reZet80 PIONEER

reZet80 PIONEER R1:

• PIONEER R1 Update

• Haunted House - first PIONEER game

• 8279 PKDI

Displaying "01 KiB RAM R1"

reZet80 PIONEER R0:
The reZet80 PIONEER is an expandable modular stand-alone computer system that could have been built in the late 70s.

System description:

• reZet80 PIONEER - 70s computing

Software:

• reZet80 PIONEER debug Monitor

CPU card:

• reZet80 CPU card R2

CPU bus:

• reZet80 CPU bus specs R2

Memory:

• memory map and address decoding

• memory timing

• 4 KiB ROM 2 KiB RAM card

• 10 KiB ROM card

• 1 KiB RAM card using 2125 chips

I/O:

• I/O map and decoding

Display:

• 6-digit TIL311 display

• 6-digit 7-segment display

Keypad:

• 20-key keypad with 74C923 key encoder

• alternative 20-key keypad

Images of the current prototype running on the reZet80 HWDK with both available displays connected, 2 KiB RAM installed, RAM start address: 3800