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| + | [[image:Cpc4mb3.jpg|right|thumb|4MB expansion kit]] | ||
== Description == | == Description == | ||
| − | 4 MB memory expansion for | + | 4 MB DRAM internal memory expansion for CPC6128. |
| + | |||
| + | * Its first 512 Kbyte are compatible with external memory expansions (Dk'tronics, Inicron RAM expansion, SYMBiFACE II etc.), using port #7Fxx (see [[Standard Memory Expansions]]). | ||
| + | * Its first 2 MB are compatible to RAM7's 2 MB expansion. | ||
| + | * The whole 4 MB can be used trough ports #78xx to #7Fxx (see [https://web.archive.org/web/20120215003307/http://8bit.yarek.pl/upgrade/cpc.cpc4mb/index.html CPC4MB] Page, for further details). | ||
| + | * the expansion connects to the PAL inside the 6128. | ||
| + | * all configuration codes are supported (0-7) and work exactly as they do in a 6128. | ||
| + | * I/O port decoding is: 0xxxxbbbxxxxxxxx (confirmed by TFM) where bbb are 3 bits of the bank. The other 3 bits are from the data decoded as 11bbbccc and ccc the configuration code. Yarek's site recommends that bits A14,A13,A12,A11 are set to 1 to avoid conflict with other hardware. | ||
| + | * accessing the upper 2MB of a 4MB expansion requires special caution to avoid conflict with other hardware expansions. See [[Standard Memory Expansions]] for details. | ||
| + | |||
| + | == Software == | ||
| + | |||
| + | * Currently, CPC4MB is supported by [[FutureOS]] version .8 or higher | ||
| + | * The 4 MB E-RAM Test: [[Media:E-RAM_Test_2014.zip]] | ||
| + | * [[A Tribute to the Sisters|Giana Sisters Remake]] | ||
| + | * [[Captain Future|Captain Future Video Demo]] | ||
| + | * The first MB of the 4 MB expansion (&7Fxx, &7Exx) is supported by [[SymbOS]]. | ||
| + | |||
| + | == Schematics == | ||
| + | |||
| + | Schematics have vanished together with the CPC4MB website and unfortunately have not been archived anywhere else. | ||
== Links == | == Links == | ||
| − | * [http://8bit.yarek.pl/upgrade/cpc.cpc4mb/index.html CPC4MB] | + | * [https://web.archive.org/web/20120215003307/http://8bit.yarek.pl/upgrade/cpc.cpc4mb/index.html CPC4MB] (mirror on Archive.org) |
| + | |||
| + | |||
| + | See also the [[:Category:Memory expansions|list of memory expansions for the CPC]] | ||
| + | |||
| + | [[Category:4 MB RAM Software Support]] [[Category:DIY]] [[Category:FutureOS]] [[Category:Hardware]] [[Category:Memory expansions]] [[Category:Peripherals]] | ||
Contents
Latest revision as of 09:54, 11 January 2025
Description
4 MB DRAM internal memory expansion for CPC6128.
- Its first 512 Kbyte are compatible with external memory expansions (Dk'tronics, Inicron RAM expansion, SYMBiFACE II etc.), using port #7Fxx (see Standard Memory Expansions).
- Its first 2 MB are compatible to RAM7's 2 MB expansion.
- The whole 4 MB can be used trough ports #78xx to #7Fxx (see CPC4MB Page, for further details).
- the expansion connects to the PAL inside the 6128.
- all configuration codes are supported (0-7) and work exactly as they do in a 6128.
- I/O port decoding is: 0xxxxbbbxxxxxxxx (confirmed by TFM) where bbb are 3 bits of the bank. The other 3 bits are from the data decoded as 11bbbccc and ccc the configuration code. Yarek's site recommends that bits A14,A13,A12,A11 are set to 1 to avoid conflict with other hardware.
- accessing the upper 2MB of a 4MB expansion requires special caution to avoid conflict with other hardware expansions. See Standard Memory Expansions for details.
Software
- Currently, CPC4MB is supported by FutureOS version .8 or higher
- The 4 MB E-RAM Test: Media:E-RAM_Test_2014.zip
- Giana Sisters Remake
- Captain Future Video Demo
- The first MB of the 4 MB expansion (&7Fxx, &7Exx) is supported by SymbOS.
Schematics
Schematics have vanished together with the CPC4MB website and unfortunately have not been archived anywhere else.
Links
- CPC4MB (mirror on Archive.org)
See also the list of memory expansions for the CPC