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- Aamber_Pegasus abstract "The Aamber Pegasus is a home computer first produced in New Zealand in 1981 by Technosys Research Labs.The hardware was designed by Stewart J Holmes. The software was designed by Paul Gillingwater, Nigel Keam and Paul Carter.An optional multi ROM board in conjunction with a rotating dial allowed switching between 6 EPROM banks containing multiple language environments, games and applications. The EPROM based language environments include EXTENDED BASIC, PASCAL, BASIC (a variant of TinyBASIC), MAD (Assembler/Disassembler) and FORTH. Games available on EPROM are TANKS, INVADERS and GALAXY WARS. Other software included MONITOR (the system BIOS which needed to be present for the system to run) and a word processor application called WORD. The system allowed loading of programs by cassette. Some available cassettes include SNAKES, STAR TREK, HANGMAN and CHARACTER GENERATOR. A network version of the Aamber Pegasus provided connectivity to a 6809-based server (SWTPC-6809). Especially the networking version attempted to address the New Zealand Government's computers in schools initiative,but never produced the hoped-for large orders. It is thought that Apple Computers introduction of the Apple II computer into the New Zealand market, and its subsequent heavy educational discounting was the final nail in the coffin for Technosys and the Aamber Pegasus computer. Total production numbers are unknown, but it is thought that fewer than a hundred units were ever sold.One of the most unusual aspects of the machine is that to save the cost of a CRTC, the processor set up some bits on the 6821(PIA) to control the row being read out, then stepped through a series of NOPs so that the address lines of the CPU could act as a big counter. This counter drove the X address of the display RAM. On every row, the CPU updates the row number selected from the character ROM (and programmable character RAM) and every 16th row it increments the Y address of the display RAM. At the end of the screen the output is blanked, and the CPU gets to do some “real” work until the FIRQ pin is pulsed by the 50 Hz line from the power supply. Essentially the Pegasus used the mains frequency to trigger vertical sync. Because of this, the CPU is ~90% occupied as a counter, so in a non-real-time application you could disable the FIRQ (one bit in the 6809’s CC reg) and the Pegasus ran 10x faster – albeit with a blank screen. In this respect it was similar to the Sinclair ZX81 which used its ‘FAST’ mode in much the same way.On the left side of the Pegasus motherboard you can see a small blob of putty. This putty is hiding a series of diodes that act as a simplistic 8-bit ID. This 8-bit ID will only allow EPROMs encoded with a corresponding ID to work in any individual machine. For example, an EPROM from a machine numbered 2569 will not work in another Pegasus with a different ID.".
- Aamber_Pegasus cpu Motorola_6809.
- Aamber_Pegasus thumbnail Aamber_Pegasus_Logo.jpg?width=300.
- Aamber_Pegasus wikiPageID "27092622".
- Aamber_Pegasus wikiPageLength "4343".
- Aamber_Pegasus wikiPageOutDegree "32".
- Aamber_Pegasus wikiPageRevisionID "642197181".
- Aamber_Pegasus wikiPageWikiLink Aamber_Pegasus.
- Aamber_Pegasus wikiPageWikiLink Assembly_language.
- Aamber_Pegasus wikiPageWikiLink BASIC.
- Aamber_Pegasus wikiPageWikiLink Category:1981_introductions.
- Aamber_Pegasus wikiPageWikiLink Category:6809-based_home_computers.
- Aamber_Pegasus wikiPageWikiLink Category:Information_technology_in_New_Zealand.
- Aamber_Pegasus wikiPageWikiLink Computer_keyboard.
- Aamber_Pegasus wikiPageWikiLink Disassembler.
- Aamber_Pegasus wikiPageWikiLink EPROM.
- Aamber_Pegasus wikiPageWikiLink Forth_(programming_language).
- Aamber_Pegasus wikiPageWikiLink Galaxy_Wars.
- Aamber_Pegasus wikiPageWikiLink Hangman_(game).
- Aamber_Pegasus wikiPageWikiLink Home_computer.
