Baffa-2 Parallel IO / Printer Interface
This card used a Zilog PIO (Parallel Input-Output) which is a programmable, two port device which provides a TTL compatible interface between peripheral devices and the Z80-CPU.
It has two ways to connect devices: using the PIO Header or using the DB-29 Port. The DB-29 port also allows you to connect a printer using a centronics-db29 cable.
More info about Parallel IO / Printer Interface.
Schematics and BOM: Repository on github
More info about Parallel IO / Printer Interface.
Schematics and BOM: Repository on github
Settings
Default Port: 68hSW1 Address | ||
---|---|---|
pin1 | 80h | |
pin2 | 40h | |
pin3 | 20h | |
pin4 | 10h | |
pin5 | 08h | |
pin6 | 04h |
P2 PIO Header DIL | ||
---|---|---|
pin1 | VCC | GND |
pin2 | PA0 | GND |
pin3 | PA1 | /BSTB |
pin4 | PA2 | /BRDY |
pin5 | PA3 | PB7 |
pin6 | PA4 | PB6 |
pin7 | PA5 | PB5 |
pin8 | PA6 | PB4 |
pin9 | PA7 | PB3 |
pin10 | ARDY | PB2 |
pin11 | /ASTB | PB1 |
pin12 | GND | PB0 |
pin13 | GND | VCC |
P4 Intern | ||
---|---|---|
pin1 | IEI | |
pin2 | IEO |
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