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Revising historical background with some newly found info

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J.B. Langston
2017-02-07 21:14:06 -05:00
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README.md
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# Supermon+64 V1.2
By Jim Butterfield
By Jim Butterfield et. al.
## Overview
Supermon64 is a machine-language monitor for the Commodore 64 written by
[Jim Butterfield](https://en.wikipedia.org/wiki/Jim_Butterfield).
The first version for the Commodore 64 originally appeared as a type-in program in the
[January 1983 issue of Compute Magazine](https://archive.org/details/1983-01-compute-magazine).
It was based on an earlier version of Supermon for the PET and VIC-20. An improved version
followed in 1985, updated to include the features in the built-in monitors for the
Commodore Plus/4 and 128. This is the version that is preserved here.
Supermon64 is a machine-language monitor for the Commodore 64. It allows you to
inspect and alter memory locations as well as assemble and disassemble machine code.
Supermon 64 was widely distributed by Commodore User's Groups and included on the
[demo diskettes](http://www.zimmers.net/anonftp/pub/cbm/demodisks/c64/starter-kit.d64.gz)
and tapes that Commodore provided with their hardware. It was also included as a type-in
program in the back of many books on machine language programming, including Rae West's
[Programming the Commodore 64: The Definitive Guide](https://archive.org/download/Compute_s_Programming_the_Commodore_64_The_Definitive_Guide/Compute_s_Programming_the_Commodore_64_The_Definitive_Guide.pdf)
and Jim Butterfield's own
[Machine Language for the Commodore 64](https://archive.org/details/Machine_Language_for_the_Commodore_Revised_and_Expanded_Edition).
Here is a video with a quick demo: https://www.youtube.com/watch?v=MEjnMt_3wkU
Here is a 10-minute video demonstrating many of its features: https://www.youtube.com/watch?v=MEjnMt_3wkU
## Contents
@@ -42,7 +28,35 @@ Modernized sources:
## Background
After working my way through Jim Butterfield's excellent book using his equally excellent monitor,
Supermon is closely associated with [Jim Butterfield](https://en.wikipedia.org/wiki/Jim_Butterfield)
but it had many contributors over the years. The original version of Supermon for the Commodore PET
contained the following credits:
>Dissassembler by Wozniak/Baum
Single step by Jim Russo
Most other stuff (,HAFT) By Bill Seiler
Tidied & Wrapped by Jim Butterfield
The version for the PET appeared in the
[December 1981 issue of Compute Magazine](https://archive.org/details/1981-12-compute-magazine).
From there, it made its way to the VIC and the Commodore 64. It apparently shares its DNA with
the monitor and mini assembler programs on the Apple II, as well as Micromon on various Commodore
computers.
The first version for the Commodore 64 appeared as a type-in program in the
[January 1983 issue of Compute Magazine](https://archive.org/details/1983-01-compute-magazine).
An improved version followed in 1985, updated to include the features in the built-in monitors
for the Commodore Plus/4 and 128. This is the version that is preserved here.
Supermon 64 was widely distributed by Commodore User's Groups and included on the
[demo diskettes](http://www.zimmers.net/anonftp/pub/cbm/demodisks/c64/starter-kit.d64.gz)
and tapes that Commodore provided with their hardware. It was also included as a type-in
program in the back of many books on machine language programming, including Rae West's
[Programming the Commodore 64: The Definitive Guide](https://archive.org/download/Compute_s_Programming_the_Commodore_64_The_Definitive_Guide/Compute_s_Programming_the_Commodore_64_The_Definitive_Guide.pdf)
and Jim Butterfield's own
[Machine Language for the Commodore 64](https://archive.org/details/Machine_Language_for_the_Commodore_Revised_and_Expanded_Edition).
After working my way through Jim Butterfield's excellent book using Supermon64,
I wanted to find some real assembly code to study, and the software I had just been using seemed
like a natural place to start. I started looking for the sources online but for a piece of
public domain software, it wasn't as easy as to find as you'd think.