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/* ASIC ROM numbering system */
Logical ROMs can be replaced by using a [[ROMboard]] while physical ROMs cannot be replaced.
=== Summary ===
On Amstrad CPC, there is only 1 lower rom, the firmware, and up to 256 upper roms.
On Amstrad Plus, each cartridge contains up to 32 physical roms.
The first 8 physical roms can be accessed as lower roms. And all the 32 physical roms can be accessed as upper roms.
ROM boards are seen as logical roms. They can be accessed only as upper roms and there can be up to 128 logical roms.
[[Category:Programming]][[Category:Memory expansions]][[Category:Peripherals]][[Category:CPC Internal Components]]
