8 Sep
2002
8 Sep
'02
6:24 p.m.
Tony Duell wrote:
Csync is a particulary nasty signal to look at on most
small logic
analysers because it's got narrow pulses that are quite widely spaced.
I'd rather not use this unless I have to.
Fair enough.
What do you need to know?
Pulse width/frequency of Hsync and Vsync?
Timing between leading edges of Hsync and Vsync?
Timing between Hsync and start of video line?
All of those please.
Of course many of those can be controlled by software
on the 6845. I
assume you just want the default values for the Beeb. Do you want me
ot use a particular video MDOE?
MODE 7 would be OK. I need the timing info to
connect a Teletext i/f up to
the Cub, so MODE 7 (Teletext emulation) would be the logical choice.
Thanks.
--
Phil.
philpem(a)dsl.pipex.com
http://www.philpem.dsl.pipex.com/
PGP Key ID: 0x0E18C95F
PGP Key Fingerprint: 2741 5CB7 1D45 6F77 D1FC FA3D 7A87 2DA4 0E18 C95F