leon_ (11.10.2008 11:54, просмотров: 358) ответил whale на Поделитесь кодом int x=x*0.8 для меги 128Варианты.
#include <mega128.h> void main(void) { int x; x = x * 0.8;// Не очень быстро - переводы во флоат и обратно x = (x << 3) / 10; // быстрее x = ((x << 3) + 5) / 10;// Правильное округление } ;==================== ASM ==================================== ;CodeVisionAVR C Compiler V1.25.9 Evaluation ;(C) Copyright 1998-2008 Pavel Haiduc, HP InfoTech s.r.l. ;http://www.hpinfotech.com ;Chip type : ATmega128 ;Program type : Application ;Clock frequency : 14,745600 MHz ;Memory model : Small ;Optimize for : Speed ;(s)printf features : int, width ;(s)scanf features : int, width ;External SRAM size : 0 ;Data Stack size : 1024 byte(s) ;Heap size : 0 byte(s) ;Promote char to int : No ;char is unsigned : Yes ;8 bit enums : Yes ;Word align FLASH struct: No ;Enhanced core instructions : On ;Smart register allocation : On ;Automatic register allocation : On #pragma AVRPART ADMIN PART_NAME ATmega128 #pragma AVRPART MEMORY PROG_FLASH 131072 #pragma AVRPART MEMORY EEPROM 4096 #pragma AVRPART MEMORY INT_SRAM SIZE 4096 #pragma AVRPART MEMORY INT_SRAM START_ADDR 0x100 .EQU UDRE=0x5 .EQU RXC=0x7 .EQU USR=0xB .EQU UDR=0xC .EQU SPSR=0xE .EQU SPDR=0xF .EQU EERE=0x0 .EQU EEWE=0x1 .EQU EEMWE=0x2 .EQU EECR=0x1C .EQU EEDR=0x1D .EQU EEARL=0x1E .EQU EEARH=0x1F .EQU WDTCR=0x21 .EQU MCUCR=0x35 .EQU RAMPZ=0x3B .EQU SPL=0x3D .EQU SPH=0x3E .EQU SREG=0x3F .EQU XMCRA=0x6D .EQU XMCRB=0x6C .DEF R0X0=R0 .DEF R0X1=R1 .DEF R0X2=R2 .DEF R0X3=R3 .DEF R0X4=R4 .DEF R0X5=R5 .DEF R0X6=R6 .DEF R0X7=R7 .DEF R0X8=R8 .DEF R0X9=R9 .DEF R0XA=R10 .DEF R0XB=R11 .DEF R0XC=R12 .DEF R0XD=R13 .DEF R0XE=R14 .DEF R0XF=R15 .DEF R0X10=R16 .DEF R0X11=R17 .DEF R0X12=R18 .DEF R0X13=R19 .DEF R0X14=R20 .DEF R0X15=R21 .DEF R0X16=R22 .DEF R0X17=R23 .DEF R0X18=R24 .DEF R0X19=R25 .DEF R0X1A=R26 .DEF R0X1B=R27 .DEF R0X1C=R28 .DEF R0X1D=R29 .DEF R0X1E=R30 .DEF R0X1F=R31 .MACRO __CPD1N CPI R30,LOW(@0) LDI R26,HIGH(@0) CPC R31,R26 LDI R26,BYTE3(@0) CPC R22,R26 LDI R26,BYTE4(@0) CPC R23,R26 .ENDM .MACRO __CPD2N CPI R26,LOW(@0) LDI R30,HIGH(@0) CPC R27,R30 LDI R30,BYTE3(@0) CPC R24,R30 LDI R30,BYTE4(@0) CPC R25,R30 .ENDM .MACRO __CPWRR CP R@0,R@2 CPC R@1,R@3 .ENDM .MACRO __CPWRN CPI R@0,LOW(@2) LDI