代码来自俄罗斯的网站，我改动过
isd还有一些不太明白的问题，大家讨论一下
单步执行到ISDwait (); 老是跳不出去 ，那位用过介绍一下经验
TEST.C: ISD51 Demo for classic 8051 devices like Philips 89C51RD2/89C66x
Copyright 2002 Keil Software, Inc.
Modified by Alexey Selischev, Aug., 2002
------------------------------------------------------------------------------*/
#include <reg52.h> //stc89C516RD+(P89C51RD**)ISD连接pass
#include <intrins.h> //stc89LE58RD+(WE78LE58) ISD连接pass
#include <absacc.h>
#include "ISD51.h"
sbit P15 = P1^0;
sbit P16 = P1^1;
sbit P17 = P1^2;
#define LEDS XBYTE [0xFFFF] // 0 - on, 1 - off
void delay(void)
{
unsigned int i;
i = 0x800;
while(i--);
}
void main (void)
{
unsigned int j;
unsigned char ext_reg = 0;
SCON = 0x50;
//PCON &= 0x7F;
T2CON &= 0xF0; /* EXEN2=0; TR2=0; C/T2#=0; CP/RL2#=0; */
T2CON |= 0x30; /* RCLK = 1; TCLK=1; */
RCAP2H=0xFF; /* reload value, 9600 Bds at 18.432MHz */
RCAP2L=0xC4; /* reload value, 9600 Bds at 18.432MHz */
ES = 1; /* Enable serial interrupt */
EA = 1; /* Enable global interrupt */
TR2 = 1; /* Timer 2 run */
// TMOD = 0x20;
// TH1 = 0xfd;
// TR1 = 1;
REN = 1;
EA = 1;
ISDinit (); // initialize uVision2 Debugger and continue program run
ISDwait (); // wait for connection to uVision2 Debugger
P17 = 0; P16 = 0; P15 = 0; //耜铐翳泱痂痤忄螯 P15..P17 赅?鲨麴钼铋 怩钿
while (1)
{
// init ISD51 only when the uVision2 Debugger tries to connect
ISDcheck(); // initialize uVision2 Debugger and continue program run
_nop_();
_nop_();
_nop_();
_nop_();
_nop_();
_nop_();
_nop_();
_nop_();
ext_reg = (char) P15;
ext_reg = ext_reg << 1;
ext_reg = ext_reg + (char) P16;
LEDS = ext_reg;
j++;
if (P17 == 0)
{
ext_reg = 0;
j = 0;
// you may use ISDbreak when ISD51 is started with ISDcheck or ISDwait
// ISDbreak (); // hard coded stop (breakpoint)
ISDbreak (); // hard coded stop (breakpoint)
}
_nop_();
_nop_();
_nop_();
delay();
_nop_();
_nop_();
_nop_();
}
}
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