Interfaces of IBM and PC-1360


Index


PC-1360 serial interface 15 pin IO

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1protective ground for repairs(not used) -
2transmit dataSD out
3receive dataRD in
4ready to sendRS(HIGH: sends carrier) out
5clear to sendCS(HIGH: transmits)in
7groundGND(level 0 for transfer)-
8carrier detectedCD(HIGH: carrier detected)in
105 voltsVCpower supply-
11ready to receiveRR(HIGH: receiving possible)out
12periph. signalsPAK(for serial printers from SHARP)in
135 voltsVCpower supply-
14data terminal readyER(HIGH: data terminal ready)out
15periph. signalsPRQ(for serial printers from SHARP)out

The pocket doesn't use all of these pins:
Pin 5 high is enough to make it send data.
On pin 11 only it tells that it's ready for receiving data.



PC-1360 printer interface 11 pin IO

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1not used- -
2+6VVCCPower supply-
3GroundGNDgroundin
4line-Use address &3800-FF: see portsout
5line-Use address &3A00-FF: see portsout
6LOAD-Used by CLOAD, you can get this line through TEST 128in
7SAVE-Used by CSAVE, you can set this line through port C, bits 4,5 and 6out
8line-B port/Use address &3A00-FF: see portsin/out
9line-B portin/out
10line-Use address &3A00-FF: see portsout
11line-Use address &3A00-FF: see portsout




Desktop-PC serial interface 9/25 pin IO

9 pins25 pinsNameDescriptionDirection
18CDCarrier Detect - Modem has carrier and is onlinein
23RxDReceives datain
32TxDSends data with +12V at HIGH and -12V at LOWout
420DTRData Terminal Ready - computer is ready for receiving dataout
57GNDGround-
66DSRData Set Ready - The other computer is ready to receivein
74RTSRequest To Send - This line makes the other to get ready for receivingout
85CTSClear To Send - When the other RTS sends HIGH to this line the computer starts transmittingin
922RIRing - an incoming call is detected by the modemin


Hardware ports

Address &3800-FF = 14336-14591 (only output)

BitPin serial 15-pin-interface
04 (and pin 4 at 11-pin-interface)
114
211

Address &3A00-FF = 14848-15103 (only output)

BitPin 11 pin interface
011
110
25
38

Port B (&5D = 93 internal RAM)

BitPinS=15 D=11-pin-interfaceI=input,O=output
38DI
49DIO
53SIO
65SIO
78SIO

Port F (only output, &5E = 94 internal RAM)

BitPin serial
12




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