R30,HIGH(@2) CPC R@1,R30 .ENDM .MACRO __ADDB1MN SUBI R30,LOW(-@0-(@1)) .ENDM .MACRO __ADDB2MN SUBI R26,LOW(-@0-(@1)) .ENDM .MACRO __ADDW1MN SUBI R30,LOW(-@0-(@1)) SBCI R31,HIGH(-@0-(@1)) .ENDM .MACRO __ADDW2MN SUBI R26,LOW(-@0-(@1)) SBCI R27,HIGH(-@0-(@1)) .ENDM .MACRO __ADDW1FN SUBI R30,LOW(-2*@0-(@1)) SBCI R31,HIGH(-2*@0-(@1)) .ENDM .MACRO __ADDD1FN SUBI R30,LOW(-2*@0-(@1)) SBCI R31,HIGH(-2*@0-(@1)) SBCI R22,BYTE3(-2*@0-(@1)) .ENDM .MACRO __ADDD1N SUBI R30,LOW(-@0) SBCI R31,HIGH(-@0) SBCI R22,BYTE3(-@0) SBCI R23,BYTE4(-@0) .ENDM .MACRO __ADDD2N SUBI R26,LOW(-@0) SBCI R27,HIGH(-@0) SBCI R24,BYTE3(-@0) SBCI R25,BYTE4(-@0) .ENDM .MACRO __SUBD1N SUBI R30,LOW(@0) SBCI R31,HIGH(@0) SBCI R22,BYTE3(@0) SBCI R23,BYTE4(@0) .ENDM .MACRO __SUBD2N SUBI R26,LOW(@0) SBCI R27,HIGH(@0) SBCI R24,BYTE3(@0) SBCI R25,BYTE4(@0) .ENDM .MACRO __ANDBMNN LDS R30,@0+@1 ANDI R30,LOW(@2) STS @0+@1,R30 .ENDM .MACRO __ANDWMNN LDS R30,@0+@1 ANDI R30,LOW(@2) STS @0+@1,R30 LDS R30,@0+@1+1 ANDI R30,HIGH(@2) STS @0+@1+1,R30 .ENDM .MACRO __ANDD1N ANDI R30,LOW(@0) ANDI R31,HIGH(@0) ANDI R22,BYTE3(@0) ANDI R23,BYTE4(@0) .ENDM .MACRO __ORBMNN LDS R30,@0+@1 ORI R30,LOW(@2) STS @0+@1,R30 .ENDM .MACRO __ORWMNN LDS R30,@0+@1 ORI R30,LOW(@2) STS @0+@1,R30 LDS R30,@0+@1+1 ORI R30,HIGH(@2) STS @0+@1+1,R30 .ENDM .MACRO __ORD1N ORI R30,LOW(@0) ORI R31,HIGH(@0) ORI R22,BYTE3(@0) ORI R23,BYTE4(@0) .ENDM .MACRO __DELAY_USB LDI R24,LOW(@0) __DELAY_USB_LOOP: DEC R24 BRNE __DELAY_USB_LOOP .ENDM .MACRO __DELAY_USW LDI R24,LOW(@0) LDI R25,HIGH(@0) __DELAY_USW_LOOP: SBIW R24,1 BRNE __DELAY_USW_LOOP .ENDM .MACRO __CLRD1S LDI R30,0 STD Y+@0,R30 STD Y+@0+1,R30 STD Y+@0+2,R30 STD Y+@0+3,R30 .ENDM .MACRO __GETD1S LDD R30,Y+@0 LDD R31,Y+@0+1 LDD R22,Y+@0+2 LDD R23,Y+@0+3 .ENDM .MACRO __PUTD1S STD Y+@0,R30 STD Y+@0+1,R31 STD Y+@0+2,R22 STD Y+@0+3,R23 .ENDM .MACRO __PUTD2S STD Y+@0,R26 STD Y+@0+1,R27 STD Y+@0+2,R24 STD Y+@0+3,R25 .ENDM .MACRO __POINTB1MN LDI R30,LOW(@0+@1) .ENDM .MACRO __POINTW1MN LDI R30,LOW(@0+@1) LDI R31,HIGH(@0+@1) .ENDM .MACRO __POINTD1M LDI R30,LOW(@0) LDI R31,HIGH(@0) LDI R22,BYTE3(@0) LDI R23,BYTE4(@0) .ENDM .MACRO __POINTW1FN LDI R30,LOW(2*@0+@1) LDI R31,HIGH(2*@0+@1) .ENDM .MACRO __POINTD1FN LDI R30,LOW(2*@0+@1) LDI R31,HIGH(2*@0+@1) LDI R22,BYTE3(2*@0+@1) LDI