joncampbell123/dosbox-x
1
0
Fork 0
mirror of https://github.com/joncampbell123/dosbox-x.git synced 2025-05-09 03:41:10 +08:00
Code Issues Packages Projects Releases Wiki Activity

Fix BIOS switches field. Even though switch bits are inverted, the meaning of the bits read still carry the defined values. Fixes "RISK"

Browse Source
This commit is contained in:
Jonathan Campbell 2025-01-15 16:41:53 -08:00
parent c6c6461aa3
commit ee24e6f708
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
src/ints/int10.cpp
View File

@ -1265,7 +1265,7 @@ static void INT10_Seg40Init(void) {
// [http://hackipedia.org/browse.cgi/Computer/Platform/PC%2c%20IBM%20compatible/Video/EGA/IBM/IBM%20Enhanced%20Graphics%20Adapter%20%281984%2d08%2d02%29%2epdf]
//
// Anything else is not valid.
real_writeb(BIOSMEM_SEG,BIOSMEM_SWITCHES,0xFF^((!IS_VGA_ARCH && ega200)?0x7:0x9));
real_writeb(BIOSMEM_SEG,BIOSMEM_SWITCHES,0xF0 | ((!IS_VGA_ARCH && ega200)?0x7:0x9));
// Set the pointer to video save pointer table
real_writed(BIOSMEM_SEG, BIOSMEM_VS_POINTER, int10.rom.video_save_pointers);
}