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- Commodore_REU abstract "Commodore's RAM Expansion Unit (REU) range of external RAM add-ons for their Commodore 64/128 home computers was announced at the same time as the C128. The REUs came in three models, initially the 1700 (128 KB) and 1750 (512 kB), and later the 1764 (256 kB, for the C64).The need for the REU came about when Commodore management decided to not use the final version of the custom Memory Management Unit (MMU) which then limited the size of memory in spite of early discussion of a larger memory map. Engineers traveling to the 1985 CES show were confronted with flyers and billboards advertising a memory size that was no longer supported and finally the most upper management asked where the additional memory (Up to 512K) would plug in.By the time of the 1985 CES show in Chicago, the engineers were able to display a spinning globe of the earth as a demonstration of Direct Memory Access (DMA) by the new REU units.The REU hardware was designed by Frank Palia and the dedicated Integrated Circuit (IC) was designed by Victor Andrade. Fred Bowen and Terry Ryan adapted the kernel and Basic to accommodate the REU natively and Hedley Davis wrote the globe spinning demo which was an impressive display of animation in the mid 1980s.".
- Commodore_REU thumbnail Globe.gif?width=300.
- Commodore_REU wikiPageExternalLink ram_expansion_unit_reu.
- Commodore_REU wikiPageExternalLink 17XX.
- Commodore_REU wikiPageExternalLink ramdos.zip.
- Commodore_REU wikiPageID "779656".
- Commodore_REU wikiPageLength "7350".
- Commodore_REU wikiPageOutDegree "37".
- Commodore_REU wikiPageRevisionID "703992090".
- Commodore_REU wikiPageWikiLink Bank_switching.
- Commodore_REU wikiPageWikiLink Bit.
- Commodore_REU wikiPageWikiLink Bulletin_board_system.
- Commodore_REU wikiPageWikiLink Bus_(computing).
- Commodore_REU wikiPageWikiLink CMD_RAMLink.
- Commodore_REU wikiPageWikiLink M.
- Commodore_REU wikiPageWikiLink Category:CBM_storage_devices.
- Commodore_REU wikiPageWikiLink Category:Commodore_64.
- Commodore_REU wikiPageWikiLink Category:Home_computer_peripherals.
- Commodore_REU wikiPageWikiLink Category:Memory_expansion.
- Commodore_REU wikiPageWikiLink Central_processing_unit.
- Commodore_REU wikiPageWikiLink Commodore_128.
- Commodore_REU wikiPageWikiLink Commodore_1541.
- Commodore_REU wikiPageWikiLink Commodore_64.
- Commodore_REU wikiPageWikiLink Commodore_BASIC.
- Commodore_REU wikiPageWikiLink Commodore_International.
- Commodore_REU wikiPageWikiLink Computer_data_storage.
- Commodore_REU wikiPageWikiLink Creative_Micro_Designs.
- Commodore_REU wikiPageWikiLink Do_it_yourself.
- Commodore_REU wikiPageWikiLink GEOS_(8-bit_operating_system).
- Commodore_REU wikiPageWikiLink GeoRAM.
- Commodore_REU wikiPageWikiLink Home_computer.
- Commodore_REU wikiPageWikiLink Instruction_cycle.
- Commodore_REU wikiPageWikiLink Integrated_circuit.
- Commodore_REU wikiPageWikiLink Kilobyte.
- Commodore_REU wikiPageWikiLink Megabyte.
- Commodore_REU wikiPageWikiLink Memory_address.
- Commodore_REU wikiPageWikiLink Printed_circuit_board.
- Commodore_REU wikiPageWikiLink RAM_drive.
- Commodore_REU wikiPageWikiLink Random-access_memory.
- Commodore_REU wikiPageWikiLink Resistor.
- Commodore_REU wikiPageWikiLink Super_1750_Clone.
- Commodore_REU wikiPageWikiLink File:Commodore_1764_REU.jpg.
- Commodore_REU wikiPageWikiLink File:Globe.gif.
- Commodore_REU wikiPageWikiLinkText "17xx-series REU".
- Commodore_REU wikiPageWikiLinkText "CBM 1750 REU".
- Commodore_REU wikiPageWikiLinkText "Commodore 1764".
- Commodore_REU wikiPageWikiLinkText "Commodore 17xx-series REU".
- Commodore_REU wikiPageWikiLinkText "Commodore RAM Expansion Unit".
- Commodore_REU wikiPageWikiLinkText "Commodore REU".
- Commodore_REU wikiPageWikiLinkText "RAM Expansion Unit".
- Commodore_REU wikiPageWikiLinkText "RAM Expansion Units".
- Commodore_REU wikiPageWikiLinkText "RAM expansion units".
- Commodore_REU wikiPageWikiLinkText "RAM expansion".
- Commodore_REU wikiPageWikiLinkText "REU".
- Commodore_REU wikiPageUsesTemplate Template:Reflist.
- Commodore_REU subject Category:CBM_storage_devices.
- Commodore_REU subject Category:Commodore_64.
- Commodore_REU subject Category:Home_computer_peripherals.
- Commodore_REU subject Category:Memory_expansion.
- Commodore_REU type Computer.
- Commodore_REU type Peripheral.
- Commodore_REU comment "Commodore's RAM Expansion Unit (REU) range of external RAM add-ons for their Commodore 64/128 home computers was announced at the same time as the C128.".
- Commodore_REU label "Commodore REU".
- Commodore_REU sameAs Q2124010.
- Commodore_REU sameAs RAM_Expansion_Unit.
- Commodore_REU sameAs Commodore_REU.
- Commodore_REU sameAs m.03bqns.
- Commodore_REU sameAs Q2124010.
- Commodore_REU wasDerivedFrom Commodore_REU?oldid=703992090.
- Commodore_REU depiction Globe.gif.
- Commodore_REU isPrimaryTopicOf Commodore_REU.