MOS Technology 6502, 9 DIGIT BASIC by Microsoft, Copyright 1977. often nicknamed KB9, is an early version of Microsoft Basic adapted for the KIM-1. With 9 digit precision and the Microsoft version of Basic a very usable high-level language for a KIM-1 with 16K extra RAM and a videoterminal or teletype.
I bought my version in 1979, serial number 2167. Tape ID #01, 2000-4260. Start 4067.
It is a version that works around the missing ROR instruction on early 6502 CPU’s.
All versions of KB9 on the internet are from the cassette dump I made in 2006, including the brilliant source version on pagetable. Still have a lot of fun with it as well as all the KIM clone users.
I found a photo of MOS TECH 9 DIGIT BASIC FOR KIM, COPYRIGHT BY MICROSOFT 1977 2000-437D ID #101 ST. 4065 S/N 217 cassette of a much lower serial number.
What is interesting is the higher End address, 437D versus 4260.
Alas no dump of this cassette is known, so this stays a mystery. as is the illegal tape ID 101.

My MSBasic for the KIM-1 cassette

Another MOS TECH BASIC for KIM-1

A Spanish firm developed a 6502 trainer, an SBC inspired by the KIM-1. Hexadecimal keyboard, 6 LED displays, I/O to experiment with. Assembled system, boxed, high quality components like mechanical keys. Aimed at education.

On the Promax MI-650 page you find:

• Introduction to Promax MI-650
• Manuals
• Monitor EPROM images and sources
• Images of MI-650, MI-650B, MI-650C
• MI-650 video demonstrations

Three versions were made:

• MI-650. 6502, 6532 for keyboard/LEDs/audio cassette, 6522 for user I/O, 2×2716 EPROM, 2x2K SRAM. PCB fingers edge connectors for expansion.
• MI-650B. equal to the MI-650, more convenient expansion connectors.
• MI-650C, a redesign, same dimensions and layout, with more modern components, like 65C02 CPU, larger EPROM and 65C22 for keyboard and LED.

All three share the same monitor program, patched for the MI-650C to use the 6522.

Updates for various sources, motivated by the find of Jose Vicente Marques Vidal of four MI-650s and our attempt to make them operational again (missing EPROMS mostly).