Category: Assemblers
Downloads: 25
d64 floppy0 6510+ Assembler HOT

1988 By Dave Weaver. Nice thing about this assembler is that it walks you through creating a program environment on a work disk.

6510 assembler
2015-04-08 English Commodore 64 14.49 KB 2,328 Download
d64 floppy1 AS2 HOT

AS2 is a multi-pass assembler for the Commodore 64. This particular assembler works ONLY with a 1541 or MSD-2 drive. Full docs are on the disk.

2015-04-08 English Commodore 64 15.45 KB 1,246 Download
d64 floppy2 Assblaster v3.2 HOT

Assblaster v3.2 by Cascade is a feature rich Assembler for the Commodore 64 with built-in editor.

assblaster v3.2 1
2015-06-04 English Commodore 64 15.21 KB 1,268 Download
d64 floppy3 Assblaster v3.3 HOT

Assblaster v3.3 by Cascade is a feature rich Assembler for the Commodore 64 with built-in editor.

assblaster v3.3 1
2015-06-04 English Commodore 64 14.33 KB 1,610 Download
zip4 Assembler-Basic v3.0 HOT

Assember-Basic v3.0 released by USPS.  Assem-Basic is a symbolic label-based assembler ths is more than just an assembler, it's a BASIC extension that adds commands to BASIC.  Docs and sample code are on the disk.

assem-basic v3.0-1
2017-08-26 English Commodore 64 41.08 KB 1,396 Download
d64 floppy5 CBM Assembler 64 HOT

CBM Assembler 64 v080282 has to be one of the earliest made assembler packages for the Commodore 64.  Docs for using the assembler are on the disk in a sequential file.

cbm assembler 1
2015-04-26 English Commodore 64 27.98 KB 1,754 Download
zip6 Commodore 64 Macro Assembler Development System HOT

Published in 1982 by Commodore, the C64 Macro Assembler Development System is a very powerful macro Assembler, editor, loaders and two machine language monitors along with other support routines.

Thanks go to BlueCursor for providing the software and manual.

Also of interest to some might be this link to the complete package on GitHub along with an additional dis-assembler, manual addendum and source.

2020-06-02 English Commodore 64 15.72 KB 2,598 Download
zip7 Commodore Assembler Tutor HOT

Commodore 64 Assembler Tutor - Two disk (.g64) image set created from originals and shared with us by Tomse over at  

2020-12-03 English Commodore 64 9.97 MB 1,178 Download
zip8 Fassem by Merlin HOT

Fassem by Merlin (1984) is an extremely interesting and hard to find assembler / disassembler for the Commodore 64.  I spent hours just trying to find mention of this package and all I came across is two references.  One was from the magazine Commodore User Issue 16 (small sales ad) and a for sale listing at  This package is pretty unique because it lets you program in a type of BASIC syntax.  Check out the manual for all the details.

Big thanks go to BlueCursor for sourcing this truely rare program and manual.

2020-06-02 English Commodore 64 2.28 MB 1,077 Download
d64 floppy9 Fast Assembler v3 HOT

I can't tell you much if anything about this assembler.  It's a small 11 block program and when run comes up with the screen you can see in the screenshot.  

2016-12-23 English Commodore 64 3.28 KB 1,115 Download
d64 floppy10 IEA Assembler HOT

IEA - Instant Editor Assembler for the Commodore 64.    

2015-03-18 English Commodore 64 30.56 KB 1,015 Download
d64 floppy11 IEA Assembler Rev2 Rev2 HOT

IEA - Instant Editor Assembler Rev2 Patch Robin's Software 1984

Mark Robin 2015-03-18 English Commodore 64 21.32 KB 991 Download
zip12 Laser Genius Assembler HOT

Laser Genius is a complete machine code development system for the Commodore 64.  You can find the manual here.

2020-05-31 English Commodore 64 41.66 KB 1,130 Download
zip13 Macrofire Editor / Assembler v2.1

Macrofire v2.1 Assembler / Editor (1983) by H.C. Wagner with illegal opcodes added by T.S.D. - Probably not something people would use these days for development, but interesting to check out.

