Changes
8255
,/* PPI Port B */
* Bit5 bit is connected to /EXP signal on the expansion port.
** On the KC Compact this bit is used to define bit 7 of the printer data(see [[8bit Printer Ports]]).
** On the CPC, it is possible to use this bit to define bit 7 of the printer data, so a 8-bit printer port is made, with a hardware modification,
** On the CPC this can be used by a expansion device to report it's presence. "1" = device connected, "0" = device not connected. This is not always used by all expansion devices. ''is it used by any expansions?''
