作者loveflames (.....)
看板ASM
标题8051 SFR或特殊位元的16进位表示法
时间Fri Feb 2 18:30:53 2007
sfr P0 = 0x80;
sfr P1 = 0x90;
sfr P2 = 0xA0;
sfr P3 = 0xB0;
sfr PSW = 0xD0;只能由暂存器改变
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;
/* PSW */
sbit CY = 0xD7;只能由setb跟clr直接控制或同psw
sbit AC = 0xD6;
sbit F0 = 0xD5;
sbit RS1 = 0xD4;
sbit RS0 = 0xD3;
sbit OV = 0xD2;
sbit P = 0xD0;
/* TCON */
sbit TF1 = 0x8F;只能由setb跟clr直接控制
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;只能由setb跟clr直接控制
sbit ES = 0xAC;
sbit ET1 = 0xAB;
sbit EX1 = 0xAA;
sbit ET0 = 0xA9;
sbit EX0 = 0xA8;
/* IP */
sbit PT2 = 0xbd;定义Timer2之优先权层次（8052）
sbit PS = 0xBC;只能由setb跟clr直接控制
sbit PT1 = 0xBB;
sbit PX1 = 0xBA;
sbit PT0 = 0xB9;
sbit PX0 = 0xB8;
/* P3 */
sbit RD = 0xB7;只能由setb跟clr直接控制
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;只能由setb跟clr直接控制
sbit SM1 = 0x9E;
sbit SM2 = 0x9D;
sbit REN = 0x9C;
sbit TB8 = 0x9B;
sbit RB8 = 0x9A;
sbit TI = 0x99;
sbit RI = 0x98;
/* P0 */
sbit P07 = 0x87;
sbit P06 = 0x86;
sbit P05 = 0x85;
sbit P04 = 0x84;
sbit P03 = 0x83;
sbit P02 = 0x82;
sbit P01 = 0x81;
sbit P00 = 0x80;
/* P1 */
sbit P17 = 0x97;
sbit P16 = 0x96;
sbit P15 = 0x95;
sbit P14 = 0x94;
sbit P13 = 0x93;
sbit P12 = 0x92;
sbit P11 = 0x91;
sbit P10 = 0x90;
/* P2 */
sbit P27 = 0xA7;
sbit P26 = 0xA6;
sbit P25 = 0xA5;
sbit P24 = 0xA4;
sbit P23 = 0xA3;
sbit P22 = 0xA2;
sbit P21 = 0xA1;
sbit P20 = 0xA0;
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※ 发信站: 批踢踢实业坊(ptt.cc)
◆ From: 61.225.1.115
1F：→ ruemann:那个sbit的用法是那个组译器的用法？没看过哩 02/03 00:41
2F：→ ruemann:不过8051好久没碰了，有错请勿见怪 02/03 00:41
3F：→ loveflames:只是强调後面是特殊位元而已，平常只要打後面的就好 02/03 00:47
4F：→ sintsu:sbit我好像在keilC里面的标头档看到 02/08 15:17