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Re: Which assembler could I possibly use ?
Posted: Sun May 25, 2025 12:33 am
by BigDumbDinosaur
I just happened to notice that the Kowalski package is not in that list.
Re: Which assembler could I possibly use ?
Posted: Sun May 25, 2025 7:17 am
by BigEd
Kowalski is next door, on
this page. I see it's a dead link though, so I might update it to
Daryl's page. (Edit: done)
Re: Which assembler could I possibly use ?
Posted: Sun May 25, 2025 6:09 pm
by 6502inside
There was one similar to that in COMPUTE!'s Gazette called BASSEM that also took assembly source as a BASIC program.
Re: Which assembler could I possibly use ?
Posted: Sun May 25, 2025 6:43 pm
by barrym95838
There was one similar to that in COMPUTE!'s Gazette called BASSEM that also took assembly source as a BASIC program.
Yes. I have a COMPUTE! book with detailed descriptions and source for the LADS assembler. It assembles to RAM or floppy, and provides versions for Apple ][, C=64 and 8-bit Atari. It is written in 6502 assembly, but the Apple ][ and C=64 versions accept source as a BASIC program. The Atari version needed its own editor, and the Apple ][ version needed a CHRGET wedge to prevent tokenization, but the C=64 version happily gobbled up the assembly source straight from BASIC, tokens and all, IIRC.
Re: Which assembler could I possibly use ?
Posted: Sun May 25, 2025 9:04 pm
by BigDumbDinosaur
Kowalski is next door, on
this page. I see it's a dead link though, so I might update it to
Daryl's page. (Edit: done)
I mentioned it not being on the assembler page because the Kowalski package has a full-featured assembler and could be used solely for building code if the programmer isn’t interested in simulation. Also, the assemblers page is a list of assemblers and IDEs, IDE describing Kowalski. For that reason, I’d think it would warrant a link on the assemblers page.
Re: Which assembler could I possibly use ?
Posted: Sun May 25, 2025 9:07 pm
by BigEd
Yes, maybe so, but I don't feel I could make that change - one for Mike.
Re: Which assembler could I possibly use ?
Posted: Thu Jun 12, 2025 5:14 pm
by migry
Seems like a live thread.
I am wanting to re-assemble the disassembly listing of the Acorn Atom OS ROM (modified to move the start of the video memory, where the address is hard coded).
I am running (and modifying) the Atomulator emulator in a Linux environment. I am modifying the memory map to maximise memory RAM for BASIC source code.
I was looking to find a 6502 assembler with C source code that I could compile under Linux (gcc) to assemble the disassembly. I am happy to modify the disassembly to change directives to any needed format.
I tried as6502 by "Jos Visser" (from GitHub). Source code compiles with some trivial issues to fix. It is a two pass assembler. Gives an error on "pass 1" but no indication of where the error is in the source code, doesn't print the line of source or the line number. I have added a bug request to GitHub, but no idea if the author is still around.
I tried gaia by "andi-spajk". Sources compile with no issues. Appears to be a bug that "lda ABS,Y" generates an error. Does not support maths. Does not support db/.byte and other commonly used directives.
Briefly looked at Macroassembler-AS, but I had no idea how to use Git to download the sources.
I am happy to try suggestions of other assembler. Ideally should have C source code for compilation under Linux (to generate runnable binaries).
Some example code(math needed) and directives...
Code: Select all
lda LF8BE+1, x ; Get LSB address from command table
bvc LF9A2+1 ; ..<CTRL> key was pressed - execute BRK
L0052 := $0052
.org $f000
LF000: .byte "PLOT", >plot, <plot
.byte $1C, $8A, $1C, $23, $5D, $8B, $1B, $A1
.word $A000 ;
.byte "OUT OF RANGE:", 10, 13
Re: Which assembler could I possibly use ?
