January 17, 2026, 11:19am 1
Not a very popular subject I am sure… I usually manage to muddle through without an assember to write some small programs but the Z8001 seems to be the exception! I’ve just built a small Z8001 SBC and managed to check it’s functioning by using a few lines from a program I found online, but am drawing a blank with more coding. With no assembler, I’ve been trying to work out the op codes from the programming manuals etc. of which I have downloaded at least six. However, unllike all other processors I’ve used in the past, decoding the instructions into the op codes is defying me! (I managed it with the 68000 with no worries) but this Z8000 is like double Dutch to me. Maybe someone else has tried this OR does anyone know of an assembler that will handle the…
January 17, 2026, 11:19am 1
Not a very popular subject I am sure… I usually manage to muddle through without an assember to write some small programs but the Z8001 seems to be the exception! I’ve just built a small Z8001 SBC and managed to check it’s functioning by using a few lines from a program I found online, but am drawing a blank with more coding. With no assembler, I’ve been trying to work out the op codes from the programming manuals etc. of which I have downloaded at least six. However, unllike all other processors I’ve used in the past, decoding the instructions into the op codes is defying me! (I managed it with the 68000 with no worries) but this Z8000 is like double Dutch to me. Maybe someone else has tried this OR does anyone know of an assembler that will handle the Z8000 devices? I did manage to find an old DOS assembler, but when loading it up on an old XP computer, it didn’t work 
Can anyone help please??
I seem to remember there being one in the giant dump of stuff from Coherent Unix.
There is also support at some historic level in the Amsterdam Compiler Kit, and in GNU binutils (linker and assembler). Newlib supports Z8000, and even GDB can sim and debug Z8000 code.
1 Like
Bill January 17, 2026, 5:26pm 3
Run it in DOSBox? __
I shall have to have a look for those links - thanks.