testcmd1.rar_16c25_16c2550_pc104_site:www.pudn.com

#include<stdlib.h> #include<string.h> #include<stdio.h> #include<DOS.h> #include<math.h> #include<conio.h> #include<stdarg.h> #include <graphics.h> #define ESC 0x1b /*define the escape key*/ void interrupt NewHandler1(...); void interrupt(* oldHandler)(...); int IrqVect(int _nIrq); void CommIrqEnable(int _nIrq); int key2=0; main() { int i1=0; char tem1=0; getch(); disable(); outportb(0x22b,0x80); outportb(0x228,0x06); outportb(0x229,0x00); outportb(0x22b,0x03); outportb(0x22a,0xcb); outportb(0x229,0x01); outportb(0x22c,0x08); oldHandler=getvect(IrqVect(12)); setvect(IrqVect(12),NewHandler1); CommIrqEnable(12); outportb(0x22a,0xcb); enable() ; printf("lsr:%x",inportb(0x22d)); printf("lcr:%x",inportb(0x22b)); printf("isr:%x",inportb(0x22a)); printf("ier:%x",inportb(0x229)); printf("mcr:%x",inportb(0x22c)); for (int i2=0;i2<14;i2++) { printf("%x",inportb(0x228)); } getch(); while(!kbhit()) { printf("ISR:%x",inportb(0x22a)); printf("LSR:%x",inportb(0x22d)); if (key2==1) { printf("i do\n"); for(i1=0;i1<14;i1++) { printf("1 "); tem1=inportb(0x228); printf("2 "); printf("%d %x",i1,tem1); printf(" 3\n"); } outportb(0x22a,0xcb); printf("ok?"); key2=0; } } getch(); printf("LSR:%x",inportb(0x22d)); setvect(IrqVect(12),oldHandler); getch(); return 0; } int IrqVect(int _nIrq) { int vect; if(_nIrq<8) vect=_nIrq+0x08; else vect=_nIrq+0x70-8; return vect; } void CommIrqEnable(int _nIrq)// surpose all interrupt enable { int nSetInt; int nPort; nPort=0xA1; if(_nIrq<8)nPort=0x21; if( _nIrq<8 ) { nSetInt=1<<_nIrq; } else { nSetInt=1<<(_nIrq-8);outportb(0x21,inportb(0x21)&0xfb); } nSetInt=~nSetInt; if(_nIrq<8) outportb(nPort,inportb(nPort)&nSetInt); else { outportb(nPort,inportb(nPort)&nSetInt); } } void interrupt NewHandler1(...) { key2=1; outportb(0x20,0x20); outportb(0xa0,0x20); }