APPENDIX B
PARALLEL PIN CONFIGURATIONS
APPENDIX C
BLOCK DIAGRAM
11- Busy (Active HIGH)
Printer
10- Acknowledge (Active LOW)
Printer
9- Data Bit 8 (MSB)
Computer
8- Data Bit 7
Computer
7- Data Bit 6
Computer
6- Data Bit 5
Computer
5- Data Bit 4
Computer
4- Data Bit 3
Computer
3- Data Bit 2
Computer
2- Data Bit 1 (LSB)
Computer
1- Data Strobe (Active LOW)
Computer
SOURCE
TRANSMITTER / RECEIVER (DB-25)
SOURCE
Common
Return / Ground -25
Common
Return / Ground -24
Common
Return / Ground -23
Common
Return / Ground -22
Common
Return / Ground -21
Common
Return / Ground -20
Common
Return / Ground -19
Common
Return / Ground -18
13
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