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OS/2 Shareware BBS: 8 Other
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08-Other.zip
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font20.zip
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dos.txt
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1999-08-09
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36 lines
fast start for DOS ...
what SVGA card do you have ?
driver file documenation file
a) ET4000: F20_ET40.COM F20_ET40.TXT
b) S3 Trio32: F20_S3TR.COM F20_S3TR.TXT
c) other: F20_SVGA.COM F20_SVGA.TXT
textmode 3 (80*25) is usually 720 pixels wide (80*9=720)
and 400 pixels high (25*16=400).
most newer monitors are "optimized" for 640*480 or better
and look very ugly in 720*400: there is space between the lines
720/400=1.80
640/480=1.33
800/600=1.33
1024/768=1.33
this program changes mode 3 to 720*500 (20*25=500)
720/500=1.44
most programs call the video BIOS to set an
* 8x16 font but really want to set 25 lines, font20 loads 8x20 font
* 8x14 28 8x18
* 8x8 50 8x10
now you can read the text in 80*50 mode...
The default refresh rate for text mode on VGA displays is 70 Hz
because of the change from 400 to 500 lines it would drop to 56 Hz
wich is is not acceptable. To gain better refresh rate the Font20 program
must also select another video clock. Look into the F20_????.TXT files
what clocks are availabe for different SVGA chips.