8 Sep
2002
8 Sep
'02
9:40 a.m.
Tony Duell wrote:
Just BTW, in
case anyone is interested in the "inner workings" of the 6845,
DP8350, 8275, 6545 or 5027 CRTCs, I've got a copy of Gerry Kane's "CRT
Controller Handbook" here. Anyone got a copy of the book mentioned on the
front cover, "An Introduction to Microcomputers: Volume 3 - Some Real
Support Devices"?
Also, has anyone got a timing diagram of the sync signal a Microvitec Cub
653 (as used with the BBC Micro) requires or a BBC Micro generates? I'm
specifically interested in the pulse width of the Hsync and Vsync parts of
the Csync signal and the high pulse width (visible area).
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
What really
sucked was the 32 column screen. I never bought one of
the many 80 column cards, they were all serial based. Only useful
under OS-9.
Eh? The 80 column modules I read about (I never had one) contained a
6845 CTRC, RAM, and a bit of logic. Nothing to do with a serial port.