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1802 Cosmicos
Cosmicos is the name for a SBC around the RCA 1802 CPU. Cosmicos stands for COSMAC MINI COMPUTERSYSTEM.
Published in the dutch magazine Radio Bulletin, developed by the editor (later editor in chief) Bob Stuurman.
The system is loosely based on the Cosmac ELF design. Compatibility with the ELF was later improved in the cassette routine loader, Tom Pitmann's Tiny Basic and such.
Have a look at the Spare Time Gizmo Cosmac ELF 2000 for a kit to build an ELF board now!
The goal of the development of the Cosmicos system was a simple microcomputer, selfbuilt and fit for expansion and experiments.
In the picture above you see the Cosmicos with many expansions developed by Bob, like a hex keyboard and 8 LED displays, cassette interface, RAM and ROM cards. The basic system is the board itself, without software in ROM, simple digits and two seven segment LED displays.
The design and well written articles and the availability of the PCB's made the Cosmicos a succes, many were built and a user club became active around the system.
Articles on the Cosmicos appeared from september 1979 to april 1984. The series ended with the design of a floppy disk interface, combined with 48K RAM and a videodisplay. From simple microprocessor to complete computer system, truly a story worth to be told.
The book
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Cosmicos book part 1 This is a dutch book! |
Het boek bevat alle artikelen verschenen in Radio Bulletin, van september 1979 tot en met April 1981.
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| Bob Stuurman, 1984 | First version Cosmicos april 1979 |
My Cosmicos
My Cosmicos was acquired by me in 2008. It was a badly abused and poorly constructed board, and it took a lot of effort to restore it to the original state.
All additions not original were removed, bad soldering repaired, cleaned, damaged components such as the led display replaced, new legends on the buttons added.
On the next pictures you see the board as it is now. Still missing is the battery holder, the one on the baord was heavily corroded (the careless owner had forgotten to remove leaking batteries).
The Cosmicos shown here has two 4K RAM cards, total of 8K RAM and one 4K EPROM card with the ASCII monitor in a 2716 EPROM.
Radio Bulletin artikelen Cosmicos
All Radio Bulletin articles are listed on the next page.
This is the list of scanned articles , since they appeared after the book was published or were
not included in the book.
All articles are in dutch!
| Oktober 1980 | Informatie voor 1802 gebruikers |
| Maart 1981 |
1802 EPROM-programmeerprogramma, |
| Juni-Juli 1981 | Videokaart voor de 1802-systemen |
| October-November-December 1981 Januari 1982 |
1802 ASCII- Monitor |
| Maart-April-Mei 1982 | 48K dynamische RAM-kaart |
| April 1982 | Cosmicos lichtkrant |
| Augustus- Oktober 1982 | PPI Universeel voor 1802 |
| Februari 1983 | |
| Juni-Juli 1983 Februari- Maart-April 1984 |
Floppy-disk voor het 1802-systeem |
Publicatie artikelen en boek met toestemming van Bureau Belper, Uitgever en rechthebbende.