Again Eduardo Casino has enhanced the KIM-1 Simulator V2.3.0 – The Console has now a complete VT100 emulation DEC Special Character set – The K-1008 Visable Memory is fast! – All settings are saved between sessions retro.hansotten.nl/kim-1-simula... Demo here: youtu.be/GPxkr7j1P6k

A KIM-3B is a 8K bytes memory expansion made by MOS Technology (already part of Commodore then) for the KIM-4 motherboard. I recently acquired a good looking KIM-3B myself. Nothing new, all is already known about it. Now with photos made by myself!

New version of the KIM-1 Simulator coming: complete VT100 support in the console!

TERC, an educational center, has developed around 1980 an interface system for the KIM-1. It makes the I/O available with solderless connections, has a breadbaord and connections for audio tape input/output, power supply and teletype. I recently acquired this up till now unknown interface.

SYM-1 by Synertek was another KIM-1 competitor. Compatible enough to run KIM software, different enough to justify its own manual. The 6502 trainer market of the late '70s was surprisingly crowded.

Much much better <3

A demo of the new facilities in the KIM-1 Simulator. youtu.be/eROGWF9pVmw

A survey of 6502 testers: youtu.be/njk2lyxioyo retro.hansotten.nl/what-cpu-is-...

Nice to see my white 6502 CPU is OK, and is indeed missing the ROR instruction.

2 new KIM-1 videos: youtu.be/f0VLC-ol2EA?... youtu.be/-X5MzW2Rz1c?...

More MTU Micro Technology Unlimited material added: retro.hansotten.nl/mtu-document...

www.youtube.com/watch?v=fVIj... Use a PET as cassette player for the KIM-1

My new Jolt!

Tindie is back!

R65 – A late seventies computer built with a KIM-1 by Rene Richarz. An amazing showcase of how far a KIM-1 and Pascal as programming language can go! Information on the R65 and emulator of this computer on github archive of Rene Richarz Including sources and documentation github.com/rricharz/R65

There are at least seven KIM-1 board revisions, labeled A through G (plus the original unlabeled one). Rev C is a mystery - nobody's confirmed one exists. If you have one, the retro computing world would like a word. retro.hansotten.nl/kim-1-what-changed-in-the-revisions/

MTU K-1013 FDC emulation added to the KIM-1 Simulator. Eduardo Casino added the FDC support. Now not only the SD Shield but also the upd765 based FDC support allows to run CP/M-65 and the native CODOS for KIM-1 operating systems. retro.hansotten.nl/6502-sbc/kim...

This is what a maxed out KIM-1 looked like: R65 - A late seventies computer built with a KIM-1 github.com/rricharz/R65... #65o2 #mos6502 #kim1

Wanted a case for a KIM-1? Options in the 80ties were available. Here an example, suitable for educational purposes.

What changed in the KIM-1 Revisions? The PCB underwent several changes around the logo area, takeover by Commodore . The big change was in the clock circuit between the first edition and Rev A. The first batch of KIM-1 suffered from the issue that the clock would not start. It was fixed in Rev A.

New versions of KIM-1 Simulator (V2.0.0) with SD Card Shield, CP/M-65 and xKIM, and Jolt Simulator (V0.9). Read all about it here: retro.hansotten.nl/new-versions...

Eduardo Casino has created a faithful replica of the Jolt single board computer. 6502,6530-004 TIM and 6520. TTY or RS232C 512b RAM. He designed using the information available. The replica on GitHub, github.com/eduardocasin... More information on the Jolt, retro.hansotten.nl/6502-sbc/jol...

White KIM-1 cleanup This one is a Rev D with a ‘white’ PCB. The KIM-1 is working. The keyboard handmade@. With the DIY keypad method based upon the work of Eduardo Casino and Pete (peo2000)I replaced the keyboard Wires removed clean with alcohol and a brush this KIM-1 may join my collection

A spare KIM-1 keypad is even rarer than a KIM-1 itself. With this guide you can build a reasonable replica of the keypad. Thanks to the work of Eduardo Casino (the PCB) and Pete (peo2000 on forum64.org) I have published a DIY guide for a KIM-1 keypad replica. retro.hansotten.nl/6502-sbc/kim...

The A-ONE family on my desk

In 2025 Franz Achatz revived the A-ONE Apple 1 replica. The excellent design is refreshed, a new family member added: the A-ONE PLUS. I now have the 2025 standard board, the 2025 PLUS and the 2006 EXTENDED. With the prototype boards and cassette interface. retro.hansotten.nl/6502-sbc/app...

