#include<pic.h>
__CONFIG(FOSC_HS&WDTE_OFF&PWRTE_OFF&MCLRE_ON&CP_ON&CPD_ON&BOREN_ON&CLKOUTEN_OFF&IESO_OFF&FCMEN_OFF);
__CONFIG(WRT_ALL&PLLEN_OFF&STVREN_OFF&BORV_19&LVP_OFF);
//__CONFIG(0X3FFF);
//__CONFIG(0X3FFF);
void ioinit(void)
{
OPTION_REG = 0x80;
INTCON = 0x00;
TRISA = 0x3b; //00111011，RA0，RA1为比较器输入仅用同相输入
ANSELA = 0X03; //
TRISC = 0X07;
ANSELC = 0X07;
TRISB = 0X30;
ANSELB = 0X10;
}
void com1init(void)
{
CM1CON0 = 0xf5; //比较器使能，输出位极性反向，输出为使能，极性反向，正常模式，不滞后，输出同步模块
CM1CON1 = 0x00; //CxIN+同相输入
FVRCON = 0xcb; //11001011使能固定参考电压固定参考输出就绪比较器和DAC参考电压外设输出为2X，ADC外设参考电压外设输出为4X
}
void main()
{
for(unsigned int i=5000;i>0;i--);
ioinit();
com1init();
RC4=1;
while(1);
}
单试比较器模块的程序如上，现在情况是仿真proteus上正确
但是写入芯片就没有输出了
且硬件电路与仿真电路一致
各位大虾指教
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