Retro website and forum, CMS Made Simple and PHPBB2

I like small computers, especially the SBC (Single Board Computer) type. These SBC’s give you a direct contact with the hardware, simple enough to understand all what is happening. It once started with the KIM-1, a true SBC of the early days. So in my collection the SBC’s, especially the 6502 based, have a special place. Junior, Micro-KIM, Apple 1 Replica, A-ONE, all variations on that theme. The domain hansotten.nl gives me nearly unlimited access to subdomains, so I combined my love for SBC’s and my love for web publishing: the url retro.hansotten.nl  host a site devoted to the SBC. Build with … Continue reading Retro website and forum, CMS Made Simple and PHPBB2

A-One, another Apple 1 clone

There are several Apple 1 clones made! The Replica-1 by Vince Briel is the first to apply modern components to replace the hard to get and therefore expensive components, like the Signetics 2513 and such, with modern microprocessors  emulating the terminal part. I found another one, with a dutch background, manufactured and sold by Achatz Electronics, the A-One. The design of this clone is similar: the terminal part is replaced by (this time two) microcontrollers, for video and serial interface. Some differences between the two designs: The A-one is even more compact, less IC’s Has a real Apple 1 slot instead of … Continue reading A-One, another Apple 1 clone

My website in Elektuur

For the second time the dutch magazine Elektuur (Elektor as it is called in other countries) has mentioned my website in an article devoted to retro electronics. In the July/August issue, mostly about robotics, an article is devoted to Philips EE-Bouwdozen. In the Links my webpage on the ME1200, the first Philips Mechanical Engineer, is mentioned. The previous time was in this article, about the Elektuur Junior Computer, in the january 2005 issue. Continue reading My website in Elektuur

MSX SCC Mega Flash ROM

The Mega Flash SCC is a cartridge for the MSX with a flash RAM memory inside. So it can be used as a normal cartridge once a suitable program has been stored inside, also known as ‘flashing’. This kind of memory has become quite cheap lately and is a lot easier to work with than the now old-fashioned EPROM’s with UV light erasers and special hardware for programming. The SCC in this Flash module gives this cartridge something extra: the SCC is the music IC that is found in so many MSX Konami games. And the SCC IC also provides … Continue reading MSX SCC Mega Flash ROM

Pascal-M, software archeology

In 1978, via the KIM-1 user club, a Pascal compiler written by Mark Rustad, based on the P2 compiler, with a 6502 interpreter by G.J. v.d. Grinten, was given to me. It was a complete package, on a KIM-1 cassette tape, and with rudimentary documentation. Quickly Micro-Ade, the invaluable assembler/editor, was enhanced to edit Pascal program source. The idea was great, the result was terrible: load Micro-Ade, edit a Pascal program, load the interpreter (4K), compiler (19K), compile the program, load the object, and run the program. Of course the compiler would find errors and then the editing and compiling … Continue reading Pascal-M, software archeology

Programming again: KIMPAPER

The micro-KIM made me start programming again! http://www.brielcomputers.com/ asked me  if I had a utility to convert from binary, like the KIM-1 programs on my website, to the MOS Technology paper-tape format that is understood by the KIM-1 monitor for loading programs. And yes, such a utility once existed, written by me as part of a teminal emulation and loading/saving package on VAX/VMS. Long time ago (1985), VAX/VMS Pascal and I only have a not  source on paper. So I started writing a program to be called KIMPAPER to convert between the MOS Technology paper-tape format and the not so intelligent BIN, … Continue reading Programming again: KIMPAPER

Micro-KIM will go into production!

Some weeks ago I told you about the micro-KIM, a KIM-1 clone designed and to be produced by Vince Briel. Update on june 2, 2007: the micro-KIM is available for pre-ordering! As a kit or as assembled and tested unit! The KIM-1 pages on my website have been expanded a lot to prepare for the launch of the Micro-KIM. I have ordered and received a micro-KIM< together with a 32K RAM expansion. The first batch had some PCB errors, easy to repair. This KIM runs all programs now, except for cassette audio  in/output.   Continue reading Micro-KIM will go into production!