Is SUBLEQ the Right Choice for a VM?
SUBLEQ is an interesting architecture because of its simplicity, adaptability and power. It is therefore an attractive choice for a simple virtual machine. However, this comes at a cost which we will...
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XCCP: A Shell Extension for CP/M
XCCP describes itself as an Extended Console Command Processor for CP/M. It supports the 8080 and v1.0 was released by Anton R. Fleig in 1984. Like EPEX, XCCP doesn't require installing so we can begi...
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EPEX: An Environment Extension for CP/M
Epex is an evironment extension for CP/M. It stands for Environmental Processing EXecutive, and v1.1 was released by James H. Whorton in 1986. It can make using CP/M much more comfortable at the cost...
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File Comparison Utilities on CP/M
There are many utilities available for CP/M to compare the differences between files and to distribute those differences. All the utilities in this article can be found on the Walnut Creek CD.
Binary ...
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80 Columns in Software on the Commodore VIC-20
If you have good eyesight, a well-tuned display and patience it is possible to use 80 columns in software on the VIC-20. This is really just an experiment but considering the limitations of the Vic I ...
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