Changeset 82113 in vbox for trunk/src/VBox/Devices/Graphics/BIOS/vgabios.c

Timestamp:

Nov 22, 2019 11:02:50 PM (5 years ago)

Author:

vboxsync

Message:

VGABIOS: Fixed read pixel function (INT 10h/0Dh) in CGA graphics modes.

File:

• trunk/src/VBox/Devices/Graphics/BIOS/vgabios.c (modified) (1 diff)

trunk/src/VBox/Devices/Graphics/BIOS/vgabios.c

@@ -446 +446 @@
         break;
     case CGA:
-        addr = (col >> 2) + (row >> 1) * 80;
+        addr = (col >> (4 - vga_modes[line].pixbits)) + (row >> 1) * 80;
         if (row & 1)
             addr += 0x2000;