Mainframe Emulations and VM/370

Much early IBM Mainframe software was distributed without copyright, and can be freely copied. This includes VM/370, an early hypervisor. The last freely distributable version was VM/370R6. Click on the following link for both the original software and several enhanced versions:-

VM/370 Downloads

Differential Analyzers

In the early 1930's a chap at M.I.T. built a mechanical analogue computer, which could be used to solve a wide range of problems involving "rates of change", this was widely copied initially in the UK and later ...

Electronic Analogue Computers

(Or Analog Computers for the West Pondians)

After the WW2 the mechanical differential analysers were later replaced by electronic machines. Initially these were valved and later used transistors and integrated circuits.

CSMP

As digital computers became cheaper they could also be used to solve the problems that had been the domain of  Differential Analyzers and Electronic Analogue Compiters. CSMP was one of the first programs for this task. The moniker Continuous Systems Modeling Program has been applied  to two distinctly separate programs families, CSMP/1130 and CSMP/360.

It the simpler program was available as "Freeware" with the IBM/1130 system. It is variously known as CSMP/1130 or "Block Mode CSMP".  It was also ported to various DEC systems, HP and  was also available on Tymnet. Confusingly it was also used on small IBM/360 systems, perhaps because it was smaller than CSMP/360

The second started as CSMP/360 which was later enhanced and enhanced to become CSMP/II. Sadly I can't find any trace of this software. Please repot any sightings to webmaster <at> smrcc.org.uk.

Atari ST/TT and Falcon pages

After spending a lot of time messing around with moving data to and from my Ataris via serial adn printer ports I finally built an Ethernet interface from a publicly available design

Ethernec

Amateur Computer Club Pages

These pages contain scans of the Amateur Computer Club magazines from the 1970's. New magazines are being added as fast as I can scan them

ACC MAGS