The KIM-1 design inspired many designers of 6502 systems, mimicking either the unique LED and keypad setup or by having the same application and expansion connector

Notable are:
– SYM-1 Application and expansion connector, LED and keypad display, tape format
– AIM 65 Application and expansion connector, tape format
– MCS Alpha 1 LED and keypad display, tape format
– Elektor Junior LED and keypad display, tape format
– KIM Uno emulator LED and keypad display

On this page photos of KIM-1 ‘clones’ are shown. The KIN and SuperKIM are KIM-1s because they have he KIM-1 RRIOTs. The last two, a ‘scandinavian’ and a Conversational Voice Terminal Corp one have a PCB with similar layout and sizes, real KIM-1’s with newer/more RAM.

The KIN microcomputer

A portable KIM-1 clone. Used in gambling it seems. 6530-003 only. 1K RAM (2x 2114), 4K EPROM (2x 2716).
Original article on this website.
PDF of the design of the KIN computer

SUPERKIM

A KIM clone developed by Paul Lamer for track testing at races. The Super KIM was sold us board also, as advertisements show.
A true KIM clone with both 6530 RRIOTs, 4K Bytes RAM (8x 2114), 8 bit latched priority interrupts, 4 6522 VIAs, 16K Bytes EPROM (4x 2732), Power supply on baord, tri-state address and databus buffers, KIM-1 edge card connectors.

Read here more about the SUPERKIM

Scandinavian? KIM

Found this photo in a Facebook group, from an Ebay auction. , no more information known. Looks like a standard KIM-1 with 2x 2114 SRAM ICs for the standard 1K RAM.

Recently on Ebay an identical KIM-1 lookalike showed up. The PCB is inspired but clearly newly designed.
Armin Hierstetter bought it and send me the following photos.

Conversational Voice Terminal Corp, Chicago Illinois

This one also popped up on ebay without much information. A KIM-1, PCB newly layout, 4K RAM (8x 2114 IC’s), for the rest a traditional KIM-1.

The KIM-1 has 2K ROM, in two 1K maskable ROMS of the 6530-002 and 6530-003.
The 6530-002 implements a TTY interface, a keyboard interface (hence the name Keyboard Interface Monitor) and 6 7 segment LED displays.
6530-003 is an audio cassette recorder extention of the KIM monitor.

On this page binaries and source listings and assembler sources for various assemblers.

I have two sets of KIM-1 ROMs. One set is the original KIM-1 dump by Dwight Elvey, in which the filler bytes (unused locations in the ROM) are filled with $00.
Alas the dumps by Dwight have a couple of bit errors and the NMI vector is wrong.

The other set is the result of assembling the source (see below) in which the assembler used $FF for the filler bytes. Makes sens to use $FF, since EPROMs can program ‘1’s byte for byte later to 0’s.
Functionally the filler byte is irrelevant, so I present here the ROMs with filler byte 00 (corrected Dwight original KIM-1 dumps) and filler byte FF (assembly result).

6530-002 $1C00-$1FFF, filler bytes $FF 6530-002 ROM
6530-003 $1800-$1BFF, filler bytes $FF 6530-003 ROM

6530-002 $1C00-$1FFF, filler bytes $00 6530-002 ROM
6530-003 $1800-$1BFF, filler bytes $00 6530-003 ROM

Source code listings

Listing from the User Manual appendix
Listing from the User Manual appendix in text HTML format
Listing from the User Manual appendix in text format

Assembler sources

Source in MOS Technology format
Source in Ruud Baltissen assembler format
Source in CC65 format