shearer@cis.udel.edu (Rob Shearer) (01/28/91)
First of all.. I would be interested in a copy of the .GL compiler/decompiler that someone was talking about ... is it FTPable?? or can you post it? Anyway, Got another question fer you guys... I have been playing around with different video modes for several different VGA cards (TEXT modes... not graphic...) One is an ATI VGA Wonder card, another is an unknown in a Decstation 333c, and another is another unknown in a Compaq Portable 286 SLT... Norton Commander can put each of these into a 80x50 mode that i would like to take advantage for... (the 2 386 machines can also do a 132x43 mode but I can't figure out if the Compaq is capable of that yet...) The question is... how can i get MY program to put the VGA card into 80x50 mode...?? I have looked at several different memory locations... I can have my program FIND the fact that it is 80x50 (I can even calculate the 50 lines based on scan lines...).. BUT INT 10 function 0x0f informs me I am in mode 0x03.. (80x25..) no matter what I do (unless I go to 132x43 mode). So, evidentatly all NCC is doing is changin the number of scan lines per char.. is that correct? I would like an example.... either pseudo code, "C" code, Pascal code, Assembly code, basic, ada... ANYTHING!... I am desperate! Thanks in Advance Robb Shearer shearer@sol.cis.udel.edu
ong@d.cs.okstate.edu (ONG ENG TENG) (01/29/91)
From article <42952@nigel.ee.udel.edu>, by shearer@cis.udel.edu (Rob Shearer): > The question is... how can i get MY program to put the VGA card into 80x50 > mode...?? I have looked at several different memory locations... I can > have my program FIND the fact that it is 80x50 (I can even calculate the 50 > lines based on scan lines...).. BUT INT 10 function 0x0f informs me I am in > mode 0x03.. (80x25..) no matter what I do (unless I go to 132x43 mode). > > So, evidentatly all NCC is doing is changin the number of scan lines per > char.. is that correct? > > I would like an example.... either pseudo code, "C" code, Pascal code, > Assembly code, basic, ada... ANYTHING!... I am desperate! You have to execute the following machine assembler sequence to get into 80x50 mode (or 80x43 on EGA cards): mov ax,1112h ; go into 80x50 mode sub bl,bl int 10h > > Thanks in Advance > Robb Shearer > shearer@sol.cis.udel.edu You are welcome. E. Teng Ong (ong@d.cs.okstate.edu)