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Correct Get Extended Shift States; Int 16 call 12 (thanks ripsaw).

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Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@3711
This commit is contained in:
Peter Veenstra 2011-05-11 11:06:36 +00:00
parent bf8496c092
commit 7f27714557
1 changed files with 4 additions and 2 deletions
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6
src/ints/bios_keyboard.cpp
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@ -565,8 +565,10 @@ static Bitu INT16_Handler(void) {
else reg_al=1;
break;
case 0x12: /* GET EXTENDED SHIFT STATES */
reg_al=mem_readb(BIOS_KEYBOARD_FLAGS1);
reg_ah=mem_readb(BIOS_KEYBOARD_FLAGS2);
reg_al = mem_readb(BIOS_KEYBOARD_FLAGS1);
reg_ah = (mem_readb(BIOS_KEYBOARD_FLAGS2)&0x73) |
((mem_readb(BIOS_KEYBOARD_FLAGS2)&4)<<5) | // SysReq pressed, bit 7
(mem_readb(BIOS_KEYBOARD_FLAGS3)&0x0c); // Right Ctrl/Alt pressed, bits 2,3
break;
case 0x55:
/* Weird call used by some dos apps */