main
main
memio
memio
Complete Stack
Complete Stack
Lower Board
Lower Board
Lower Board Labeled
Lower Board Labeled
Test Setup
Test Setup
Upper Board
Upper Board
Upper Board Labeled
Upper Board Labeled
Frontpanel
Frontpanel
Front panel connectors for I/O and power. The slot under the RS232 socket is for an SD card.
Zilog inside
Zilog inside
My new 10MHz genuine Zilog Z80 processor.
Front panel board
Front panel board
Back view of the front panel with the power regulators for 3.3 and 5V at the right.
UI Board
UI Board
The user interface (keyboard right, GPU left) and interrupt controller (middle).
UI Board detached
UI Board detached
The UI board detached from the system (so you can see the chips better).
MMU installed
MMU installed
The new MMU with 1MB of RAM. This lives underneath the UI board.
MMU
MMU
The memory management unit with 1MB of RAM installed. Top left connector is power, top right is address + control and bottom right is data which daisy-chains up to the UI board when installed.
Ratsnest
Ratsnest
The insides of the computer, 5 boards (not counting the mods!) and a lot of wire.