COMPIL(MTP,<MTAPE,USETI,USETO,RENAME>
	  ,<SAVE,RESTR,GETCHN,SIMIO,FILNAM,X22,X33,X44>
	  ,<MTAPE, USETI, USETO, RENAME ROUTINES>)
.MTP:
HERE (MTAPE)
	PUSHJ	P,SAVE
	MOVE	LPSA,X33
	MOVE	CHNL,-2(P)		;CHANNEL NUMBER
	LOADI7	A,<MTAPE>
	PUSHJ	P,GETCHN
	LDB	C,[POINT 5,-1(P),35]	;PART OF COMMAND CHAR
EXPO <
	MOVEI	B,101
	CAIN	C,11			;MTAPE "I" DOES SPECIAL THINGS.
	 JRST	 MTAPQ			;GO SET IBM COMPABILITY MODE
>;EXPO
	MOVEI	B,0
	JUMPE	C,MTAPQ			;THIS IS DEFINITELY NOT A NO-OP
	MOVE	A,OPTAB			;COMMAND BITS
	MOVE	B,OPTAB+1		;MORE
	TRZE	C,30			;COMPRESS TABLE
	ADDI	C,5
	LSH	C,2			;EACH COMMAND IS 4 BITS
	ROTC	A,(C)			;GET RIGHT COMMAND
	ANDI	B,17			;DO IF SYSTEM DOESN'T
	JUMPE	B,[ERR	<MTAPE: ILLEGAL CODE>,1
		JRST	RESTR]
MTAPQ:	HRLI	B,(<MTAPE>)		;CREATE MTAPE OPERATION
	DPB	CHNL,[POINT 4,B,12]
	XCT	B			;YES, DO IT
	JRST	RESTR
OPTAB:	BYTE (4) 16,17,0,0,3,6,7,13,10	;A,B,,,E,F,R,S,T
	BYTE (4) 11,0,1			;U,,W
HERE (USETI)
↑↑.USETI:
	SKIPA	LPSA,[XCT IOSETI,SIMIO]	;USETI
HERE (USETO)
↑↑.USETO:
	MOVE	LPSA,[XCT IOSETO,SIMIO] ;USETO
	PUSHJ	P,SAVE
	MOVE	CHNL,-2(P)
	LOADI7	A,<USET>
	PUSHJ	P,GETCHN
	MOVE	A,-1(P)			;VALUE TO USETO
	MOVE	LPSA+1,[JRST .+2]	;BE ABLE TO GET BACK
	JRST	LPSA			;GO TO USETI/O
	MOVE	LPSA,X33
	JRST	RESTR
HERE (RENAME)
↑↑.RENAME:
	PUSHJ	P,SAVE
	SETZM	@-1(P)
	MOVE	LPSA,X44
	LOADI7	A,<RENAME>
	MOVE	CHNL,-3(P)
	PUSHJ	P,GETCHN
	PUSHJ	P,FILNAM	;PARSE FILENAME SPEC
	 JRST	 BDSPC		;SPECIFICATION NO GOOD
	MOVE	TEMP,-2(P)
	ROT	TEMP,-=9
	MOVEM	TEMP,FNAME+2(USER)
	XCT	IORENAME,SIMIO	;DO THE RENAME
	 JRST	 RNERR		;NO GOOD
	JRST	RESTR
BDSPC:	HRRZ	TEMP,ERRTST(CDB)	;SEE IF
	TRNE	TEMP,10000		;WILLING TO HANDLE ERROR
	ERR	<RENAME: INVALID FILE SPECIFICATION>,1 ;NO, TELL HIM
	SKIPA	TEMP,[=8]		;ALWAYS REPORT CODE
RNERR:	HRRZ	TEMP,FNAME+1(USER)	;RETURN HORSESHIT NUMBER
	HRROM	TEMP,@-1(P)		;TO THE USER
	JRST	RESTR
ENDCOM(MTP)