Posted: Thu Jun 12, 2025 5:51 pm
by gilhad
I downloaded Macroassembler-AS from the page (
http://john.ccac.rwth-aachen.de:8000/as/) that
csj linked
I
very highly recommend the
Macroassembler AS, also known as "ASL." It runs on both Unix (including Linux and MacOS) and Windows, is one of the more powerful assemblers out there, and is probably first in the world in terms of the number of CPUs it supports. It's also under active development.
There is text
So let's go directly to the things available in this area:
Things that can be downloaded
so i clicked it and in section
C Sources
Here are the C sources, the sources all current and future developments will be made on. Message files for german and english are both included, so there is no separate archive:
latest build - please use this version if possible -as bz2
I downloaded it
http://john.ccac.rwth-aachen.de:8000/ft ... ent.tar.gz
I compiled it under Gentoo Linux and it looks working ... no extra problem with compilation, but I am curently working on something else, so I did not used it, I just did run the tests successfully ..
Re: Which assembler could I possibly use ?
Posted: Thu Jun 12, 2025 6:17 pm
by drogon
I was looking to find a 6502 assembler with C source code that I could compile under Linux (gcc) to assemble the disassembly. I am happy to modify the disassembly to change directives to any needed format.
ca65 from the cc65 suite works well under Linux - there may even be a standard package for it in your chosen distribution too.
I use it for all my 65xx work.
-Gordon
Re: Which assembler could I possibly use ?
Posted: Fri Jun 13, 2025 4:16 am
by BigDumbDinosaur
There is also André Fachat’s xa65 crossassembler, which may be built and run Linux (I’ve done so on SuSE Enterprise Linux).
Re: Which assembler could I possibly use ?
Posted: Fri Jun 13, 2025 5:36 am
by soci
Not too surprisingly I use this one:
https://tass64.sourceforge.net/
If the latest version isn't packaged yet it's easy to compile it.
Re: Which assembler could I possibly use ?
Posted: Fri Jun 13, 2025 7:48 am
by hoglet
Seems like a live thread.
I am wanting to re-assemble the disassembly listing of the Acorn Atom OS ROM (modified to move the start of the video memory, where the address is hard coded).
In case it's of any use to you, here's a copy of the Acorn Atom OS that can be re-assembled using ca65.
This disassembly was published by forum member Arlet back in 2013:
Disassembled Acorn Atom OS ROM
His original link is dead, but the content was available on archive.org.
I believe this work derives from the original "Splitting The Atom" disassembly:
https://site.acornatom.nl/atom_handleid ... /spa26.htm
(this site is quite slow at the moment, but is normally accessible)
Splitting the Atom - A manual for Informed Users
- Author(s): J. R. Stevenson and J. C. Rockett
- ISBN: NONE
- Publisher: Procyon
Edit: FYI, I've just uploaded a copy of Splitting the Atom to archive.org:
https://archive.org/details/splitting-the-atom
Dave
Re: Which assembler could I possibly use ?
Posted: Fri Jun 13, 2025 3:59 pm
by fachat
There is also André Fachat’s xa65 crossassembler, which may be built and run Linux (I’ve done so on SuSE Enterprise Linux).
Not only that. It's actually included in some Linux distributions.
The current maintainer is Cameron Kaiser.
André
Re: Which assembler could I possibly use ?
Posted: Sat Jun 14, 2025 2:12 am
by BigDumbDinosaur
There is also André Fachat’s xa65 crossassembler, which may be built and run Linux (I’ve done so on SuSE Enterprise Linux).
Not only that. It's actually included in some Linux distributions.
Which distributions include it?
The current maintainer is Cameron Kaiser.
Yep! I think that might make you even more notorious...er...famous.
BTW, the only aspect of xa65 that I don’t care for is the necessity of using the .as, .al, .xs, and .xl pseudo-ops to tell the assembler how to assemble immediate-mode operands for the 65C816.
Re: Which assembler could I possibly use ?
Posted: Sat Jun 14, 2025 4:03 am
by gilhad
Which distributions include it?
For example Gentoo Linux :
dev-embedded/xa: High-speed, two-pass portable 6502 cross-assembler