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ZX Spectrum 128

552 bytes added, 06:05, 19 November 2012
m
Paging
|}
<!-- end of memory map -->
 
Paging is controlled by performing I/O writes to ports 0x7ffd.
 
The bits are described in the table below:
{| class="wikitable" style="text-align: center;"
|-
! rowspan="2" style="width: 5em;" | Port
! colspan="8" | Bit
|-
! style="width: 5em;" | 7
! style="width: 5em;" | 6
! style="width: 5em;" | 5
! style="width: 5em;" | 4
! style="width: 5em;" | 3
! style="width: 5em;" | 2
! style="width: 5em;" | 1
! style="width: 5em;" | 0
|- style="height: 5em;"
! 0x7ffd
| || || Disable Paging || ROM low || Active Screen || colspan="3" | RAM Bank
|}
==Keypad==

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