18 Jun
2004
18 Jun
'04
8:28 a.m.
Hi,
ard(a)p850ug1.demon.co.uk (Tony Duell) said:
Why not just output a suitable value on the
parallel port (which has 12 output lines IIRC) to directly drive the LEDs
That's pretty much how the display for the E11 PDP-11 emulator works.
It drives 8 LEDs when /STROBE is asserted and another 8 when /INIT is
asserted. This gives a 16-LED display by switching radidly between the
2 sets of LEDs. I have the lights fitted in a spare disk blanking plate
on the front of my 486 "fake" PDP-11.
--
Cheers,
Stan Barr stanb(a)dial.pipex.com
The future was never like this!