R23,BYTE4(2*@0+@1) .ENDM .MACRO __POINTB2MN LDI R26,LOW(@0+@1) .ENDM .MACRO __POINTW2MN LDI R26,LOW(@0+@1) LDI R27,HIGH(@0+@1) .ENDM .MACRO __POINTBRM LDI R@0,LOW(@1) .ENDM .MACRO __POINTWRM LDI R@0,LOW(@2) LDI R@1,HIGH(@2) .ENDM .MACRO __POINTBRMN LDI R@0,LOW(@1+@2) .ENDM .MACRO __POINTWRMN LDI R@0,LOW(@2+@3) LDI R@1,HIGH(@2+@3) .ENDM .MACRO __POINTWRFN LDI R@0,LOW(@2*2+@3) LDI R@1,HIGH(@2*2+@3) .ENDM .MACRO __GETD1N LDI R30,LOW(@0) LDI R31,HIGH(@0) LDI R22,BYTE3(@0) LDI R23,BYTE4(@0) .ENDM .MACRO __GETD2N LDI R26,LOW(@0) LDI R27,HIGH(@0) LDI R24,BYTE3(@0) LDI R25,BYTE4(@0) .ENDM .MACRO __GETD2S LDD R26,Y+@0 LDD R27,Y+@0+1 LDD R24,Y+@0+2 LDD R25,Y+@0+3 .ENDM .MACRO __GETB1MN LDS R30,@0+@1 .ENDM .MACRO __GETB1HMN LDS R31,@0+@1 .ENDM .MACRO __GETW1MN LDS R30,@0+@1 LDS R31,@0+@1+1 .ENDM .MACRO __GETD1MN LDS R30,@0+@1 LDS R31,@0+@1+1 LDS R22,@0+@1+2 LDS R23,@0+@1+3 .ENDM .MACRO __GETBRMN LDS R@0,@1+@2 .ENDM .MACRO __GETWRMN LDS R@0,@2+@3 LDS R@1,@2+@3+1 .ENDM .MACRO __GETWRZ LDD R@0,Z+@2 LDD R@1,Z+@2+1 .ENDM .MACRO __GETD2Z LDD R26,Z+@0 LDD R27,Z+@0+1 LDD R24,Z+@0+2 LDD R25,Z+@0+3 .ENDM .MACRO __GETB2MN LDS R26,@0+@1 .ENDM .MACRO __GETW2MN LDS R26,@0+@1 LDS R27,@0+@1+1 .ENDM .MACRO __GETD2MN LDS R26,@0+@1 LDS R27,@0+@1+1 LDS R24,@0+@1+2 LDS R25,@0+@1+3 .ENDM .MACRO __PUTB1MN STS @0+@1,R30 .ENDM .MACRO __PUTW1MN STS @0+@1,R30 STS @0+@1+1,R31 .ENDM .MACRO __PUTD1MN STS @0+@1,R30 STS @0+@1+1,R31 STS @0+@1+2,R22 STS @0+@1+3,R23 .ENDM .MACRO __PUTBR0MN STS @0+@1,R0 .ENDM .MACRO __PUTDZ2 STD Z+@0,R26 STD Z+@0+1,R27 STD Z+@0+2,R24 STD Z+@0+3,R25 .ENDM .MACRO __PUTBMRN STS @0+@1,R@2 .ENDM .MACRO __PUTWMRN STS @0+@1,R@2 STS @0+@1+1,R@3 .ENDM .MACRO __PUTBZR STD Z+@1,R@0 .ENDM .MACRO __PUTWZR STD Z+@2,R@0 STD Z+@2+1,R@1 .ENDM .MACRO __GETW1R MOV R30,R@0 MOV R31,R@1 .ENDM .MACRO __GETW2R MOV R26,R@0 MOV R27,R@1 .ENDM .MACRO __GETWRN LDI R@0,LOW(@2) LDI R@1,HIGH(@2) .ENDM .MACRO __PUTW1R MOV R@0,R30 MOV R@1,R31 .ENDM .MACRO __PUTW2R MOV R@0,R26 MOV R@1,R27 .ENDM .MACRO __ADDWRN SUBI R@0,LOW(-@2) SBCI R@1,HIGH(-@2) .ENDM .MACRO __ADDWRR ADD R@0,R@2 ADC R@1,R@3 .ENDM .MACRO __SUBWRN SUBI R@0,LOW(@2) SBCI R@1,HIGH(@2) .ENDM .MACRO __SUBWRR SUB R@0,R@2 SBC R@1,R@3 .ENDM .MACRO __ANDWRN ANDI R@0,LOW(@2) ANDI R@1,HIGH(@2) .ENDM .MACRO __ANDWRR AND