- Z180 CPU,
- 1 MB of static RAM,
- 16 KB bootloader ROM,
- Floppy disk drive,
- 16 bit GPIO user port,
- 2 UARTs: USB-C and RS232,
- AY-3-8912 sound,
- 80x60 B&W text mode VGA output,
- custom Cherry-MX mechanical keyboard,
- USB-C powered.
ZAKOS code repository is located here.
| Start | End | Description |
|---|---|---|
| 0x00000 | 0x03FFF | ROM, disabled after boot, after that RAM |
| 0x04000 | 0xFDFFF | RAM |
| 0xFE000 | 0xFFFFF | Memory mapped I/O, VGA VRAM |
8-bit I/O is used.
| Start | End | Description |
|---|---|---|
| 0x00 | 0x3F | Z180 internal I/O |
| 0x40 | 0x5F | VBLANK IRQ acknowledge |
| 0x60 | 0x7F | ROM disable control |
| 0x80 | 0x9F | Keyboard |
| 0xA0 | 0xBF | Z80 PIO (user port) |
| 0xC0 | 0xDF | AY-3-8912 |
| 0xE0 | 0xFF | 82077 floppy controller |
Collection of useful datasheets, might be removed in the future.
Subrepository that contains a hardware project of a mechanical keyboard for the computer.
KiCAD project of the computer's PCB.
HDL of the VGA timing generator implemented in a XC9536 CPLD, tool to generate font ROM.
Schematic of the computer in a friendly .pdf form.
3D models designed for FDM priting.