Command-line cross-compiler of assembly language for Z80 CPU.

449 stars 68 forks 449 watchers Assembly BSD 3-Clause "New" or "Revised" License
8080 asm assembly-language gbz80 lr35902 spectrum-next z80 z80-assembler z80asm z80n-assembler
13 Open Issues Need Help Last updated: Jul 19, 2026

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enhancement help wanted

Command-line cross-compiler of assembly language for Z80 CPU.

Assembly
#8080#asm#assembly-language#gbz80#lr35902#spectrum-next#z80#z80-assembler#z80asm#z80n-assembler
enhancement help wanted

Command-line cross-compiler of assembly language for Z80 CPU.

Assembly
#8080#asm#assembly-language#gbz80#lr35902#spectrum-next#z80#z80-assembler#z80asm#z80n-assembler

Command-line cross-compiler of assembly language for Z80 CPU.

Assembly
#8080#asm#assembly-language#gbz80#lr35902#spectrum-next#z80#z80-assembler#z80asm#z80n-assembler
enhancement help wanted docs

Command-line cross-compiler of assembly language for Z80 CPU.

Assembly
#8080#asm#assembly-language#gbz80#lr35902#spectrum-next#z80#z80-assembler#z80asm#z80n-assembler
enhancement help wanted docs RFC

Command-line cross-compiler of assembly language for Z80 CPU.

Assembly
#8080#asm#assembly-language#gbz80#lr35902#spectrum-next#z80#z80-assembler#z80asm#z80n-assembler

Command-line cross-compiler of assembly language for Z80 CPU.

Assembly
#8080#asm#assembly-language#gbz80#lr35902#spectrum-next#z80#z80-assembler#z80asm#z80n-assembler
enhancement help wanted automatic tests

Command-line cross-compiler of assembly language for Z80 CPU.

Assembly
#8080#asm#assembly-language#gbz80#lr35902#spectrum-next#z80#z80-assembler#z80asm#z80n-assembler
bug help wanted automatic tests RFC

Command-line cross-compiler of assembly language for Z80 CPU.

Assembly
#8080#asm#assembly-language#gbz80#lr35902#spectrum-next#z80#z80-assembler#z80asm#z80n-assembler

Command-line cross-compiler of assembly language for Z80 CPU.

Assembly
#8080#asm#assembly-language#gbz80#lr35902#spectrum-next#z80#z80-assembler#z80asm#z80n-assembler
enhancement help wanted automatic tests

Command-line cross-compiler of assembly language for Z80 CPU.

Assembly
#8080#asm#assembly-language#gbz80#lr35902#spectrum-next#z80#z80-assembler#z80asm#z80n-assembler

Command-line cross-compiler of assembly language for Z80 CPU.

Assembly
#8080#asm#assembly-language#gbz80#lr35902#spectrum-next#z80#z80-assembler#z80asm#z80n-assembler
enhancement help wanted

Command-line cross-compiler of assembly language for Z80 CPU.

Assembly
#8080#asm#assembly-language#gbz80#lr35902#spectrum-next#z80#z80-assembler#z80asm#z80n-assembler

AI Summary: The ZXSPECTRUM128 device emulation incorrectly initializes system variables (sysvars) in the 0x5Bxx memory range, leaving them zeroed instead of reflecting 128K-specific values. This is problematic for sysvars like `BANK` at 0x5B5C, which should indicate the active ROM. The issue calls for correctly implementing these 128K sysvars to ensure proper emulation behavior, noting that comprehensive documentation is hard to find.

Complexity: 3/5
bug help wanted

Command-line cross-compiler of assembly language for Z80 CPU.

Assembly
#8080#asm#assembly-language#gbz80#lr35902#spectrum-next#z80#z80-assembler#z80asm#z80n-assembler