R@0,R@2 AND R@1,R@3 .ENDM .MACRO __ORWRN ORI R@0,LOW(@2) ORI R@1,HIGH(@2) .ENDM .MACRO __ORWRR OR R@0,R@2 OR R@1,R@3 .ENDM .MACRO __EORWRR EOR R@0,R@2 EOR R@1,R@3 .ENDM .MACRO __GETWRS LDD R@0,Y+@2 LDD R@1,Y+@2+1 .ENDM .MACRO __PUTWSR STD Y+@2,R@0 STD Y+@2+1,R@1 .ENDM .MACRO __MOVEWRR MOV R@0,R@2 MOV R@1,R@3 .ENDM .MACRO __INWR IN R@0,@2 IN R@1,@2+1 .ENDM .MACRO __OUTWR OUT @2+1,R@1 OUT @2,R@0 .ENDM .MACRO __CALL1MN LDS R30,@0+@1 LDS R31,@0+@1+1 ICALL .ENDM .MACRO __CALL1FN LDI R30,LOW(2*@0+@1) LDI R31,HIGH(2*@0+@1) CALL __GETW1PF ICALL .ENDM .MACRO __CALL2EN LDI R26,LOW(@0+@1) LDI R27,HIGH(@0+@1) CALL __EEPROMRDW ICALL .ENDM .MACRO __GETW1STACK IN R26,SPL IN R27,SPH ADIW R26,@0+1 LD R30,X+ LD R31,X .ENDM .MACRO __NBST BST R@0,@1 IN R30,SREG LDI R31,0x40 EOR R30,R31 OUT SREG,R30 .ENDM .MACRO __PUTB1SN LDD R26,Y+@0 LDD R27,Y+@0+1 SUBI R26,LOW(-@1) SBCI R27,HIGH(-@1) ST X,R30 .ENDM .MACRO __PUTW1SN LDD R26,Y+@0 LDD R27,Y+@0+1 SUBI R26,LOW(-@1) SBCI R27,HIGH(-@1) ST X+,R30 ST X,R31 .ENDM .MACRO __PUTD1SN LDD R26,Y+@0 LDD R27,Y+@0+1 SUBI R26,LOW(-@1) SBCI R27,HIGH(-@1) CALL __PUTDP1 .ENDM .MACRO __PUTB1SNS LDD R26,Y+@0 LDD R27,Y+@0+1 ADIW R26,@1 ST X,R30 .ENDM .MACRO __PUTW1SNS LDD R26,Y+@0 LDD R27,Y+@0+1 ADIW R26,@1 ST X+,R30 ST X,R31 .ENDM .MACRO __PUTD1SNS LDD R26,Y+@0 LDD R27,Y+@0+1 ADIW R26,@1 CALL __PUTDP1 .ENDM .MACRO __PUTB1PMN LDS R26,@0 LDS R27,@0+1 SUBI R26,LOW(-@1) SBCI R27,HIGH(-@1) ST X,R30 .ENDM .MACRO __PUTW1PMN LDS R26,@0 LDS R27,@0+1 SUBI R26,LOW(-@1) SBCI R27,HIGH(-@1) ST X+,R30 ST X,R31 .ENDM .MACRO __PUTD1PMN LDS R26,@0 LDS R27,@0+1 SUBI R26,LOW(-@1) SBCI R27,HIGH(-@1) CALL __PUTDP1 .ENDM .MACRO __PUTB1PMNS LDS R26,@0 LDS R27,@0+1 ADIW R26,@1 ST X,R30 .ENDM .MACRO __PUTW1PMNS LDS R26,@0 LDS R27,@0+1 ADIW R26,@1 ST X+,R30 ST X,R31 .ENDM .MACRO __PUTD1PMNS LDS R26,@0 LDS R27,@0+1 ADIW R26,@1 CALL __PUTDP1 .ENDM .MACRO __PUTB1RN MOVW R26,R@0 SUBI R26,LOW(-@1) SBCI R27,HIGH(-@1) ST X,R30 .ENDM .MACRO __PUTW1RN MOVW R26,R@0 SUBI R26,LOW(-@1) SBCI R27,HIGH(-@1) ST X+,R30 ST X,R31 .ENDM .MACRO __PUTD1RN MOVW R26,R@0 SUBI R26,LOW(-@1) SBCI R27,HIGH(-@1) CALL __PUTDP1 .ENDM .MACRO __PUTB1RNS MOVW R26,R@0 ADIW R26,@1 ST X,R30 .ENDM .MACRO __PUTW1RNS MOVW R26,R@0 ADIW R26,@1 ST X+,R30 ST X,R31 .ENDM .MACRO __PUTD1RNS