== Compatibility ==
So far no No incompatibilities have been reportedso far.
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.
Unlike other RAM expansions the iRAM can be used in parallel to an external RAM expansion. The iRAM has priority over external RAM expansions and only requests above the iRAM memory limit will be passed to an external RAM expansion. External memory expansions that are smaller than the iRAM will be ignoredonce the iRAM is installed. This is particularly helpful for external feature-expansions that also provide a RAM expansion. Those expansions usually and cannot be connected used in parallel to another (bigger) RAM expansion. E.g. DDI-5/6, ULIFAC and Pico CPC limit the CPC to the RAM provided by those with other external expansions. A great use case is to put the ULIFAC in ROM board mode which replaces the full or parts of the expanded RAM with ROM slots - but with the iRAM installed the CPC still has access to the full RAM provided by the iRAM. If needed a disable switch can optionally be connected to disable the internal iRAM from outside the CPC without removing the iRAM.
== released ==