[comp.sys.ibm.pc.hardware] Wanted: info about MCGA

psh@world.std.com (Peter Stephen Heitman) (01/03/91)

I am looking for information about MCGA, the monochrome version of VGA.
What is it? How is it different from VGA? Does it support CGA? Do I need a
special monochrome monitor to run this or can I use the monitor I have for
monochrome EGA?  How much would a typical MCGA board run?  How much would a 
typical monochrome monitor run?

Thanks, Peter Heitman

dgil@pa.reuter.COM (Dave Gillett) (01/05/91)

In <PSH.91Jan2150419@world.std.com> psh@world.std.com (Peter Stephen Heitman) writes:

>I am looking for information about MCGA, the monochrome version of VGA.
                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
     Wrong.  VGA is available in mono and colour (same video, different
monitor); the "C" in "MCGA" is for "Color" (or "Colour" in English).  It was
introduced on low-end PS/2s at the same time as VGA was introduced on the
high end.

>What is it? How is it different from VGA? Does it support CGA? Do I need a
                                           ^^^^^^^^^^^^^^^^^^^^
     Yes.  Practically all inexpensive PC graphics standards include CGA.

>special monochrome monitor to run this or can I use the monitor I have for
         ^^^^^^^^^^
     No.  See first answer.

>monochrome EGA?  How much would a typical MCGA board run?  How much would a 
                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
     IBM builds it in on the motherboard of their AT-bus PS/2 models.  I've
never seen a board from anybody else that supported it.

>typical monochrome monitor run?

       If you've already got EGA, that's better than MCGA.  You might consider
going from monochrome to colour, but MCGA (assuming you could find a board)
would be a backward step.

       Wilton's "Programmer's Guide to IBM PC and PS/2 Video Systems" includes
MCGA and clearly explains what each standard is capable of.  It might be a
bit more technical than you want, though.
                                                     Dave