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Merge pull request #3018 from Allofich/pcjr

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Set DS to 0x40 before calling INT 9 in PCjr
This commit is contained in:
Jonathan Campbell
2021-10-29 23:19:04 -07:00
committed by GitHub
parent f38fcef0f7 7d2f14f564
commit b636cde5e5
1 changed files with 7 additions and 3 deletions
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10
src/ints/bios_keyboard.cpp
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@@ -1469,9 +1469,13 @@ void BIOS_SetupKeyboard(void) {
* a+4 = iret (1 bytes) */
phys_writeb(a+5,0x50); /* push ax */
phys_writew(a+6,0x60E4); /* in al,60h */
phys_writew(a+8,0x09CD); /* int 9h */
phys_writeb(a+10,0x58); /* pop ax */
phys_writew(a+11,0x00EB + ((256-13)<<8)); /* jmp a+0 */
phys_writeb(a+8,0x1e); /* push ds */
phys_writew(a+9,0x406a); /* push 0x0040 */
phys_writeb(a+11,0x1f); /* pop ds */
phys_writew(a+12,0x09CD); /* int 9h */
phys_writeb(a+14,0x1f); /* pop ds */
phys_writeb(a+15,0x58); /* pop ax */
phys_writew(a+16,0x00EB + ((256-18)<<8)); /* jmp a+0 */
}
if (IS_PC98_ARCH) {