[net.micro.pc] A 9600 baud qury.

bcase (03/31/83)

#R:uiucdcs:24700011:uiucdcs:24700012:000:106
uiucdcs!bcase    Mar 30 16:03:00 1983

I find it HARD to beleive that it could be the display's fault.  I mean,
come on, really, was he serious?

bcase (03/31/83)

#R:uiucdcs:24700011:uiucdcs:24700013:000:24
uiucdcs!bcase    Mar 30 20:37:00 1983

Oh.  I stand corrected.

donchin (03/31/83)

#R:uiucdcs:24700011:uiucdcs:24700014:000:269
uiucdcs!donchin    Mar 30 21:54:00 1983

I should add that we tried running XTALK at 9600, 4800 and 2400 baud
and the only speed at which the display kept up was 2400. The fault
is not at the Harris side as it supports many terminals at 9600.

The symptoms at 9600 are  missing characters, unfilled lines etc.

preece (03/31/83)

#R:uiucdcs:24700011:uicsl:7300005:000:668
uicsl!preece    Mar 30 17:05:00 1983

The GRAPHICS display does have a speed problem (but not due
to character generation). The stock text display routines
(in the BIOS) wait for the vertical blanking time before
displaying a character. This drastically limits the display
speed, but avoids display tearing and snow. Some terminal
programs avoid the BIOS routines and write characters directly
into the graphic display's memory. This is much faster, but
there is some ugly visual static while characters are being
written to the screen.

My understanding was that the monochrome display avoided this
problem (maybe only if you go around the BIOS routines).

scott e preece
uiuc - coordinated science lab