MOVW R26,R@0 ADIW R26,@1 CALL __PUTDP1 .ENDM .MACRO __PUTB1RON MOV R26,R@0 MOV R27,R@1 SUBI R26,LOW(-@2) SBCI R27,HIGH(-@2) ST X,R30 .ENDM .MACRO __PUTW1RON MOV R26,R@0 MOV R27,R@1 SUBI R26,LOW(-@2) SBCI R27,HIGH(-@2) ST X+,R30 ST X,R31 .ENDM .MACRO __PUTD1RON MOV R26,R@0 MOV R27,R@1 SUBI R26,LOW(-@2) SBCI R27,HIGH(-@2) CALL __PUTDP1 .ENDM .MACRO __PUTB1RONS MOV R26,R@0 MOV R27,R@1 ADIW R26,@2 ST X,R30 .ENDM .MACRO __PUTW1RONS MOV R26,R@0 MOV R27,R@1 ADIW R26,@2 ST X+,R30 ST X,R31 .ENDM .MACRO __PUTD1RONS MOV R26,R@0 MOV R27,R@1 ADIW R26,@2 CALL __PUTDP1 .ENDM .MACRO __GETB1SX MOVW R30,R28 SUBI R30,LOW(-@0) SBCI R31,HIGH(-@0) LD R30,Z .ENDM .MACRO __GETB1HSX MOVW R30,R28 SUBI R30,LOW(-@0) SBCI R31,HIGH(-@0) LD R31,Z .ENDM .MACRO __GETW1SX MOVW R30,R28 SUBI R30,LOW(-@0) SBCI R31,HIGH(-@0) LD R0,Z+ LD R31,Z MOV R30,R0 .ENDM .MACRO __GETD1SX MOVW R30,R28 SUBI R30,LOW(-@0) SBCI R31,HIGH(-@0) LD R0,Z+ LD R1,Z+ LD R22,Z+ LD R23,Z MOVW R30,R0 .ENDM .MACRO __GETB2SX MOVW R26,R28 SUBI R26,LOW(-@0) SBCI R27,HIGH(-@0) LD R26,X .ENDM .MACRO __GETW2SX MOVW R26,R28 SUBI R26,LOW(-@0) SBCI R27,HIGH(-@0) LD R0,X+ LD R27,X MOV R26,R0 .ENDM .MACRO __GETD2SX MOVW R26,R28 SUBI R26,LOW(-@0) SBCI R27,HIGH(-@0) LD R0,X+ LD R1,X+ LD R24,X+ LD R25,X MOVW R26,R0 .ENDM .MACRO __GETBRSX MOVW R30,R28 SUBI R30,LOW(-@1) SBCI R31,HIGH(-@1) LD R@0,Z .ENDM .MACRO __GETWRSX MOVW R30,R28 SUBI R30,LOW(-@2) SBCI R31,HIGH(-@2) LD R@0,Z+ LD R@1,Z .ENDM .MACRO __LSLW8SX MOVW R30,R28 SUBI R30,LOW(-@0) SBCI R31,HIGH(-@0) LD R31,Z CLR R30 .ENDM .MACRO __PUTB1SX MOVW R26,R28 SUBI R26,LOW(-@0) SBCI R27,HIGH(-@0) ST X,R30 .ENDM .MACRO __PUTW1SX MOVW R26,R28 SUBI R26,LOW(-@0) SBCI R27,HIGH(-@0) ST X+,R30 ST X,R31 .ENDM .MACRO __PUTD1SX MOVW R26,R28 SUBI R26,LOW(-@0) SBCI R27,HIGH(-@0) ST X+,R30 ST X+,R31 ST X+,R22 ST X,R23 .ENDM .MACRO __CLRW1SX MOVW R30,R28 SUBI R30,LOW(-@0) SBCI R31,HIGH(-@0) CLR R0 ST Z+,R0 ST Z,R0 .ENDM .MACRO __CLRD1SX MOVW R30,R28 SUBI R30,LOW(-@0) SBCI R31,HIGH(-@0) CLR R0 ST Z+,R0 ST Z+,R0 ST Z+,R0 ST Z,R0 .ENDM .MACRO __PUTB2SX MOVW R30,R28 SUBI R30,LOW(-@0) SBCI R31,HIGH(-@0) ST Z,R26 .ENDM .MACRO __PUTW2SX MOVW R30,R28 SUBI R30,LOW(-@0) SBCI R31,HIGH(-@0) ST Z+,R26 ST Z,R27 .ENDM .MACRO __PUTD2SX MOVW R30,R28 SUBI R30,LOW(-@0) SBCI R31,HIGH(-@0) ST