Changes
The first 512K of expansion RAM follow the [[Standard_Memory_Expansions#Standard_128K-512K_Expansions_.28dk.27tronics.2Fdobbertin-style.29|DK'Tronics addressing mode standard]], giving up to 576K of RAM to legacy software. More modern software that supports the [[Standard_Memory_Expansions#Extended_1M-4M_Expansions_.28RAM7.2FYarek-style.29|extended 1M-4M standard]] will be able to access all the provided RAM.
== released == === CPC iRAM/640 ===
* for CPC 6128 only
Status: Released - see https://github.com/etomuc/CPC6128_iRAM-640
== CPC iRAM/576 currently in development ==
=== CPC iRAM/1024 === * for CPC 6128 only464/664* 512K expansionoffers two sockets for SRAMs* total accessible RAM of upgrade to 576K in a 6128 (1 SRAM) or 640K/1024K (2 SRAMS)* first SRAM: Upgrade to 576K, following the DK'Tronics standardwithout support of C3 mode (like many other RAM expansions)* second SRAM: upgrade to 640K (128K SRAM) or 1024K (512K SRAM)* [http://norecess.cpcscene.net/advancedmemoryusage.html C3 RAM banking] supported if both SRAMs are fitted
* easy to assemble, all through-hole components
Status: abandoned as the same components are required as for iRAM/640 with only minimal changes to the PCB and GAL logic.in active development
== currently in development paused / abandoned ==
=== CPC iRAM/1088 ===
* easy to assemble, but some SMD components due to size constraints in the CPC 6128
Status: Prototype successfully tested. Release unclear due to lack of No final PCB yet. Might be resumed if there's demand.
=== CPC iRAM/1024 576 ===
* for CPC 464/6646128 only* offers two sockets for SRAMs512K expansion* upgrade to total accessible RAM of 576K in a 6128 (1 SRAM) or 640K/1024K (2 SRAMS)* first SRAM: Upgrade to 576K, following the DK'Tronics standard without support of C3 mode (like many other RAM expansions) * second SRAM: upgrade to 640K (128K SRAM) or 1024K (512K SRAM)* C3 RAM banking supported if both SRAMs are fitted
* easy to assemble, all through-hole components
Status: Abandoned in active developmentfavor of the iRAM/640 which uses the exact same components but offers more total memory.
=== CPC iRAM/512 ===
Status: currently on halt as CPC iRAM/1024 will fit into all 464s and 664s and is more flexible
[[Category:Hardware]] [[Category:Memory expansions]]
