Correct KIM-1 source of the monitor

[Hans Otten]

Many sources of the KIM-1 monitor are floating around. All typed in from the user manual, most are not identical to the original text. None deliver the real KIM-1 ROMs, they fail with filling unused bytes with 00. And the text and comments are incomplete, wrong or made up.

So in June 2026 I have typed in the source of the KIM-1 monitor as it is listed in the User manual. Every line has the same line number, all text including comments is as in the paper listing. The listing is also paged as the original. Converted to a modern MOS Technology assembler format (I used TAS32), that delivers the exact ROM binary (including those 00 filler bytes!) as dumped from the real 6530-002 and -003 by me.

The resulting 2K binary is ready for the PAL-1 and PAL-2. No new functionality, just the correct KIM-1 ROM.

Correct KIM-1 monitor source – Retro Computing

[GN Liu]

Thanks Hans for sharing the latest article!