Memory Map
The 64 KiB addressable by the Z80 processor are divided in four banks of 16 KiB each. The maximum memory of 4 MiB for the system is also divided in 256 segments of 16 KiB each. The hardware can map any of the 16 KiB blocks to any of the four banks. The first 512 KiB are reserved for ROM; the next 512 KiB are reserved for internal RAM. The next 3 MiB are assigned to each one of the three memory slots.
Read more about this topic: Cambridge Z88
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