stdio.h

来自「AVR系列被广泛应用的单片机MEGA8开发(原理图)及例程」· C头文件 代码 · 共 24 行

0x5E)

/* Status REGister */
#define SREG	(*(volatile unsigned char *)0x5F)

/* eXternal Memory Control Register */
#define XMCRB	(*(volatile unsigned char *)0x6C) /* m/m */
#define  XMBK     7
#define  XMM2     2
#define  XMM1     1
#define  XMM0     0
#define XMCRA	(*(volatile unsigned char *)0x6D) /* m/m */
#define  SRL2     6
#define  SRL1     5
#define  SRL0     4
#define  SRW01    3
#define  SRW00    2
#define  SRW11    1


/* Port A bits */
#define  PORTA7   7
#define  PORTA6   6
#define  PO