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Add PS/2 Model 50 emulation.

Browse source 
This commit also adds basic MCA emulation.
This commit also adds emulation of the PS/2 Type 1 DMA controller.
This commit is contained in:
SarahW 2017-04-06 22:00:40 +01:00
commit 9c1d8e5022
29 changed files with 911 additions and 95 deletions
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35
src/keyboard_at.c
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@ -20,6 +20,8 @@
#define STAT_IFULL 0x02
#define STAT_OFULL 0x01
#define PS2_REFRESH_TIME (16 * TIMER_USEC)
struct
{
int initialised;
@ -41,6 +43,11 @@ struct
void (*mouse_write)(uint8_t val, void *p);
void *mouse_p;
int refresh_time;
int refresh;
int is_ps2;
} keyboard_at;
static uint8_t key_ctrl_queue[16];
@ -448,9 +455,18 @@ uint8_t keyboard_at_read(uint16_t port, void *priv)
keyboard_at.last_irq = 0;
break;
case 0x61:
if (ppispeakon) return (ppi.pb&~0xC0)|0x20;
return ppi.pb&~0xe0;
case 0x61:
temp = ppi.pb & ~0xe0;
if (ppispeakon)
temp |= 0x20;
if (keyboard_at.is_ps2)
{
if (keyboard_at.refresh)
temp |= 0x10;
else
temp &= ~0x10;
}
break;
case 0x64:
temp = keyboard_at.status & ~4;
@ -479,6 +495,12 @@ void keyboard_at_reset()
keyboard_scan = 1;
}
static void at_refresh(void *p)
{
keyboard_at.refresh = !keyboard_at.refresh;
keyboard_at.refresh_time += PS2_REFRESH_TIME;
}
void keyboard_at_init()
{
//return;
@ -488,6 +510,7 @@ void keyboard_at_init()
keyboard_poll = keyboard_at_poll;
keyboard_at.mouse_write = NULL;
keyboard_at.mouse_p = NULL;
keyboard_at.is_ps2 = 0;
timer_add(keyboard_at_poll, &keybsenddelay, TIMER_ALWAYS_ENABLED, NULL);
}
@ -497,3 +520,9 @@ void keyboard_at_set_mouse(void (*mouse_write)(uint8_t val, void *p), void *p)
keyboard_at.mouse_write = mouse_write;
keyboard_at.mouse_p = p;
}
void keyboard_at_init_ps2()
{
timer_add(at_refresh, &keyboard_at.refresh_time, TIMER_ALWAYS_ENABLED, NULL);
keyboard_at.is_ps2 = 1;
}