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Improvements to PS/2 mouse emulation.

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This commit is contained in:
TomW 2015-06-21 15:34:27 +01:00
commit 0bf3e231e5
3 changed files with 41 additions and 30 deletions
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65
src/keyboard_at.c
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@ -52,48 +52,52 @@ int mouse_queue_start = 0, mouse_queue_end = 0;
void keyboard_at_poll()
{
keybsenddelay += (1000 * TIMER_USEC);
if (keyboard_at.out_new != -1)
if (keyboard_at.out_new != -1 && !keyboard_at.last_irq)
{
keyboard_at.wantirq = 0;
if (keyboard_at.mem[0] & 0x01)
picint(2);
keyboard_at.out = keyboard_at.out_new;
keyboard_at.out_new = -1;
keyboard_at.status |= STAT_OFULL;
keyboard_at.status &= ~STAT_IFULL;
// pclog("keyboard_at : take IRQ\n");
keyboard_at.last_irq = 2;
if (keyboard_at.out_new & 0x100)
{
if (keyboard_at.mem[0] & 0x02)
picint(0x1000);
keyboard_at.out = keyboard_at.out_new & 0xff;
keyboard_at.out_new = -1;
keyboard_at.status |= STAT_OFULL;
keyboard_at.status &= ~STAT_IFULL;
keyboard_at.status |= STAT_MFULL;
// pclog("keyboard_at : take IRQ12\n");
keyboard_at.last_irq = 0x1000;
}
else
{
if (keyboard_at.mem[0] & 0x01)
picint(2);
keyboard_at.out = keyboard_at.out_new;
keyboard_at.out_new = -1;
keyboard_at.status |= STAT_OFULL;
keyboard_at.status &= ~STAT_IFULL;
keyboard_at.status &= ~STAT_MFULL;
// pclog("keyboard_at : take IRQ1\n");
keyboard_at.last_irq = 2;
}
}
else if (keyboard_at.wantirq12)
{
keyboard_at.wantirq12 = 0;
picint(0x1000);
// pclog("keyboard_at : take IRQ 12\n");
keyboard_at.last_irq = 0x1000;
}
if (!(keyboard_at.status & STAT_OFULL) && !(keyboard_at.mem[0] & 0x10) &&
if (!(keyboard_at.status & STAT_OFULL) && keyboard_at.out_new == -1 && /*!(keyboard_at.mem[0] & 0x20) &&*/
mouse_queue_start != mouse_queue_end)
{
// pclog("Reading %02X from the mouse queue at %i\n", keyboard_at.out, key_queue_start);
keyboard_at.out = mouse_queue[mouse_queue_start];
keyboard_at.out_new = mouse_queue[mouse_queue_start] | 0x100;
mouse_queue_start = (mouse_queue_start + 1) & 0xf;
keyboard_at.status |= STAT_OFULL | STAT_MFULL;
keyboard_at.status &= ~STAT_IFULL;
if (keyboard_at.mem[0] & 0x02)
keyboard_at.wantirq12 = 1;
}
else if (!(keyboard_at.status & STAT_OFULL) && keyboard_at.out_new == -1 &&
!(keyboard_at.mem[0] & 0x10) && key_queue_start != key_queue_end)
{
keyboard_at.out_new = key_queue[key_queue_start];
// pclog("Reading %02X from the key queue at %i\n", keyboard_at.out, key_queue_start);
key_queue_start = (key_queue_start + 1) & 0xf;
}
else if (keyboard_at.out_new == -1 && !(keyboard_at.status & STAT_OFULL) &&
key_ctrl_queue_start != key_ctrl_queue_end)
{
keyboard_at.out_new = key_ctrl_queue[key_ctrl_queue_start];
// pclog("Reading %02X from the key ctrl_queue at %i\n", keyboard_at.out, key_ctrl_queue_start);
key_ctrl_queue_start = (key_ctrl_queue_start + 1) & 0xf;
}
}
@ -168,6 +172,7 @@ void keyboard_at_write(uint16_t port, uint8_t val, void *priv)
keyboard_at.wantirq = 1;
if (!(val & 1) && keyboard_at.wantirq)
keyboard_at.wantirq = 0;
mouse_scan = !(val & 0x20);
}
break;
@ -318,6 +323,7 @@ void keyboard_at_write(uint16_t port, uint8_t val, void *priv)
break;
case 0xa7: /*Disable mouse port*/
mouse_scan = 0;
break;
case 0xa9: /*Test mouse port*/
@ -349,7 +355,7 @@ void keyboard_at_write(uint16_t port, uint8_t val, void *priv)
break;
case 0xc0: /*Read input port*/
keyboard_at_adddata(keyboard_at.input_port);
keyboard_at_adddata(keyboard_at.input_port | 4);
keyboard_at.input_port = ((keyboard_at.input_port + 1) & 3) | (keyboard_at.input_port & 0xfc);
break;
@ -415,19 +421,18 @@ uint8_t keyboard_at_read(uint16_t port, void *priv)
{
case 0x60:
temp = keyboard_at.out;
keyboard_at.status &= ~(STAT_OFULL | STAT_MFULL);
keyboard_at.status &= ~(STAT_OFULL/* | STAT_MFULL*/);
picintc(keyboard_at.last_irq);
keyboard_at.last_irq = 0;
break;
case 0x61:
if (ppispeakon) return (ppi.pb&~0xC0)|0x20;
return ppi.pb&~0xC0;
break;
return ppi.pb&~0xe0;
case 0x64:
temp = keyboard_at.status;
keyboard_at.status &= ~(STAT_RTIMEOUT | STAT_TTIMEOUT);
keyboard_at.status &= ~(STAT_RTIMEOUT/* | STAT_TTIMEOUT*/);
break;
}
// if (port != 0x61) pclog("%02X %08X\n", temp, rammask);