dab@briar.philips.com (David Bryan;6247;3.25;$0201) (01/11/90)
I have a Compaq 386/33 MHz machine with something called a Compaq Video Graphics Monitor, which is definitely some kind of VGA. The main application program that I run calls for me to specify whether my display is an "IBM VGA mode 12 color display" or an "IBM VGA mode 13 color display". Is my Compaq display equivalent to either of these IBM types ? By the way, I have asked Compaq but they can't (or won't) say. Please e-mail replies to me if possible. Thanks. Dave Bryan dab@philabs.philips.com !uunet!philabs!dab (914)945-6247
scotts@cpqhou.UUCP (Scott Shaffer) (01/12/90)
In article <73211@philabs.Philips.Com>, dab@briar.philips.com (David Bryan;6247;3.25;$0201) writes: > I have a Compaq 386/33 MHz machine with something called a Compaq Video > Graphics Monitor, which is definitely some kind of VGA. The main > application program that I run calls for me to specify whether my display > is an "IBM VGA mode 12 color display" or an "IBM VGA mode 13 color display". > Is my Compaq display equivalent to either of these IBM types ? By the way, > I have asked Compaq but they can't (or won't) say. Please e-mail replies > to me if possible. Thanks. > In its quest for producing the most inovative products, IBM has done a funny thing in the way of video adaptors in the PS/2. Yes IBM improved the EGA standard with VGA, but they just couldn't resist screwing with things a little. In the high class PS/2s, a full blown VGA was included. In the cheaper models, MCGA was introduced. A full blown VGA can support ALL video modes from 0h to 13h. An MCGA can't. The COMPAQ VGA is a full blown VGA and thus supports all standard VGA modes (no 800x600 or anything). The modes go like this: 0-6 : old CGA modes (640x200 & 320x200) 7 : monochrome (720x350) 8-10: EGA added modes (640x350) 10-13: VGA added modes (640x480 max) VGA added modes 11 - 640x480 2 color 12 - 640x480 16 color 13 - 320x200 256 color So, in your case, you can select either. Selecting mode 12 will get you increased resolution (and great text), but less colors. Selecting mode 13 will get you great colors, but poorer resolution. MCGA supports all of the CGA modes, plus the 320x200 256 color mode. I hope this clears things up. Scott Shaffer Compaq Computer Corp. (* The above opinions are mine, and nobody elses. *) BTW, who at Compaq wouldn't tell you? Did you ask Compaq or your dealer?
scotts@cpqhou.UUCP (Scott Shaffer) (01/12/90)
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leonard@bucket.UUCP (Leonard Erickson) (01/14/90)
dab@briar.philips.com (David Bryan;6247;3.25;$0201) writes: >I have a Compaq 386/33 MHz machine with something called a Compaq Video >Graphics Monitor, which is definitely some kind of VGA. The main >application program that I run calls for me to specify whether my display >is an "IBM VGA mode 12 color display" or an "IBM VGA mode 13 color display". The "IBM VGA mode 12 color display" and "IBM VGA mode 13 color display" aren't different types of monitors. They are different *display modes* Mode 12 is 640 x 480 x 16 colors Mode 13 is 320 x 200 x 256 colors In short, the program is asking (badly!) what *resolution* you want it to use on the display!! *ANY* color VGA monitor can display either. -- Leonard Erickson ...!tektronix!reed!percival!bucket!leonard CIS: [70465,203] "I'm all in favor of keeping dangerous weapons out of the hands of fools. Let's start with typewriters." -- Solomon Short