Question

stc89c516在keil中选什么机型啊

Answer 1

REG52.h就可以了，自己再增加几个寄存器的定义就可以了，其实就是扩展RAM和看门狗。我一直是这么用516的，我的REG52.H:
/*
*-----------------------------------------------------------------------------
* Copyright (c) KEIL ELEKTRONIK GmbH and Franklin Software, Inc., 1987-1992
*-----------------------------------------------------------------------------
*/
/* 8052 Processor Declarations */

/* BYTE Registers */

sfr P0 = 0x80;
sfr P1 = 0x90;
sfr P2 = 0xA0;
sfr P3 = 0xB0;
sfr P4 = 0xE8;

/*W78E516*/
sfr CHPENR = 0xf6;
sfr SFRAH = 0xc5;
sfr SFRAL = 0xc4;
sfr SFRFD = 0xc6;
sfr SFRCN = 0xc7;
sfr CHPCON = 0xbf;
sbit P40 = 0xd8;
sbit P41 = 0xd9;
sbit P42 = 0xda;
sbit P43 = 0xdb;

sfr PSW = 0xD0;
sfr ACC = 0xE0;
sfr B = 0xF0;
sfr SP = 0x81;
sfr DPL = 0x82;
sfr DPH = 0x83;
sfr PCON = 0x87;
sfr TCON = 0x88;
sfr TMOD = 0x89;
sfr TL0 = 0x8A;
sfr TL1 = 0x8B;
sfr TH0 = 0x8C;
sfr TH1 = 0x8D;
sfr IE = 0xA8;
sfr IP = 0xB8;
sfr SCON = 0x98;
sfr SBUF = 0x99;

/* 8052 Extensions */
sfr T2CON = 0xC8;
sfr RCAP2L = 0xCA;
sfr RCAP2H = 0xCB;
sfr TL2 = 0xCC;
sfr TH2 = 0xCD;

/* BIT Registers */
/* PSW */
sbit CY = 0xD7;
sbit AC = 0xD6;
sbit F0 = 0xD5;
sbit RS1 = 0xD4;
sbit RS0 = 0xD3;
sbit OV = 0xD2;
sbit P = 0xD0;

/* TCON */
sbit TF1 = 0x8F;
sbit TR1 = 0x8E;
sbit TF0 = 0x8D;
sbit TR0 = 0x8C;
sbit IE1 = 0x8B;
sbit IT1 = 0x8A;
sbit IE0 = 0x89;
sbit IT0 = 0x88;

/* IE */
sbit EA = 0xAF;
sbit ES = 0xAC;
sbit ET1 = 0xAB;
sbit EX1 = 0xAA;
sbit ET0 = 0xA9;
sbit EX0 = 0xA8;

/* IP */
sbit PS = 0xBC;
sbit PT1 = 0xBB;
sbit PX1 = 0xBA;
sbit PT0 = 0xB9;
sbit PX0 = 0xB8;

/* P3 */
sbit RD = 0xB7;
sbit WR = 0xB6;
sbit T1 = 0xB5;
sbit T0 = 0xB4;
sbit INT1 = 0xB3;
sbit INT0 = 0xB2;
sbit TXD = 0xB1;
sbit RXD = 0xB0;

/* SCON */
sbit SM0 = 0x9F;
sbit SM1 = 0x9E;
sbit SM2 = 0x9D;
sbit REN = 0x9C;
sbit TB8 = 0x9B;
sbit RB8 = 0x9A;
sbit TI = 0x99;
sbit RI = 0x98;

/* 8052 Extensions */
/* IE */
sbit ET2 = 0xAD;

/* IP */
sbit PT2 = 0xBD;

/* P1 */
sbit T2EX = 0x91;
sbit T2 = 0x90;

/* T2CON */
sbit TF2 = 0xCF;
sbit T2IP = 0xCE;

sbit RCLK = 0xCD;
sbit T2IE = 0xCD;

sbit TCLK = 0xCC;
sbit T2RSE = 0xCC;

sbit BGEN = 0xCB;
sbit TR2 = 0xCA;
sbit C_T2 = 0xC9;
sbit CP_RL2= 0xC8;

sfr AUXR = 0x8E;

sfr WDT_CONTR = 0xe1;