Hardware:Memory Map
From Motorola 68000 Homebrew Computer Project
The 16MB of address space will be broken up into 8 2MB chunks by a 74LS138 3-to-8 decoder.
0MB: 0x00000000 - 0x000FFFFF ROM 1 MB 1MB: 0x00100000 - 0x001FFFFF Reserved 1 MB, possible future use for more memory mapped I/O or VRAM, etc. 2MB: 0x00200000 - 0x003FFFFF Memory Mapped I/O 2 MB 4MB: 0x00400000 - 0x00FFFFFF Static RAM 12 MB
Memory mapped I/O area from 0x00200000 - 0x003FFFFF will be broken down with another 74LS138 into 8 256KB chunks or maybe with a 4-to-16 decoder for 16 chunks.
