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some changes in the extend keyhandling

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Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@2108
This commit is contained in:
Peter Veenstra 2005-02-13 13:06:44 +00:00
parent 4e7c410647
commit 6bb1e22bf0
1 changed files with 11 additions and 6 deletions
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17
src/ints/bios_keyboard.cpp
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@ -377,29 +377,34 @@ irq1_return:
}
static Bitu INT16_Handler(void) {
Bit16u temp;
Bit16u temp;
bool extended = false; //accept extended keycodes (call 0x10 0x11)
switch (reg_ah) {
case 0x10: /* GET KEYSTROKE (extended) */
extended = true; /* Fallthrough */
case 0x00: /* GET KEYSTROKE */
case 0x10:
//Officially: the non extended version should skip all extended keys.
//For improved compatibility: clear the extended part (0xe0)
{
//TODO find a more elegant way to do this
do {
//TODO find a more elegant way to do this
temp=get_key();
if (temp==0) { CALLBACK_Idle();};
} while (temp==0);
reg_ax=temp;
if(reg_al==0xe0) reg_al=0; //extended key
if(!extended && reg_al==0xe0) reg_al=0; //no extended
break;
}
case 0x11: /* CHECK FOR KEYSTROKE (extended) */
extended = true; /* Fallthrough */
case 0x01: /* CHECK FOR KEYSTROKE */
case 0x11:
temp=check_key();
if (temp==0) {
CALLBACK_SZF(true);
} else {
CALLBACK_SZF(false);
reg_ax=temp;
if(reg_al==0xe0) reg_al=0; //extended key
if(!extended && reg_al==0xe0) reg_al=0; //no extended
}
break;
case 0x02: /* GET SHIFT FlAGS */