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Welcome to the zasm download page

zasm is a command-line assembler for the Zilog Z80 cpu. it is available as source, which should compile on many unix-style operating systems, and as pre-compiled binary. Choose a version from the list below. Archive names indicate version, date and build host. Select a binary which matches your OS best. If it fails to run then use the source.

Quick links: Documentation, zasm online assembler, Git repository.


zasm is a 8080, Z80 and Z180 assembler.

zasm accepts source code using 8080 and Z80 syntax and can convert 8080 syntax to Z80.
zasm supports various historically used syntax variants and the syntax emitted by sdcc.

zasm can generate binary files or Intel Hex or Motorola S19 files.
zasm can generate various specialized files for Sinclair and Jupiter Ace, e.g. snapshot files and .tap and .tzx tape files.
zasm can include the generated code and accumulated cpu cycles in the list output file.
zasm has a built-in testcode runner to run automated tests after assembling your source.

zasm supports

Name Letzte Änderung Länge 
old versions/ 2021-02-27 11:57 109 
sdcc for zasm (headers and lib).zip 2016-05-09 15:59 868994 
sdcc for zasm Linux.zip 2016-05-09 15:58 2197835 
sdcc for zasm OSX.zip 2016-05-09 15:57 1678403 
zasm-4.0.16-FreeBSD64.zip 2016-05-01 12:01 200493 
zasm-4.0.20-Linux32.zip 2017-03-05 16:31 187229 
zasm-4.4.1-RasPi-Linux32-ARMv7.zip 2020-10-19 21:26 194940 
zasm-4.4.5-macos10.12.zip 2020-11-13 11:52 228926 
zasm-4.4.7-Linux64.zip 2021-02-02 18:38 217707 
zasm-4.4.7-macos10.12.zip 2021-02-02 19:29 229782 
zasm-4.4.8-Linux64.zip 2021-02-27 11:55 217794 
zasm-4.4.8-Raspios-buster-armhf.zip 2021-02-27 11:56 205995 
zasm-4.4.9-Linux64.zip 2022-01-20 14:21 217483 
github - z88dk - math 157 
www.z88dk.org - forum 131 
Z80 Number Cruncher 118 
Z80.info 91 
zasm TextMate Bundle 120 
zx7 at WoS forum 150 

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