Z+,R26 ST Z+,R27 ST Z+,R24 ST Z,R25 .ENDM .MACRO __PUTBSRX MOVW R30,R28 SUBI R30,LOW(-@0) SBCI R31,HIGH(-@0) ST Z,R@1 .ENDM .MACRO __PUTWSRX MOVW R30,R28 SUBI R30,LOW(-@2) SBCI R31,HIGH(-@2) ST Z+,R@0 ST Z,R@1 .ENDM .MACRO __PUTB1SNX MOVW R26,R28 SUBI R26,LOW(-@0) SBCI R27,HIGH(-@0) LD R0,X+ LD R27,X MOV R26,R0 SUBI R26,LOW(-@1) SBCI R27,HIGH(-@1) ST X,R30 .ENDM .MACRO __PUTW1SNX MOVW R26,R28 SUBI R26,LOW(-@0) SBCI R27,HIGH(-@0) LD R0,X+ LD R27,X MOV R26,R0 SUBI R26,LOW(-@1) SBCI R27,HIGH(-@1) ST X+,R30 ST X,R31 .ENDM .MACRO __PUTD1SNX MOVW R26,R28 SUBI R26,LOW(-@0) SBCI R27,HIGH(-@0) LD R0,X+ LD R27,X MOV R26,R0 SUBI R26,LOW(-@1) SBCI R27,HIGH(-@1) ST X+,R30 ST X+,R31 ST X+,R22 ST X,R23 .ENDM .MACRO __MULBRR MULS R@0,R@1 MOVW R30,R0 .ENDM .MACRO __MULBRRU MUL R@0,R@1 MOVW R30,R0 .ENDM .MACRO __MULBRR0 MULS R@0,R@1 .ENDM .MACRO __MULBRRU0 MUL R@0,R@1 .ENDM .MACRO __MULBNWRU LDI R26,@2 MUL R26,R@0 MOVW R30,R0 MUL R26,R@1 ADD R31,R0 .ENDM .CSEG .ORG 0 .INCLUDE "1.vec" .INCLUDE "1.inc" __RESET: CLI CLR R30 OUT EECR,R30 ;INTERRUPT VECTORS ARE PLACED ;AT THE START OF FLASH LDI R31,1 OUT MCUCR,R31 OUT MCUCR,R30 STS XMCRB,R30 ;DISABLE WATCHDOG LDI R31,0x18 OUT WDTCR,R31 OUT WDTCR,R30 ;CLEAR R2-R14 LDI R24,13 LDI R26,2 CLR R27 __CLEAR_REG: ST X+,R30 DEC R24 BRNE __CLEAR_REG ;CLEAR SRAM LDI R24,LOW(0x1000) LDI R25,HIGH(0x1000) LDI R26,LOW(0x100) LDI R27,HIGH(0x100) __CLEAR_SRAM: ST X+,R30 SBIW R24,1 BRNE __CLEAR_SRAM OUT RAMPZ,R24 ;GLOBAL VARIABLES INITIALIZATION LDI R30,LOW(__GLOBAL_INI_TBL*2) LDI R31,HIGH(__GLOBAL_INI_TBL*2) __GLOBAL_INI_NEXT: LPM R24,Z+ LPM R25,Z+ SBIW R24,0 BREQ __GLOBAL_INI_END LPM R26,Z+ LPM R27,Z+ LPM R0,Z+ LPM R1,Z+ MOVW R22,R30 MOVW R30,R0 __GLOBAL_INI_LOOP: LPM R0,Z+ ST X+,R0 SBIW R24,1 BRNE __GLOBAL_INI_LOOP MOVW R30,R22 RJMP __GLOBAL_INI_NEXT __GLOBAL_INI_END: ;STACK POINTER INITIALIZATION LDI R30,LOW(0x10FF) OUT SPL,R30 LDI R30,HIGH(0x10FF) OUT SPH,R30 ;DATA STACK POINTER INITIALIZATION LDI R28,LOW(0x500) LDI R29,HIGH(0x500) JMP _main .ESEG .ORG 0 .DSEG .ORG 0x500 ; 1 #include <mega128.h> ; 2 #ifndef __SLEEP_DEFINED__ #ifndef __SLEEP_DEFINED__ ; 3 #define __SLEEP_DEFINED__ #define __SLEEP_DEFINED__ ; 4 .EQU __se_bit=0x20 .EQU __se_bit=0x20 ; 5 .EQU __sm_mask=0x1C .EQU __sm_mask=0x1C ; 6 .EQU __sm_powerdown=0x10 .EQU __sm_powerdown=0x10 ; 7 .EQU __sm_powersave=0x18 .EQU __sm_powersave=0x18 ; 8 .EQU __sm_standby=0x14 .EQU __sm_standby=0x14 ; 9 .EQU __sm_ext_standby=0x1C .EQU __sm_ext_standby=0x1C ; 10 .EQU __sm_adc_noise_red=0x08 .EQU __sm_adc_noise_red=0x08 ; 11 .SET power_ctrl_reg=mcucr .SET power_ctrl_reg=mcucr ; 12 #endif #endif ; 13 void main(void) ; 14 { .CSEG _main: ; 15 int x; ; 16 x = x * 0.8; // Не очень быстро - переводы во флоат и обратно ; x -> R16,R17 MOVW R30,R16 CALL __CWD1 CALL __CDF1 __GETD2N 0x3F4CCCCD CALL __MULF12 CALL __CFD1 MOVW R16,R30 ; 17 x = (x << 3) / 10; // быстрее MOVW R30,R16 CALL __LSLW3 MOVW R26,R30 LDI R30,LOW(10) LDI R31,HIGH(10) CALL __DIVW21 MOVW R16,R30 ; 18 x = ((x << 3) + 5) / 10; // Правильное округление MOVW R30,R16 CALL __LSLW3 ADIW R30,5 MOVW R26,R30 LDI R30,LOW(10) LDI R31,HIGH(10) CALL __DIVW21 MOVW R16,R30 ; 19 } _0x3: RJMP _0x3 __ANEGW1: NEG R31 NEG R30 SBCI R31,0 RET __ANEGD1: COM R31 COM R22 COM R23 NEG R30 SBCI R31,-1 SBCI R22,-1 SBCI R23,-1 RET __LSLW3: LSL R30 ROL R31 __LSLW2: LSL R30 ROL R31 LSL R30 ROL R31 RET __CWD1: MOV R22,R31 ADD R22,R22 SBC R22,R22 MOV R23,R22 RET __DIVW21U: CLR R0 CLR R1 LDI R25,16 __DIVW21U1: LSL R26 ROL R27 ROL R0 ROL R1 SUB R0,R30 SBC R1,R31 BRCC __DIVW21U2 ADD R0,R30 ADC R1,R31 RJMP __DIVW21U3 __DIVW21U2: SBR R26,1 __DIVW21U3: DEC R25 BRNE __DIVW21U1 MOVW R30,R26 MOVW R26,R0 RET __DIVW21: RCALL __CHKSIGNW RCALL __DIVW21U BRTC __DIVW211 RCALL __ANEGW1 __DIVW211: RET __CHKSIGNW: CLT SBRS R31,7 RJMP __CHKSW1 RCALL __ANEGW1 SET __CHKSW1: SBRS R27,7 RJMP __CHKSW2 COM R26 COM R27 ADIW R26,1 BLD R0,0 INC R0 BST R0,0 __CHKSW2: RET __ROUND_REPACK: TST R21 BRPL __REPACK CPI R21,0x80 BRNE __ROUND_REPACK0 SBRS R30,0 RJMP __REPACK __ROUND_REPACK0: ADIW R30,1 ADC R22,R25 ADC R23,R25 BRVS __REPACK1 __REPACK: LDI R21,0x80 EOR R21,R23 BRNE __REPACK0 PUSH R21 RJMP __ZERORES __REPACK0: CPI R21,0xFF BREQ __REPACK1 LSL R22 LSL R0 ROR R21 ROR R22 MOV R23,R21 RET __REPACK1: PUSH R21 TST R0 BRMI __REPACK2 RJMP __MAXRES __REPACK2: RJMP __MINRES __UNPACK: LDI R21,0x80 MOV R1,R25 AND R1,R21 LSL R24 ROL R25 EOR R25,R21 LSL R21 ROR R24 __UNPACK1: LDI R21,0x80 MOV R0,R23 AND R0,R21 LSL R22 ROL R23 EOR R23,R21 LSL R21 ROR R22 RET __CFD1U: SET RJMP __CFD1U0 __CFD1: CLT __CFD1U0: