PSI Comp 80 (original) (raw)
In 1979, the British magazine Wireless World published the technical details for a "Scientific Computer". Shortly afterward the British firm used this design for their implementation, which they called the PSI Comp 80. It was sold in the form of a kit of parts for a cased single-board home computer system. The system was based on a Z80 Microprocessor addressing a mixture of 8 KB of system RAM and EPROM, plus 2 KB of Video RAM. It used a National Semiconductor MM57109N as a mathematical co-processor to speed up calculations.
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| dbo:abstract | In 1979, the British magazine Wireless World published the technical details for a "Scientific Computer". Shortly afterward the British firm used this design for their implementation, which they called the PSI Comp 80. It was sold in the form of a kit of parts for a cased single-board home computer system. The system was based on a Z80 Microprocessor addressing a mixture of 8 KB of system RAM and EPROM, plus 2 KB of Video RAM. It used a National Semiconductor MM57109N as a mathematical co-processor to speed up calculations. The monochrome Video Display Controller could simultaneously display combinations of 32 lines of 64 characters, and 128 x 64 resolution graphics by either displaying a normal character or a "pseudo graphics" character, with pixel blocks in a 2x2 matrix. A technique similar to the one used in the TRS-80 - It could later be expanded to a higher resolution, although never to colour. Ahead of its time, it incorporated a number crunching coprocessor and a novel language embedded in EPROM called Basic Using Reverse Polish - BURP. Add-ons were developed for the system, including memory expansions, floppy and hard disk interfaces, various software packages and a disk operating system, SCIDOS, which was CP/M-compatible but also included features - structured (pathed) disk folders, etc. - now very familiar to modern-day PC users. During the mid-1980s, the designer of this system, John Adams M.SC., published a new version of the Scientific Computer - the SC84 (Scientific Computer of 1984). It was based upon a backplane and plug-in cards and modules and featuring a Hitachi HD64180 processor, up to 512 kbytes of RAM and a high resolution colour graphics system. (en) |
| dbo:wikiPageExternalLink | http://www.zonadepruebas.com/modules/smartsection/item.php%3Fitemid=788 https://vintagecomputers.sdfeu.org/comp80/ |
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| dcterms:subject | dbc:Home_computers |
| rdf:type | yago:Artifact100021939 yago:Computer103082979 yago:Device103183080 yago:HomeComputer103528523 yago:Instrumentality103575240 yago:Machine103699975 yago:Object100002684 yago:PhysicalEntity100001930 yago:WikicatHomeComputers yago:Whole100003553 |
| rdfs:comment | In 1979, the British magazine Wireless World published the technical details for a "Scientific Computer". Shortly afterward the British firm used this design for their implementation, which they called the PSI Comp 80. It was sold in the form of a kit of parts for a cased single-board home computer system. The system was based on a Z80 Microprocessor addressing a mixture of 8 KB of system RAM and EPROM, plus 2 KB of Video RAM. It used a National Semiconductor MM57109N as a mathematical co-processor to speed up calculations. (en) |
| rdfs:label | PSI Comp 80 (en) |
| owl:sameAs | freebase:PSI Comp 80 yago-res:PSI Comp 80 wikidata:PSI Comp 80 https://global.dbpedia.org/id/4t5z4 |
| prov:wasDerivedFrom | wikipedia-en:PSI_Comp_80?oldid=1071117351&ns=0 |
| foaf:isPrimaryTopicOf | wikipedia-en:PSI_Comp_80 |
| is dbo:wikiPageRedirects of | dbr:PSI_Comp_80_(computer) dbr:Basic_Using_Reverse_Polish |
| is dbo:wikiPageWikiLink of | dbr:List_of_early_microcomputers dbr:PSI_Comp_80_(computer) dbr:Basic_Using_Reverse_Polish |
| is foaf:primaryTopic of | wikipedia-en:PSI_Comp_80 |