Sharp MZ-5500 Tehnical Manual page 102

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As shown above, it is possible to have multiple number of windows in one
window area of the mapping RAM. But, any desired*area m?y
Hot
be specified
as the v.dndow set in this manner i8 on the , corresponding · loeation on the
VRAM as it is addressed by the same VMA.
WDC initialization
The WDC needs the following prior to sending of the START eomrnand.
1) All clear of the rnapping RAH.
2) Setup of the rnapping 'RAH , priority, VMA, and VDS für the screen to be
displayed first.
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