@ sign in C variable declaration
问题 I found this header file for PIC microcontrollers by the name of pic1250.h and I'm unable to get the hang of some syntax used in it. The source for the file is: /* * Header file for the Microchip * PIC 12c508 chip * PIC 12c509 chip * Baseline Microcontrollers */ static volatile unsigned char RTCC @ 0x01; static volatile unsigned char TMR0 @ 0x01; static volatile unsigned char PCL @ 0x02; static volatile unsigned char STATUS @ 0x03; static unsigned char FSR @ 0x04; static volatile unsigned