RAM The '''Memory Expansions by Expansion''' and '''Silicon Disc''' from [[Dk'tronics]]both contain expansion RAM, the latter one additionally contains a ROM.
== Description ==
=== Memory Expansions === [[Dk'tronics]] produced 2 different memory expansionsMemory Expansions, a 64K and a 256K which were compatible with all (non Plus) CPCs.
The expansions meant that CP/M Plus and CP/M 2.2 (with the use of a utility supplied) could both access a 'massive' 61K TPA.
The available memory could === Silicon Discs === These were intended to be switched used as RAM disc, made in 64K and out of the Z80 64K address block in banks of 16K using either RSX (bar) commands within basic or within an assembly code program256K versions, too.
== Technical ==