osdtimer.src

采用台湾MRT晶捷公司的MRT4方案的液晶电视的程序

; OSDTIMER.SRC generated from: OSDTIMER.C

$NOMOD51

NAME	OSDTIMER

P0	DATA	080H
P1	DATA	090H
P2	DATA	0A0H
P3	DATA	0B0H
PSW	DATA	0D0H
ACC	DATA	0E0H
B	DATA	0F0H
SP	DATA	081H
DPL	DATA	082H
DPH	DATA	083H
PCON	DATA	087H
TCON	DATA	088H
TMOD	DATA	089H
TL0	DATA	08AH
TL1	DATA	08BH
TH0	DATA	08CH
TH1	DATA	08DH
IE	DATA	0A8H
IP	DATA	0B8H
SCON	DATA	098H
SBUF	DATA	099H
CY	BIT	0D0H.7
AC	BIT	0D0H.6
F0	BIT	0D0H.5
RS1	BIT	0D0H.4
RS0	BIT	0D0H.3
OV	BIT	0D0H.2
P	BIT	0D0H.0
TF1	BIT	088H.7
TR1	BIT	088H.6
TF0	BIT	088H.5
TR0	BIT	088H.4
IE1	BIT	088H.3
IT1	BIT	088H.2
IE0	BIT	088H.1
IT0	BIT	088H.0
EA	BIT	0A8H.7
ES	BIT	0A8H.4
ET1	BIT	0A8H.3
EX1	BIT	0A8H.2
ET0	BIT	0A8H.1
EX0	BIT	0A8H.0
PS	BIT	0B8H.4
PT1	BIT	0B8H.3
PX1	BIT	0B8H.2
PT0	BIT	0B8H.1
PX0	BIT	0B8H.0
RD	BIT	0B0H.7
WR	BIT	0B0H.6
T1	BIT	0B0H.5
T0	BIT	0B0H.4
INT1	BIT	0B0H.3
INT0	BIT	0B0H.2
TXD	BIT	0B0H.1
RXD	BIT	0B0H.0
SM0	BIT	098H.7
SM1	BIT	098H.6
SM2	BIT	098H.5
REN	BIT	098H.4
TB8	BIT	098H.3
RB8	BIT	098H.2
TI	BIT	098H.1
RI	BIT	098H.0
SDAPin	BIT	090H.6
SCLPin	BIT	090H.7
WPPin	BIT	090H.5
ResetPin	BIT	0A0H.0
BrightnessPin	BIT	0B0H.5
VGA_CON_PIN	BIT	0A0H.5
LED_O_Pin	BIT	080H.0
LED_G_Pin	BIT	080H.1
PANEL_VCC_PIN	BIT	0A0H.2
PANEL_BKL_PIN	BIT	0A0H.3
POWER_BUT_PIN	BIT	090H.4
MENU_BUT_PIN	BIT	090H.1
RIGHT_BUT_PIN	BIT	090H.2
LEFT_BUT_PIN	BIT	090H.3
AUTO_BUT_PIN	BIT	090H.0
?PR?timer0_isr?OSDTIMER                  SEGMENT CODE
?PR?timer0_init?OSDTIMER                 SEGMENT CODE
?PR?timer0_start?OSDTIMER                SEGMENT CODE
?PR?timer0_stop?OSDTIMER                 SEGMENT CODE
	EXTRN	BIT (TimerOver)
	EXTRN	DATA (TimerCnt)
	EXTRN	DATA (CurrentTimerSet)
	PUBLIC	timer0_stop
	PUBLIC	timer0_start
	PUBLIC	timer0_init
; /************************************************
; *                                               *
; * OSDETIMER.C:  Timer control routines.         *
; *                                               *
; *************************************************/
; #include <reg51.h>
; #include "mosaic.h"
; #include "OSD.h"
; #include "global.h"
; 
; 
; #if USE_TIMER0
; /**************************************************************
; * Timer interrupt service routine                             *
; * it should be executed automatically when TIMER 0 overflows. *
; ***************************************************************/
; 
CSEG	AT	0000BH
	LJMP	timer0_isr

