#define QUEUE_H #define NCHARS 2560 #define NULL ((char *)0) #define STOPPED 1 #define QPRIORITY 2 struct clist { long c_tail; long c_head; short c_cc; short state; }; #ifdef QUEUE_C short cbuf_next[NCHARS]; char cbuf_word[NCHARS]; struct clist queues[3]; int freelist, freemark; #else extern short cbuf_next[NCHARS]; extern char cbuf_word[NCHARS]; extern struct clist queues[3]; extern int freelist, freemark; #endif #define RCVQUEUE queues[0] /* chars from host */ #define KBDQUEUE queues[1] /* chars from keyboard */ #define OUTQUEUE queues[2] /* chars to send to host */