Apple 1 show off

Sir Charles Antony Richard Hoare (11 January 1934 – 5 March 2026), also known as C. A. R. Hoare, pioneering computer scientist. His seminal contributions include - Quicksort Quickselect Hoare logic Null reference Communicating sequential processes Structured programming ALGOL

Here is a brief document showing commands available and an introduction to using the assembler: github.com/DavidJRichar... Best regards, David

The KIM-1 had 1K of RAM and a hex keypad. No screen. No keyboard. No storage. And yet people wrote chess programs for it. In hex. By hand. We were not okay.

Adventue - Colossal Cave got a full port to the KIM-1 by Ryan Roth. What a Hero. github.com/ryaneroth/Ad... #65o2 #kim1

One ROM Hardware Guide: Getting Started with One ROM #1 #RetroComputing #OneROM #HardwareHacking #8bit #VintageComputing #ROM #Commodore #RetroTech #DIYElectronics theoasisbbs.com/one-rom-hard...

New project, cleanup and restore this KIM-1 . Poor thing still works but had a rough life. KIM-1 collection complete now ..

Royce Taft has a MACH-9 MMS Inc 6809 CPU Plug-in for AIM 65 and reverse engineered it. He sent me his design to be published here. retro.hansotten.nl/6502-sbc/aim...

Full video of the KIM-1 kernal, functional disk drive, and authentic Commodore BASIC all running directly on a Commodore 1541 disk drive!!! Meet FranKIMstein youtu.be/yyDtIBbYES0 #Commodore #KIM1 #RetroComputing #C64Reposts

Troubleshoot a 6502? See this session: atariprojects.org/2024/10/19/t...

You know the KIM-1 by now, but what about the SYM-1? retro.hansotten.nl/6502-sbc/synertek-sym-ktm/

KIM1 MOD replica KIM-1 by Voyageur. Battery powered. FM1808 for ROM and RAM keeps contents. From Google group PAL 6502 computer Read aboutKIM1Mod :http://retro.hansotten.nl/6502-sbc/kim-1-manuals-and-software/my-kim-1-family/kim-replicas-and-clones/kim-1-portable-version-made-by-voyageur6502/

PicoSYM, a SYM-1 emulator on a Raspberry Pico Emulation of Synertek SYM-1 on a Pico By andysa on 6502.org Read about it: retro.hansotten.nl/6502-sbc/syn... PicoSYM emulates a SYM-1 with the Supermon V1.1 Monitor, Basic, RAE Assembler & Editor and 1541DOS at the typical addresses. .

MS Basic running on the 1541 with load and save implemented. Dave‘s a biest x.com/commodoreihs...

www.osnews.com/story/144242... #kim1 #65o2

Wow! Dave McMurtries 1541KIM is gettigng disc routines as it seems \o/ 💾 🎉 github.com/commodoreihs...

The LEDIP text editor or MicADE, a database program called Datensuche, calculators, a clock, a banner printer, and even music programs. A tiny computer with a huge ecosystem. 🚀🖥️

Which transistors are used int he KIM-1 and clones? The LED driver and serial circuit require transistors. MOS used 2N5371 and 2N5375, in later KIM-1s a wider variety. A question in forum64.de in the Nachbau KIM-1 thread made me look at my KIM-1 retro.hansotten.nl/6502-sbc/kim...

50 years of KIM-1! The birth can be traced to January 1976. The sale ended in 1981. KIM is Dead!!! Long KIM!!!

Your first KIM-1 program! www.kim-1.com/docs/usrman....

But you can’t beat the real thing. Look at those yellow capacitors!

The great thing about the KIM-1 is that if you don’t have an original you can build yourself a clone. Here is a PAL-II you can find on Tindie beside an original.

Mark Wutka's Linux command line github.com/wutka/kim1-e... Oskar Vermeulen's Arduino based obsolescence.wixsite.com/obsolescence... And to know what you are doing get "The First Book of KIM" by Butterfiels, Ockers, Rehnke retro.hansotten.nl/6502-sbc/kim... #65o2 #mos6502 #kim1 #kim-1

An original KIM-1 is expensive these days. To get a clue what this computer was all about, you can emulate it - here are several emulators: Hans Otten's Win / Linux retro.hansotten.nl/6502-sbc/kim... John's iOS apps.apple.com/us/app/virtu... Maksim's Browser maksimkorzh.github.io/KIM-1/ #kim1at50