Changes
/* I/O Port Mapping */
|Printer port||&EF||Write Only||-||-||-||0||-||-||-||-
|-
|8255 PPIPort A||&F4-&F7||Read/Write||-||-||-||-||0||-||r10||r00
|-
|Expansion devicesPPI Port B||&F5||Read/Write||-||-||-||-||0||-||0||1|-|PPI Port C||&F6||Read/Write||-||-||-||-||0||-||1||0|-|PPI Control||&F7||Read/Write||-||-||-||-||0||-||1||1|-|FDC||&F8-&FB||Read/Write||-||-||-||-||-||0||-||-
|}
