CZ6502 SBC6502 VIA 8255

This card can be used with either the CZ6502 computer or the SBC6502-32k SBC or the later versions of SBC6809. It is designed to plug into a backplane (CZ6502 backplane) or can be used as the only expansion card directly plugged into the 40-pin connector on the SBC. If offers full access to the 8255 PIA chip.

You can program up to 24 i/o lines as input or output. All i/o have an on board LED each port group can have the LED's on or off. Two connectors are provided one 20-way IDC type and one 'traditional' style 16pin header.

It has a selectable I/O address space, 9200H, 9400H or 9600H so you could have up to 3 cards in the system (if using a backplane).

See 82c55 datasheet for programming details.