Sharp MZ-5500 - Page 22

2. Memory
2-1. MZ-5500/5600 memory and memory mup
Fig.2-1 . shows the memory map of the MZ-5500/5600.
For the memory, it is possible to expand the system RAH up to 512KB. 128KB
is equipped standard for the HZ-551l and 256KB for the MZ-5521 and MZ-5600
series.
For memory expansion, such as MZ-IR16 Expansion DRAM and the MZ-IRII
Expansion RAM Board are available.
In regard to the VRAM, 96KB is standard for the MZ-5500/5600 series, whjch
can be expanded 96KB more by the use of the MZ-IR09 option.
16KB of tlie ROM is used for IPL (Initial Program Loader) which js used to
initialize the system and load CP/M loader.
Since the CRT display 1s performed by the bit map method with the
MZ-5500/5600, it does not use the ce ROM, but character patterns are
mor
contained in the IPL ROM.
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