25 Feb
2007
25 Feb
'07
5:07 p.m.
Tony Duell wrote:
And the modification works on PCjr parallel printer sidecars too:
http://www.brutman.com/PCjr/parallel_port.html
Mike
The MDA port
can also be reconfigured as bidirectional, but IIRC,
it's a cut trace and a jumper. I did that with one and ran it until
Sure. As can a lot of the clone printer cards. The mod is to disconnect
the OE/ pin of the data latch ('374) from ground and to connect it to the
bit 5 (?) output of the control port (nearly always a '174, and nearly
always the input of this section is already wired to the D5 line from the
ISA bus).