This program write alternate two low frequency or three high frequency tones to the tape recorder.
Record this for a couple of minutes.
When reading this tape the PLL should convert this to a symmetric block pulse.
This program shows on the first two digits on the KIM-1 LED display the number of ‘1’s read, on the second two digits the number of ‘0’s read.
When all is well this should 80/80 but anything between 60/A0 and A0/60 is fine.
See also:
KIM-1 revisions, what changed?
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What changed between ...
KIM-1 Circuit poster
With every KIM-1 came a large poster with the Circuit Diagram. The circuit stayed the same from 1975 to 1977, but there ...
A 2K Symbolic Assembler for the KIM-1
A 2K Symbolic Assembler, by Robert Ford Denison. An assembler and editor in 2K!
This small program allows to assemble...
The Rockwell KIM-1
Once in a while I hear a myth on the internet about Rockwell manufactured the KIM-1. That myth needs to be debunked.
...