Uses I/O ports: [[I/O_Port_Summary|#1C00]] and [[I/O_Port_Summary|#1F00]]
#1C00 and #1F00 are bad decodings of port #BC00 and #BF00 the ports used by the CRTC.
These ports will clash with other hardware.
The Lightpen uses the CRTC /LPEN input on the expansion port.
== dk'Tronics lightpen artpackage screenshots ==