18 Dec
2007
18 Dec
'07
5:37 p.m.
Hi,
As far as I know there are no **STANDARD** PC text video modes
that give 132 columns.
Precisely, just what is so difficult about that statement for people on this
list to understand!!??
The bottom line is that the **ONLY** ***STANDARD*** text modes supported by
EGA and VGA adapters are 40 and 80 column. END OF ARGUMENT. PERIOD.
Whilst it is perfectly true that most/all "SuperVGA" cards support one or
more 132 column text modes, these modes - along with their mode numbers -
are unique to each manufacturer and indeed often differ between chipsets
Not likely - as far as I know there are no standard PC
text
video modes that give 132 columns.
Long ago I had a 132char driver for the Hercules/TTL mono video
card. I was based on the 720x348 mono graphics mode. from the same manufacturer!
Great if you want to tie your software to working with only a single brand
of chipset/graphics card (which I doubt is what the OP wants), but otherwise
utterly useless....
TTFN - Pete.
18 Dec
18 Dec
9:26 p.m.
Ensor wrote:
The bottom line is that the **ONLY** ***STANDARD***
text modes supported
by EGA and VGA adapters are 40 and 80 column. END OF ARGUMENT. PERIOD.
Actually, the number of columns is arbitrary. You can adjust overscan
frequencies to get more columns and rows if you really want to, and all
without threatening to release the magic smoke. On a stock IBM CGA with
stock 5153 color monitor, I can produce a 90x30 text mode that fills to
the borders, perfectly stable, perfectly within timings, without distortion.
Even without "cheating" in that way, it is easy for EGA to do 43 lines
and VGA to do 50, and
Whilst it is perfectly true that most/all
"SuperVGA" cards support one
or more 132 column text modes, these modes - along with their mode
numbers - are unique to each manufacturer and indeed often differ
between chipsets from the same manufacturer!
Yes, that's what VESA BIOS extensions -- available on most cards since
1990 -- are for. See my prior post with details. While it is a stretch
that Dave be asked to support every single chipset, it is quite
reasonable to go after VESA BIOS calls since most SVGA cards support
them. This is a problem that was solved 15 years ago.
--
Jim Leonard (trixter at oldskool.org) http://www.oldskool.org/
Help our electronic games project: http://www.mobygames.com/
Or check out some trippy MindCandy at http://www.mindcandydvd.com/
A child borne of the home computer wars: http://trixter.wordpress.com/
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