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| − | [[Image:Silicon disk.JPG|thumb|Box and Manual for the memory expansion (464 version)]]
| + | #REDIRECT [[Dk'tronics memory expansion]] |
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| − | [[Image:Silicon disc front2.jpg|thumb|A closeup of 6128 version]]
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| − | A 256Kb RAM expansion for the CPC. This combined with the DkTronics 256Kb memory expansion (advertised as such) would give the CPC an additional 512Kb RAM in the case of a 464/664 or an additional 448Kb RAM in the case of the 6128 - ie: in all cases a maximum of 576Kb RAM.
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| − | == Silicon Disc Versions ==
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| − | * "dk'tronics Silicon Disc" cartridge
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| − | * "dk'tronics Silicon Disc Operation System" cartridge
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| − | The difference here is probably, that the first cartridge contains plain RAM, the second additionally a BIOS ROM with RSX commands for accessing the RAM disc.
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| − | == Other Versions ==
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| − | Dk'tronics also made the "[[Dk'tronics memory expansion]]". Not sure if/how it differs from the "Silicon Disc". Maybe it's just renamed and contains exactly the same hardware... or maybe one of the devices is battery-backed, and the other isn't...?
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| − | An article in Amstrad Action described how a Silicon Disk can be converted into a 256K memory expansion. I think this applies to the RAM part only. [which article is that?]
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| − | == Some relevant Info from Manual ==
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| − | * The '''64K silicon disc''' is contained in one unit (Operating system ROM), while the '''256K silicon disc''' is in two units (256K RAM and Operating system ROM).
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| − | * When the computer is powered up the ROM should sign itself on as:-
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| − | ** 'Silicon Disc 0.1' (for use with 64K BANKED RAM)
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| − | ** 'Silicon Disc 1.1' (for use with 256K BANKED RAM)
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| − | * Remember the contents of the silicon disc are lost if the computer is switched off!
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| − | * 64K Silicon Disc: OUT &7F00, &C4+BANK ;where BANK is 0..3
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| − | * 256K Silicon Disc: OUT &7F00, &E4+(BANK AND 3)+(BANK/4)*8 ;where BANK is 0..16
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| − | == Manual ==
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| − | * [[Media:DKTronics_Silicon_Disk_Manual.pdf]] - DK'Tronics User Manual (English)
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| − | == Pictures ==
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| − | <gallery>
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| − | File:NoPicture.gif|Circuit Board
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| − | </gallery>
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| − | [[Category:Hardware]] [[Category:Peripherals]] [[Category:Memory expansions]]
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