; static void timer0_isr(void) interrupt 1

	RSEG  ?PR?timer0_isr?OSDTIMER
	USING	0
timer0_isr:
	PUSH 	ACC
			; SOURCE LINE # 18
; {
; 
;     if(TimerCnt == CurrentTimerSet)
			; SOURCE LINE # 21
	MOV  	A,TimerCnt+01H
	XRL  	A,CurrentTimerSet+01H
	JNZ  	?C0007
	MOV  	A,TimerCnt
	XRL  	A,CurrentTimerSet
?C0007:
	JNZ  	?C0001
; 	   /* Set the Disable OSD frame flag */
; 	   TimerOver = 1;
			; SOURCE LINE # 23
	SETB 	TimerOver
	SJMP 	?C0003
?C0001:
;     else
;        TimerCnt++;
			; SOURCE LINE # 25
	INC  	TimerCnt+01H
	MOV  	A,TimerCnt+01H
	JNZ  	?C0008
	INC  	TimerCnt
?C0008:
; 
;     
; }
			; SOURCE LINE # 28
?C0003:
	POP  	ACC
	RETI 	
; END OF timer0_isr

; 
; 
; /****************************************
; * Timer interrupt initialization        *
; *****************************************/
; void timer0_init(void)

	RSEG  ?PR?timer0_init?OSDTIMER
	USING	0
timer0_init:
			; SOURCE LINE # 34
; {
			; SOURCE LINE # 35
; 
;     TimerCnt = 0;
			; SOURCE LINE # 37
	CLR  	A
	MOV  	TimerCnt,A
	MOV  	TimerCnt+01H,A
; 
; 	/* set timer 0 mode as software control interrupt and run on 16-bit mode */
; 	TMOD &= 0xF0; TMOD |= 0x01;
			; SOURCE LINE # 40
	ANL  	TMOD,#0F0H
	ORL  	TMOD,#01H
; 
;     TL0 = (TIMER0_COUNT & 0x00FF);
			; SOURCE LINE # 42
	MOV  	TL0,#01H
;     TH0 = (TIMER0_COUNT >> 8);
			; SOURCE LINE # 43
	MOV  	TH0,A
; 
; 	/* enable timer 0 interrupt globly and stop timer running */
; 	ET0 = 1;
			; SOURCE LINE # 46
	SETB 	ET0
;     TR0 = 0;
			; SOURCE LINE # 47
	CLR  	TR0
; 
; 	/* Clean timer flag */
; 	TimerOver = 0;
			; SOURCE LINE # 50
	CLR  	TimerOver
; 
; }
			; SOURCE LINE # 52
	RET  	
; END OF timer0_init

; 
; /****************************************
; * Start Timer                           *
; *****************************************/
; void timer0_start (void)

	RSEG  ?PR?timer0_start?OSDTIMER
	USING	0
timer0_start:
			; SOURCE LINE # 57
; {
			; SOURCE LINE # 58
; 
; 
;      /* load timer */
; 
; #if (CPUCLOCK == 12)	
; 			/*  1000000 US / 65536 US = 15  */
;             CurrentTimerSet = DEF_osdTiming * 15;
			; SOURCE LINE # 65
	MOV  	CurrentTimerSet,#01H
	MOV  	CurrentTimerSet+01H,#0C2H
; #else
;             CurrentTimerSet = DEF_osdTiming * 30;
; #endif
; 	
; 	TR0 = 1;
			; SOURCE LINE # 70
	SETB 	TR0
; 		
; 
; 
; }
			; SOURCE LINE # 74
	RET  	
; END OF timer0_start

; 
; /****************************************
; * Stop Timer                            *
; *****************************************/
; void timer0_stop (void)

	RSEG  ?PR?timer0_stop?OSDTIMER
	USING	0
timer0_stop:
			; SOURCE LINE # 79
; {
			; SOURCE LINE # 80
; 	/* stop timer 0 */
; 	TR0 = 0;
			; SOURCE LINE # 82
	CLR  	TR0
;     TimerCnt = 0;
			; SOURCE LINE # 83
	CLR  	A
	MOV  	TimerCnt,A
	MOV  	TimerCnt+01H,A
; }
			; SOURCE LINE # 84
	RET  	
; END OF timer0_stop

	END