>>>>> "Tony" == Tony Duell <ard_at_p850ug1.demon.co.uk> writes:
Tony> It's normally not too hard to modify the vertical scan rate
Tony> of a monitor (at least compared with doing a similar mod to
Tony> the horizontal side, which can be _very_ complex). Having a
Tony> schematic of the monitor helps a lot, though.
Tony> What monitor have you been using on your D'break?
I've been using a PAL mono monitor that I used with ZX
spectrum like machines. And modifying the scan rate was exactly what I
tried to do. I had a schematic of the monitor, all transistor, and
with careful twiddling of some resistors and capacitors I was able to
change both sync rates (HSYNC is more dangerous since it is coupled
with the fly-back converter that generates all those high voltages
needed to make electrons move).
Cheers,
--
*** Rodrigo Martins de Matos Ventura <yoda_at_isr.ist.utl.pt>
*** Web page: http://www.isr.ist.utl.pt/~yoda
*** Teaching Assistant and PhD Student at ISR:
*** Instituto de Sistemas e Robotica, Polo de Lisboa
*** Instituto Superior Tecnico, Lisboa, PORTUGAL
*** PGP fingerprint = 0119 AD13 9EEE 264A 3F10 31D3 89B3 C6C4 60C6 4585
Received on Fri Jul 14 2000 - 04:24:52 BST