=== 8 bit Printer Port in CPC Plus ===
In the CPC Plus, Bit 3 of [[CRTC]] Register 0Ch can be used as eighth printer bit. For compatibility to normal CPCs, this feature can be disabled by removing the 10 kOhm resistor R30 on the mainboard (aka R130 in the schematic). See [[LK Links]] for more info. Although the 8 th 8th bit is a built-in feature, the CPC Plus BIOS BASIC/OS doesn't support it. However the 8 bit printer port of the CPC Plus is supported by [[FutureOS]].
== External Printer Ports ==