2021-04-03 English Commodore 64 9.28 KB 630 Download
zip14 Mastercode Assembler

Mastercode Assembler by Sunshine (1983) for the Commodore 64 is ideal for those with little knowledge of machine code since its clear presentation makes the variety of tasks associated with entering machine code programs more simple to comprehend.

Here's a link to the manual.

2020-10-28 English Commodore 64 41.4 KB 854 Download
d64 floppy15 Merlin 64 HOT

Merlin 64 by Glen Bredon is a Macro Assembler for the Commodore 64.

2015-04-08 English Commodore 64 44.04 KB 2,350 Download
d64 floppy16 Moses 64 v2.0 HOT

Programmed by Glen Graham - Moses64 is a multi-pass assembler that uses the built in screen editor to enter your code. Full docs are on the disk with some added background information that is kinda interesting.

moses64 v2.0
2015-04-08 English Commodore 64 7.06 KB 1,147 Download
d64 floppy17 PET PAL Assembler HOT

I couldn't find much info on this program, but it is an assembler for the Commodore PET.  

pet pal assembler-1
2015-10-03 English PET 4.69 KB 1,107 Download
zip18 Pulse Assembler

Pulse Assembler, A.K.A The Pulse, A.K.A Assembler64 MK2 by Interceptor (Original by Ian Gray - Extended by Lee Braine) is nothing fancy, but I'm sure someone might find it interesting.  I found a doc file for it, so thought I'd post it.

2021-04-06 English Commodore 64 17.43 KB 635 Download
d64 floppy19 Simple Assembler HOT

Simple Assembler is just that, a small assembler program that lets you program in basic assembler type language.  Check out screenshot to get a better idea.

2016-12-23 English Commodore 64 3.68 KB 1,137 Download
zip20 Speedy Assembler

SPEEDY ASSEMBLER is a comprehensive machine code development package, which is suitable for both the beginner in machine coding and the  experienced programmer, who wants to write large, complicated machine-code programs.

Firstly, SPEEDY ASSEMBLER caters for people who want to write machine code subroutines, possibly to be run in conjunction with BASIC.

Secondly, SPEEDY ASSEMBLER puts special emphasis on catering for the experienced machine code programmer who wants to design large and complicated multi-file programs.

2021-08-16 English Commodore 64 19.83 KB 611 Download
zip21 The Fast Assembler V3 HOT

First debuted in Compute!'s Gazette Issue 31, Here's a truly amazing machine language assembler for the 64 and 128 (in 64 mode). "Fast Assembler" supports multiple statement lines, labels, and macro-like "include" files. It can assemble to memory or to disk. Written very compactly, it occupies only about 2600 bytes, leaving the rest of memory for your source code. It also adds to the BASIC editor several new features useful to both BASIC and machine language programmers.

Thanks go to BlueCursor for this contribution.

2020-06-01 English Commodore 64 2.7 MB 1,155 Download
d64 floppy22 The Machine Shop v1.3 HOT

The Machine Shop 1.3 by Don French and John Shifflett is an assembler for the Commodore 64 that evolved from "The Assembler" for the VIC-20.  Full instructions and walk through are on the disk.

A review of "The Machine Shop" can be found in Ahoy! magazine issue 23 on page 86.

the machine shop v1.3
2015-04-08 English Commodore 64 77.41 KB 1,156 Download
d64 floppy23 Turbo Assembler v3 HOT

This version of Turbo Assembler was improved by TFS of the Supersonics. Several new features were added which you can read about on the screenshot.

turbo assembler v3
2015-04-08 English Commodore 64 14.66 KB 1,352 Download
zip24 Turbo Assembler v6.0 HOT
Turbo Assembler v6.0 for the Commodore 64 - Includes full docs in txt format from Project 64 inside archive. Check out cheat sheet in long description. turbo-assembler-v6.0-1
2019-07-26 English Commodore 64 11.81 KB 2,100 Download
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