[comp.sys.ibm.pc] CGA character ROM format

wcurtiss@x102c.harris-atd.com (Curtiss WC 67625) (05/04/90)

The project I'm working on needs to change a few of the characters in the
CGA charater ROM.  Actually doing it is no problem, since the vendor of
the machine has granted us permission and we have the facilities.  Why don't
we have the vendor do it?  Well, the person who designed their CGA board has
left the company and took everything with them.  Since they are now pushing
VGA, they don't want to reverse engineer the CGA product.  For our particular
application, though, we can only use CGA, EGA or VGA won't cut it.  Can
anyone point me to a reference which would give the format of a CGA character
ROM (I realize it might vary from vendor to vendor) or provide the information
directly?  As a note: my quess is its just the bitmap of the characters in
order, but disassembly is expense, so before we try some quesses, I thought I
would ask.

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William Curtiss         407/984-6383            | - Standard disclamers apply -
Harris GISD, Melbourne, FL  32902               |
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