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Saving and Loading Memory on the VIC-20

Saving and loading memory is quite easy on the VIC-20 once you know how. However, it isn't obvious how to do this and therefore this article will present a few simple ways of doing it from BASIC and A...   Read More

Advanced Use of .LBR files on CP/M

Lots of utilities make use of .LBR (Library) files to provide extra facilities such as the ability to run commands from archives or mount them as if they were drives. This article shows some more adva...   Read More

Working with .LBR files on CP/M

The .LBR (Library) file format was the most common form of multi-file archive on personal computers at one time. It was created by Gary P. Novosielski in 1982 for use by his LU (Library Utility) progr...   Read More

Basic Line Storage on the VIC-20

BASIC programs are stored in memory using a simple structure that we can investigate and manipulate. This article will show how they are stored and contains a BASIC program to go through each line of ...   Read More

Programming in Assembly with VICMON on the VIC-20

VICMON is a machine language monitor released by Commodore in 1982 and is great for programming the VIC-20. Its interactive nature means that it can often be quicker to develop via this rather than us...   Read More

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