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=== Memory Map === The 64 KB 8085 address space is split into '''four 16 KB segments'''. Even segments (0x0000, 0x8000) are fixed; odd segments (0x4000, 0xC000) are paged through a '''74LS670 page register''' (4 bits wide, giving 16 pages of 16 KB). Lower half of the map is ROM; upper half is RAM; video memory begins at '''0x8200'''.<ref>Bits Passats.</ref> Theoretical maximum 272 KB ROM + 128 KB RAM addressable through banking; the firmware caps RAM at 128 KB.
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