listing5.txt

来自「flash programming in linx」· 文本 代码 · 共 9 行

#define MAILBOX_LENGTH 10
#ifdef MAIN_FILE
    xdata unsigned char BootCodeMailBox[MAILBOX_LENGTH] _at_ 0x0000;
    const unsigned char DOWNLOAD_MODE = 0xA5;
#else
    extern xdata unsigned char BootCodeMailBox[];
    extern const unsigned char DOWNLOAD_MODE;
#endif