stmt level source 1 #pragma cd 2 #include 3 #include 4 5 6 #define RX_SIZE 64 7 8 unsigned char idata *rx_in; // receive pointer 9 unsigned char idata *rx_out; 10 unsigned char idata *rx_end; 11 bit sti; // software TI bit 12 13 14 void uart_poll(void) 15 { 16 1 if( RI ){ 17 2 RI = 0; 18 2 *rx_in = SBUF; 19 2 rx_in++; 20 2 if( rx_in == rx_end ) 21 2 rx_in -= RX_SIZE; 22 2 } 23 1 } // 15 cycle 24 25 26 void uart_int(void) interrupt 4 27 { 28 1 if( RI ){ 29 2 RI = 0; 30 2 *rx_in = SBUF; 31 2 rx_in++; 32 2 if( rx_in == rx_end ) 33 2 rx_in -= RX_SIZE; 34 2 } 35 1 if( TI ){ 36 2 TI = 0; 37 2 sti = 1; 38 2 } 39 1 } // 31 cycle 40 ASSEMBLY LISTING OF GENERATED OBJECT CODE ; FUNCTION uart_poll (BEGIN) ; SOURCE LINE # 14 ; SOURCE LINE # 14 ; SOURCE LINE # 15 ; SOURCE LINE # 16 0000 309811 JNB RI,?C0003 ; SOURCE LINE # 17 0003 C298 CLR RI ; SOURCE LINE # 18 0005 A800 R MOV R0,rx_in 0007 A699 MOV @R0,SBUF ; SOURCE LINE # 19 0009 0500 R INC rx_in ; SOURCE LINE # 20 000B E500 R MOV A,rx_in 000D B50004 R CJNE A,rx_end,?C0003 ; SOURCE LINE # 21 0010 24C0 ADD A,#0C0H 0012 F500 R MOV rx_in,A ; SOURCE LINE # 22 ; SOURCE LINE # 23 0014 ?C0003: 0014 22 RET ; FUNCTION uart_poll (END) ; FUNCTION uart_int (BEGIN) 0000 C0E0 PUSH ACC 0002 C0D0 PUSH PSW 0004 C000 PUSH AR0 ; SOURCE LINE # 26 ; SOURCE LINE # 28 0006 309811 JNB RI,?C0004 ; SOURCE LINE # 29 0009 C298 CLR RI ; SOURCE LINE # 30 000B A800 R MOV R0,rx_in 000D A699 MOV @R0,SBUF ; SOURCE LINE # 31 000F 0500 R INC rx_in ; SOURCE LINE # 32 0011 E500 R MOV A,rx_in 0013 B50004 R CJNE A,rx_end,?C0004 ; SOURCE LINE # 33 0016 24C0 ADD A,#0C0H 0018 F500 R MOV rx_in,A ; SOURCE LINE # 34 001A ?C0004: ; SOURCE LINE # 35 001A 309904 JNB TI,?C0007 ; SOURCE LINE # 36 001D C299 CLR TI ; SOURCE LINE # 37 001F D200 R SETB sti ; SOURCE LINE # 38 ; SOURCE LINE # 39 0021 ?C0007: 0021 D000 POP AR0 0023 D0D0 POP PSW 0025 D0E0 POP ACC 0027 32 RETI ; FUNCTION uart_int (END)