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Split PIT timer from the counter CLOCK input handling, exposed a function to set a counter's CLOCK input, and implemented BCD mode.

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OBattler
2020-01-17 06:36:15 +01:00
parent 7bef50b782
commit 0f7699d037
2 changed files with 104 additions and 42 deletions
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13
src/pit.h
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@@ -9,10 +9,10 @@
* Header of the implementation of the Intel 8253/8254
* Programmable Interval Timer.
*
* Version: @(#)pit.h 1.0.0 2019/12/02
* Version: @(#)pit.h 1.0.1 2020/01/17
*
* Author: Miran Grca, <mgrca8@gmail.com>
* Copyright 2019 Miran Grca.
* Copyright 2019,2020 Miran Grca.
*/
#ifndef EMU_PIT_H
# define EMU_PIT_H
@@ -27,7 +27,7 @@ typedef struct {
int rm, wm, gate, out,
newcount, count, using_timer, latched,
state, null_count, do_read_status, pad1;
state, null_count, do_read_status, clock;
uint32_t l;
@@ -60,10 +60,17 @@ extern uint64_t PITCONST, ISACONST,
RTCCONST;
/* Gets a counter's count. */
extern uint16_t pit_ctr_get_count(ctr_t *ctr);
/* Sets a counter's load count handler. */
extern void pit_ctr_set_load_func(ctr_t *ctr, void (*func)(uint8_t new_m, int new_count));
/* Sets a counter's OUT output handler. */
extern void pit_ctr_set_out_func(ctr_t *ctr, void (*func)(int new_out, int old_out));
/* Sets a counter's GATE input. */
extern void pit_ctr_set_gate(ctr_t *ctr, int gate);
/* Sets a counter's CLOCK input. */
extern void pit_ctr_set_clock(ctr_t *ctr, int clock);
/* Sets if a counter's CLOCK input is from the timer or not - used by PCjr. */
extern void pit_ctr_set_using_timer(ctr_t *ctr, int using_timer);
extern pit_t * pit_common_init(int type, void (*out0)(int new_out, int old_out), void (*out1)(int new_out, int old_out));