- Aamber_Pegasus wikiPageWikiLink Keyboard_(computing).
- Aamber_Pegasus wikiPageWikiLink Motorola_6809.
- Aamber_Pegasus wikiPageWikiLink New_Zealand.
- Aamber_Pegasus wikiPageWikiLink Pascal_(programming_language).
- Aamber_Pegasus wikiPageWikiLink QWERTY.
- Aamber_Pegasus wikiPageWikiLink RF_modulator.
- Aamber_Pegasus wikiPageWikiLink Random-access_memory.
- Aamber_Pegasus wikiPageWikiLink Snake_(video_game).
- Aamber_Pegasus wikiPageWikiLink Space_Invaders.
- Aamber_Pegasus wikiPageWikiLink Star_Trek_(text_game).
- Aamber_Pegasus wikiPageWikiLink Tank_(arcade_game).
- Aamber_Pegasus wikiPageWikiLink Tank_(video_game).
- Aamber_Pegasus wikiPageWikiLink Technosys.
- Aamber_Pegasus wikiPageWikiLink Television.
- Aamber_Pegasus wikiPageWikiLink TinyBASIC.
- Aamber_Pegasus wikiPageWikiLink Tiny_BASIC.
- Aamber_Pegasus wikiPageWikiLink ZX81.
- Aamber_Pegasus wikiPageWikiLink File:Aamber_Pegasus_Logo.jpg.
- Aamber_Pegasus wikiPageWikiLink File:Aamber_Pegasus_PCB_2569.jpg.
- Aamber_Pegasus wikiPageWikiLink File:Aamber_Pegasus_Photo.jpg.
- Aamber_Pegasus wikiPageWikiLinkText "Aamber Pegasus".
- Aamber_Pegasus hasPhotoCollection Aamber_Pegasus.
- Aamber_Pegasus input Computer_keyboard.
- Aamber_Pegasus input Keyboard_(computing).
- Aamber_Pegasus logo File:Aamber_Pegasus_Logo.jpg.
- Aamber_Pegasus memory "4".
- Aamber_Pegasus processor "MC6809C CPU".
- Aamber_Pegasus released "1981".
- Aamber_Pegasus type Home_computer.
- Aamber_Pegasus wikiPageUsesTemplate Template:Infobox_computer.
- Aamber_Pegasus wikiPageUsesTemplate Template:Refimprove.
- Aamber_Pegasus wikiPageUsesTemplate Template:Reflist.
- Aamber_Pegasus subject Category:1981_introductions.
- Aamber_Pegasus subject Category:6809-based_home_computers.
- Aamber_Pegasus subject Category:Information_technology_in_New_Zealand.
- Aamber_Pegasus hypernym Computer.
- Aamber_Pegasus type Article.
- Aamber_Pegasus type Device.
- Aamber_Pegasus type InformationAppliance.
- Aamber_Pegasus type Article.
- Aamber_Pegasus type Computer.
- Aamber_Pegasus type Microcomputer.
- Aamber_Pegasus type Platform.
- Aamber_Pegasus type Thing.
- Aamber_Pegasus type Q1067263.
- Aamber_Pegasus comment "The Aamber Pegasus is a home computer first produced in New Zealand in 1981 by Technosys Research Labs.The hardware was designed by Stewart J Holmes. The software was designed by Paul Gillingwater, Nigel Keam and Paul Carter.An optional multi ROM board in conjunction with a rotating dial allowed switching between 6 EPROM banks containing multiple language environments, games and applications.".
- Aamber_Pegasus label "Aamber Pegasus".
- Aamber_Pegasus sameAs m.0br_rnv.
- Aamber_Pegasus sameAs Q4661443.
- Aamber_Pegasus sameAs Q4661443.
- Aamber_Pegasus wasDerivedFrom Aamber_Pegasus?oldid=642197181.
- Aamber_Pegasus depiction Aamber_Pegasus_Logo.jpg.
- Aamber_Pegasus isPrimaryTopicOf Aamber_Pegasus.