[[File:Amstrad6128.jed]] Original JED File posted on CPCWiki Forum
== PAL MMR register ==
This register controls how the extended RAM is banked into the CPU address space.
{|{{Prettytable|width: 700px; font-size: 2em;}}
|colspan=2|'''MMR'''||colspan=3|'''64K page'''||'''S'''||colspan=2|'''MM'''||colspan=4 style="text-align: center;"|'''CPU Memory Mapping'''
|-
|'''7'''
|'''6'''
|'''5'''
|'''4'''
|'''3'''
|'''2'''
|'''1'''
|'''0'''
|style="text-align: center;"|'''&0000-&3fff'''
|style="text-align: center;"|'''&4000-&7fff'''
|style="text-align: center;"|'''&8000-&bfff'''
|style="text-align: center;"|'''&c000-&ffff'''
|-
|1
|1
|colspan=3 style="text-align: center;"|x
|0
|0
|0
|Base 64k / Bank 0
|Base 64k / Bank 1
|Base 64k / Bank 2
|Base 64k / Bank 3
|-
|1
|1
|colspan=3 style="text-align: center;"|p
|0
|0
|1
|Base 64k / Bank 0
|Base 64k / Bank 1
|Base 64k / Bank 2
|'''Page p / Bank 3'''
|-
|1
|1
|colspan=3 style="text-align: center;"|p
|0
|1
|0
|'''Page p / Bank 0'''
|'''Page p / Bank 1'''
|'''Page p / Bank 2'''
|'''Page p / Bank 3'''
|-
|1
|1
|colspan=3 style="text-align: center;"|p
|0
|1
|1
|Base 64k / Bank 0
|'''Base 64k / Bank 3'''
|Base 64k / Bank 2
|'''Page p / Bank 3'''
|-
|1
|1
|colspan=3 style="text-align: center;"|p
|1
|colspan=2 style="text-align: center;"|b
|Base 64k / Bank 0
|'''Page p / Bank b'''
|Base 64k / Bank 2
|Base 64k / Bank 3
|}
== PAL I/O port ==