1/0 Map - Sharp MZ-5500 Tehnical Manual

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2-2. 1/0 map
1) MZ-5500/5600 1/0 map
For 1/0 of the MZ-5500, it needs 0 wait for accessing of 0 to IFFH, 3 waits
for 200 - 37FH, for which the ready signal is automatically created in the
HZ-5500. Where noted "byte access" in the 1/0 indicates connection to the
8-bit bus. Where noted "reserved" 1S the area reserved by the system.
For the MZ-5600, the 1/0 map is basical.ly the same as the MZ-5500, but, 1
wait is inserted for the area 0 - IFFH only in the 8MHz · mode. See Table
2-2 for the 1/0 bit map.
ii) 1/0 user area
For both theMZ-5500 and MZ-5600, three areas of 180 - lAFH [0 wait
(5MHz)/1 wait .(8MHz)], 300 - 33FH (3 waits), and 3CO - 3FFH
~)
are open
for user's use.
In the 8MHz mode of the MZ-5600, 1 wait i8 nutomatically inserted when XACK
is returned in the 0 wait timing.
If XACK is not returned within 130ps, CP/M initiates bootstrapping.
For practical examples of the 1/0 user aren usage, refer to the paragraph
discussjng the expa~sion slot.
2.1