Hans Otten

Retro computing, mostly KIM-1 and clones like PAL-1

Hans Ottenhansotten
2025-06-25

@mrdoornbos Sorry to not be able to follow you.

Hans Ottenhansotten
2025-06-19

In Bad König, Westenwald, Germany, Matthias Schmitt and his wife have developed a museum dedicated to Technik called TECMUMAS. Mostly retro computers from the early days to the nineteens.

Here some photos of my visit in June 2025, when I was given the opportunity to see and photograph MOS Technology KIM-4 and KIM-5 devices and the Synertek MDT 1000.

Besides those systems TECMUMAS is home to about 1400 computers.

tecmumas.de/

retro.hansotten.nl/tecmumas-de

Hans Ottenhansotten
2025-06-17

@olimex supported with drivers in rpi os or custom ?

Hans Ottenhansotten
2025-06-16

During a visit to the TECMUMAS museum I found a Synertek MDT 1000 development system. Only known to me from an advertisement in Electronics 1980.

retro.hansotten.nl/6502-sbc/sy

tecmumas.de/

MDT 1000 SynertekMDT 1000 SynertekMDT 1000 SynertekMDT 1000 Synertek
Hans Ottenhansotten
2025-06-11

Thanks to a tip by Stefano B., who found tape dumps of university archives I have added:

Compilers developed at the Vrije Universiteit, Amsterdam

– Pascal-U, 1977 derivate of the portable Pascal P2
– Pascal-VU, the ISO standard Pascal compiler 1979
– the Amsterdam Compiler Kit

I also added some personal information about my time at the VU

Stefano also traced the Pascal P3 compiler, 1976, missing link between Pascal P2 and P4

Some variants of Pascal-S are also found.
pascal.hansotten.com/2025/06/1

Hans Ottenhansotten
2025-06-09

New information added to the Synertek pages:

Images of Synertek objects in my collection
retro.hansotten.nl/6502-sbc/sy

VIM-1 Reference Manual May 1978 scanned
Circuit Diagram SM-1 high resolution high quality scanned
SYM-1 Technical Notes
retro.hansotten.nl/6502-sbc/sy

Manual of KTM-2 and KTM-2/80
February 1981, high quality
retro.hansotten.nl/6502-sbc/sy

SYM-2 manual, photos, source of monitor and ROM dump
retro.hansotten.nl/6502-sbc/sy

SYM-1SYM-1SYM-1VIM-1
Hans Ottenhansotten
2025-06-08

Retro archeology: found the sources etc of two early VU Pascal compilers! And the source of the P3 compiler. P2 and P4 are well known, P3 was thought to be lost.
Lots to update on my Pascal website the next days!

Hans Otten boosted:
2025-06-01

If for anyone the with -o3 Pico2 UF2 version di freeze then try the UF2 version compiled with -o2
Had this only with the compiled FRAROUND of the MBASIC version.
On the v4.5.2 of the Pico Cord I think it was also working with the -o3 version

Hans Ottenhansotten
2025-05-28
Hans Ottenhansotten
2025-05-28

Thanks to Paul Schroeter I have also published the SYM-2 Reference Manual.
retro.hansotten.nl/6502-sbc/sy

Hans Ottenhansotten
2025-05-25

Synertek SYM-1 and SYM-2 updates.
- Higher quality version of the Reference manual of the SYM-1, third edition.
-Recreated sources of the monitor ROM of SYM-1 1. and 1.1 and SYM-2 2.0
See here: retro.hansotten.nl/6502-sbc/sy
retro.hansotten.nl/6502-sbc/sy

Hans Otten boosted:
Extreme Kits ЖExtKits@mstdn.social
2025-05-25

RomWBW Pico Z80 CPM computer emulator extkits.co.uk/product/pico-rom

and

RC2040 Pico #RC2014 Z80 emulator extkits.co.uk/product/rc2040/

Now both compile under SDK2

Most issues fixed by using a later release of SDK2 (glad I waited for that one, rather than trying to fix the bleeding edge) and the serial port issue was a minor fix sent to me by a contributor (Thanks)

Other XK Pico kits to be SDK2'ed later...

Hans Ottenhansotten
2025-05-20

@mrdoornbos So true: Use the tools that work for you! And move on to another if the tools is not fit for the purpose you need it for.
All these silly fanboy wars are childish.

Hans Otten boosted:
Eduardo Casinoeduardocasino
2025-05-20

Yet another CP/M-65 port for the KIM-1, this time using Corsham's SD Shield as a floppy emulator.
github.com/eduardocasino/cpm65

Hans Otten boosted:
Extreme Kits ЖExtKits@mstdn.social
2025-05-18

RC2040 - Retro emulated Z80 CP/M computer kit
The RC2040 is a PI PICO emulated RC2014 kit, with CP/M-80. It is capable of running the stock ROM images currently supported by the RC2014 (except RomWBW) which gives you a number of monitors and ROM based BASIC.

SD card and Pico come programmed with ... Read More - extkits.co.uk/rc2040
#kits #makers #stem #science

The RC2040 is a PI PICO emulated RC2014 kit, with CP/M-80. It is capable of running the stock ROM images currently supported by the RC2014 (except RomWBW) which gives you a number of monitors and ROM based BASIC.

SD card and Pico come programmed with the RC2040 Software and RC2014 ROMS and use the same FFS python transfer software as the SD card RC2014 kit.

This kit now has support for RunCPM as well as CP/M-80 / RC2014 emulation and ROMWBW
Source & Binary available for both RUN CPM and FUZIX a small UNIX

 
Hans Otten boosted:
Olimexolimex
2025-05-16
signetics emulatorsignetics terminal
Hans Otten boosted:
mrdoornbosmrdoornbos
2025-05-09

So, you have a KIM-1 Clone running BASIC, a whopping 49k of RAM free, and want to compute like it's 1976.

You only have 1200 bps terminal and no graphics, but quite a lot of free RAM. One idea is you can spend a kinda ridiculous amount of time writing a Mars Colony simulator game on it.

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