Subject: unused macros removed from machparam.h (#63)
Index:	sys/pdp/machparam.h 2.11BSD

Description:
	The macro DELAY has been retired in favor of the delay()
	routine in mch_xxx.s.  The last kernel/networking module
	(dhv.c) which used DELAY has been updated.  The space savings
	from calling a routine rather than inlining the delay were
	quite noticeable.

	The macro SPLX is a leftover from the 2.9/2.10BSD days
	(i believe) and has not been used in a _long_ time.  

Repeat-By:
	Examine the sources.

Fix:
	Apply the patch below.  

*** /sys/pdp/machparam.h.old	Sun May 27 20:28:40 1990
--- /sys/pdp/machparam.h	Wed Jan  8 22:48:06 1992
***************
*** 125,139 ****
  #define	USERMODE(ps)	(((ps) & PSL_USERSET) == PSL_USERSET)
  #define	BASEPRI(ps)	(((ps) & PSL_IPL) == 0)
  
- /*
-  * Very crude attempt to define the relative DELAY loop speeds of various
-  * processors.
-  */
- #ifdef PDP==44 || PDP==53 || PDP==70 || PDP==73 || PDP==83 || PDP==84
  #define	DELAY(n)	{ long N = ((long)(n))<<1; while (--N > 0); }
- #else
- #define	DELAY(n)	{ long N = (n); while (--N > 0); }
- #endif
  
  /*
   * Treat ps as byte, to allow restoring value from mfps/movb
--- 125,131 ----
***************
*** 141,151 ****
   */
  #define	PS_LOBYTE	((char *)0177776)
  #define	splx(ops)	(*PS_LOBYTE = ((char)(ops)))
- #define	SPLX(ops) { \
- 	if (BASEPRI(ops) && netisr) \
- 		netintr(); \
- 	splx(ops); \
- }
  
  /*
   * high int of a long
--- 133,138 ----