INT13 Get drive parameter return status should use AH instead of AX \ VOGONS

INT13 Get drive parameter return status should use AH instead of AX

Topic actions

First post, by danoon

Posted on 2012-10-19, 22:28

danoon Offline

Rank Member

Rank: Member
Posts: 232
Joined: 2011-01-04, 19:12

bios_disk.c

1static Bitu INT13_DiskHandler(void) {
2...
3         case 0x08: /* Get drive parameters */
4		if(driveInactive(drivenum)) {
5			last_status = 0x07;
6			reg_ah = last_status;
7			CALLBACK_SCF(true);
8			return CBRET_NONE;
9		}
10		reg_ax = 0x00;
11		reg_bl = imageDiskList[drivenum]->GetBiosType();

Looking at specs, and the other cases in int13, I believe reg_ax = 0x00 should be reg_ah = 0x00

This doesn't fix any bugs that I know of, but I was looking around this part of the code and noticed it.

Go to top of page Go to top of page

Back to DOSBox Development