Tool
Z80 Emulator
A Zilog Z80 computer that runs in your browser, written in Rust and compiled to WebAssembly. Write assembly, assemble it into memory, then step or run it at any clock speed while you watch the registers, memory, disassembly, and a 192×128 memory-mapped display.
Display
192×128 pixels at 0x4000–0x9FFF, one byte each: RRRGGGBB.
Assembler
Registers
CPU halted
Disassembly
| Breakpoint | Addr | Instruction | Bytes |
|---|---|---|---|
| 0000 | NOP | 00 | |
| 0001 | NOP | 00 | |
| 0002 | NOP | 00 | |
| 0003 | NOP | 00 | |
| 0004 | NOP | 00 | |
| 0005 | NOP | 00 | |
| 0006 | NOP | 00 | |
| 0007 | NOP | 00 | |
| 0008 | NOP | 00 | |
| 0009 | NOP | 00 | |
| 000A | NOP | 00 | |
| 000B | NOP | 00 | |
| 000C | NOP | 00 | |
| 000D | NOP | 00 | |
| 000E | NOP | 00 | |
| 000F | NOP | 00 | |
| 0010 | NOP | 00 | |
| 0011 | NOP | 00 | |
| 0012 | NOP | 00 | |
| 0013 | NOP | 00 | |
| 0014 | NOP | 00 | |
| 0015 | NOP | 00 | |
| 0016 | NOP | 00 | |
| 0017 | NOP | 00 |
Memory
| 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | A | B | C | D | E | F | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0000 | ||||||||||||||||
| 0010 | ||||||||||||||||
| 0020 | ||||||||||||||||
| 0030 | ||||||||||||||||
| 0040 | ||||||||||||||||
| 0050 | ||||||||||||||||
| 0060 | ||||||||||||||||
| 0070 | ||||||||||||||||
| 0080 | ||||||||||||||||
| 0090 | ||||||||||||||||
| 00A0 | ||||||||||||||||
| 00B0 | ||||||||||||||||
| 00C0 | ||||||||||||||||
| 00D0 | ||||||||||||||||
| 00E0 | ||||||||||||||||
| 00F0 |
PCSPchangeddisplay (0x4000–0x9FFF)