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4 MB DRAM internal memory expansion for CPC.  
4 MB DRAM internal memory expansion for CPC.  


* It's first 512Kbyte are compatible with external memory expansions (Dk'tronics, Inicron RAM-BOX), using port #7Fxx (see [[Standard Memory Expansions]]).
* It's first 512 Kbyte are compatible with external memory expansions (Dk'tronics, Inicron RAM-BOX), using port #7Fxx (see [[Standard Memory Expansions]]).
* Additional 3.5MBbyte can be used trough ports #78xx to #7Exx (see [http://8bit.yarek.pl/upgrade/cpc.cpc4mb/index.html CPC4MB] Page, for futher details).
* It's first 2 MB are compatible to RAM7's 2 MB expansion.
* The whole 4 MB can be used trough ports #78xx to #7Fxx (see [http://8bit.yarek.pl/upgrade/cpc.cpc4mb/index.html CPC4MB] Page, for futher details).


== Software ==
== Software ==

Revision as of 20:11, 10 December 2010

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4MB expansion kit

Description

4 MB DRAM internal memory expansion for CPC.

  • It's first 512 Kbyte are compatible with external memory expansions (Dk'tronics, Inicron RAM-BOX), using port #7Fxx (see Standard Memory Expansions).
  • It's 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 futher details).

Software

  • Currently, CPC4MB is supported by FutureOS version .8.
  • The first MB of the 4 MB expansion (&7Fxx, &7Exx) is supported by SymbOS version 2.

Schematics

Altrough CPC4MB can be ordered fully asembled (even with mounting on a CPC board), there's still a download of PCB design on CPC4MB page, if you want to DIY.

See also the list of memory expansions for the CPC