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:
Proton PC-1
The Proton PC-1 is a 6502 based computer in a keyboard case. Produced by the Dutch electronics firm Post Electronics, la...
MTU and Eduardo Casino
Since 2023, after replicating a working KIM-1 Rev D PCB, Eduardo has been replicating and enhancing MTU products.
See...
MTU K-1000 power unit
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K-1013 floppy controller
Used in the early KIM-1 MTU bus system and in the MTU-130/140 systems.
16K RAM
Bootstrap ROM 256 bytes
Double ...