PUSH R21 RCALL __UNPACK1 CPI R23,0x80 BRLO __CFD10 CPI R23,0xFF BRCC __CFD10 RJMP __ZERORES __CFD10: LDI R21,22 SUB R21,R23 BRPL __CFD11 NEG R21 CPI R21,8 BRTC __CFD19 CPI R21,9 __CFD19: BRLO __CFD17 SER R30 SER R31 SER R22 LDI R23,0x7F BLD R23,7 RJMP __CFD15 __CFD17: CLR R23 TST R21 BREQ __CFD15 __CFD18: LSL R30 ROL R31 ROL R22 ROL R23 DEC R21 BRNE __CFD18 RJMP __CFD15 __CFD11: CLR R23 __CFD12: CPI R21,8 BRLO __CFD13 MOV R30,R31 MOV R31,R22 MOV R22,R23 SUBI R21,8 RJMP __CFD12 __CFD13: TST R21 BREQ __CFD15 __CFD14: LSR R23 ROR R22 ROR R31 ROR R30 DEC R21 BRNE __CFD14 __CFD15: TST R0 BRPL __CFD16 RCALL __ANEGD1 __CFD16: POP R21 RET __CDF1U: SET RJMP __CDF1U0 __CDF1: CLT __CDF1U0: SBIW R30,0 SBCI R22,0 SBCI R23,0 BREQ __CDF10 CLR R0 BRTS __CDF11 TST R23 BRPL __CDF11 COM R0 RCALL __ANEGD1 __CDF11: MOV R1,R23 LDI R23,30 TST R1 __CDF12: BRMI __CDF13 DEC R23 LSL R30 ROL R31 ROL R22 ROL R1 RJMP __CDF12 __CDF13: MOV R30,R31 MOV R31,R22 MOV R22,R1 PUSH R21 RCALL __REPACK POP R21 __CDF10: RET __ZERORES: CLR R30 CLR R31 CLR R22 CLR R23 POP R21 RET __MINRES: SER R30 SER R31 LDI R22,0x7F SER R23 POP R21 RET __MAXRES: SER R30 SER R31 LDI R22,0x7F LDI R23,0x7F POP R21 RET __MULF12: PUSH R21 RCALL __UNPACK CPI R23,0x80 BREQ __ZERORES CPI R25,0x80 BREQ __ZERORES EOR R0,R1 SEC ADC R23,R25 BRVC __MULF124 BRLT __ZERORES __MULF125: TST R0 BRMI __MINRES RJMP __MAXRES __MULF124: PUSH R0 PUSH R17 PUSH R18 PUSH R19 PUSH R20 CLR R17 CLR R18 CLR R25 MUL R22,R24 MOVW R20,R0 MUL R24,R31 MOV R19,R0 ADD R20,R1 ADC R21,R25 MUL R22,R27 ADD R19,R0 ADC R20,R1 ADC R21,R25 MUL R24,R30 RCALL __MULF126 MUL R27,R31 RCALL __MULF126 MUL R22,R26 RCALL __MULF126 MUL R27,R30 RCALL __MULF127 MUL R26,R31 RCALL __MULF127 MUL R26,R30 ADD R17,R1 ADC R18,R25 ADC R19,R25 ADC R20,R25 ADC R21,R25 MOV R30,R19 MOV R31,R20 MOV R22,R21 MOV R21,R18 POP R20 POP R19 POP R18 POP R17 POP R0 TST R22 BRMI __MULF122 LSL R21 ROL R30 ROL R31 ROL R22 RJMP __MULF123 __MULF122: INC R23 BRVS __MULF125 __MULF123: RCALL __ROUND_REPACK POP R21 RET __MULF127: ADD R17,R0 ADC R18,R1 ADC R19,R25 RJMP __MULF128 __MULF126: ADD R18,R0 ADC R19,R1 __MULF128: ADC R20,R25 ADC R21,R25 RET ;END OF CODE MARKER __END_OF_CODE:
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- брррр ) - whale(11.10.2008 13:20)