Date: Mon, 14 Feb 94 10:36:52 EST From: peprbv AT cfa0 DOT harvard DOT edu (Bob Babcock) To: pgf AT Cayman DOT COM Cc: djgpp AT sun DOT soe DOT clarkson DOT edu Subject: Re: get vga info: int 10, ah == 1b Reply-To: babcock AT cfa DOT harvard DOT edu > has anyone successfully used int 0x10, ah == 0x1b to get information > about the installed vga? i have what i sure think looks like good > code to do it, but it sure ain't workin'. and i'm pretty sick of it. Are you running in DPMI or VCPI mode? I see a use of 0xe0000000 in routine i_10 in exphdlr.c which is not protected by a check for dpmi mode. That's suspicious, but it is a suspicion based only on a quick look at the code. If you are using int86(0x10,... you might try using _go32_dpmi_simulate_int instead.