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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

Flags (F)

CPU halted

Disassembly

BreakpointAddrInstructionBytes
0000NOP00
0001NOP00
0002NOP00
0003NOP00
0004NOP00
0005NOP00
0006NOP00
0007NOP00
0008NOP00
0009NOP00
000ANOP00
000BNOP00
000CNOP00
000DNOP00
000ENOP00
000FNOP00
0010NOP00
0011NOP00
0012NOP00
0013NOP00
0014NOP00
0015NOP00
0016NOP00
0017NOP00

Memory

0123456789ABCDEF
0000
0010
0020
0030
0040
0050
0060
0070
0080
0090
00A0
00B0
00C0
00D0
00E0
00F0

PCSPchangeddisplay (0x4000–0x9FFF)

Ready.

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