to emulate RS232
- 9 RxD- Receive Data line
-
- For the Booster without feedback, use Pins 1 and 4. Feedback goes
- to pin 8. I had a Mac 512KE wired this way.
- These should be connected to your booster as specified in the
- instructions given with them for running in Booster mode.
-
-
- Mac Plus and higher (Mini DIN 8):
- Looking at the back of the Macintosh (Female Socket) or wiring side
- of male plug:
-
- 8 7 6
- 5 4 3
- 2 1
-
- Pin Name Description/Notes
- 1 HSKo Output Handshake (from Zilog 8530 DTR pin)
- 2 HSKi Input Handshake (CTS) or TRxC (depends on 8530 mode)
- 3 TxD- Transmit Data line
- 4 Ground
- 5 RxD- Receive Data line
- 6 TxD+ Transmit Data line
- 7 Not connected
- 8 RxD+ Receive Data line; ground this line to emulate RS232
-
- For the Booster without feedback, use Pins 4 and 3. Feedback goes to pin 8.
- I've tested this so I know it works.
-
- These should be connected to your booster as specified in the
- instructions given with them for running in Booster mode.
-