	xref		U1DVR
	xref		U0DVR

	xref		net_volume

; Memory Routines.

	xref		BAR$			;'BAR$ 		Symbol is declared in external module.
	xref		BUR$			;'BUR$ 		Symbol is declared in external module.
	xref		zHIGH$			;'zHIGH$ 	Symbol is declared in external module.

; Video module.

	xref 		ADDR_2_ROWCOL 		;'ADDR_2_ROWCOL	Symbol is declared in external module.
	xref		ENADIS_DO_RAM		;'ENADIS_DO_RAM	Symbol is declared in external module.
	xref		DIS_DO_RAM		;'DIS_DO_RAM	Symbol is declared in external module.
	xref		DODATA$			;'DODATA$	Symbol is declared in external module.
	xref		DO_CONTROL		;'DO_CONTROL	Symbol is declared in external module.
	xref		DO_DSPCHAR		;'DO_DSPCHAR	Symbol is declared in external module.
	xref		DO_INVERT_DIS		;'DO_INVERT_DIS	Symbol is declared in external module.
	xref		DO_INVERT_ENA		;'DO_INVERT_ENA	Symbol is declared in external module.
	xref		DO_INVERT_OFF		;'DO_INVERT_OFF	Symbol is declared in external module.
	xref		DO_MASK			;'DO_MASK	Symbol is declared in external module.
	xref		DO_RET			;'DO_RET	Symbol is declared in external module.
	xref		DO_RET1			;'DO_RET1	Symbol is declared in external module.
	xref		DO_SCROLL		;'DO_SCROLL	Symbol is declared in external module.
	xref		DO_TABS			;'DO_TABS	Symbol is declared in external module.
	xref		z_VDCTL			;'z_VDCTL	Symbol is declared in external module.

; Function calls.

	xref 		zBANK			;'zBANK		Symbol is declared in external module.
	xref 		zspace.BYTEIO$		;'BYTEIO$	Symbol is declared in external module.

	xref 		zCHNIO			;'zCHNIO	Symbol is declared in external module.
	xref 		zCKBRKC			;'zCKBRKC	Symbol is declared in external module.

	xref 		DATEz			;'zDATE		Symbol is declared in external module.
	xref 		zDIV16			;'zDIV16	Symbol is declared in external module.
	xref 		zDSP			;'zDSP		Symbol is declared in external module.
	xref 		zDSPLY			;'zDSPLY	Symbol is declared in external module.

	xref 		zGET			;'zGET		Symbol is declared in external module.

	xref 		zHEX16			;'zHEX16	Symbol is declared in external module.
	xref 		zHEX8			;'zHEX8		Symbol is declared in external module.
	xref 		zHEXDEC			;'zHEXDEC	Symbol is declared in external module.

	xref 		zJCL			;'zJCL		Symbol is declared in external module.

	xref 		zKBD			;'zKBD		Symbol is declared in external module.
	xref 		zKEY			;'zKEY		Symbol is declared in external module.
	xref 		zKEYIN			;'zKEYIN	Symbol is declared in external module.
	xref 		zKITSK			;'zKITSK	Symbol is declared in external module.
	xref 		zKLTSK			;'zKLTSK	Symbol is declared in external module.

	xref 		zLOGOT			;'zLOGOT	Symbol is declared in external module.

	xref 		zMSG			;'zMSG		Symbol is declared in external module.
	xref 		zMUL16			;'zMUL16	Symbol is declared in external module.

	xref 		zPRINT			;'zPRINT	Symbol is declared in external module.
	xref 		zPRT			;'zPRT		Symbol is declared in external module.
	xref 		zPUT			;'zPUT		Symbol is declared in external module.

	xref 		zUSA			;'zUSA		Symbol is declared in external module.

	xref 		zVDCTL			;'zVDCTL	Symbol is declared in external module.
	xref		zVDCTL3			;'zVDCTL3	Symbol is declared in external module.

	xref 		zWEOF			;'zWEOF		Symbol is declared in external module.
	xref		zWHERE			;'zWHERE	Symbol is declared in external module.
	xref		zWRITE			;'zWRITE	Symbol is declared in external module.
	xref 		zWRSEC			;'zWRSEC	Symbol is declared in external module.
	xref 		zWRSSC			;'zWRSSC	Symbol is declared in external module.
	xref		zWRTRK			;'zWRTRK	Symbol is declared in external module.


; File control blocks.

	xref		CFGFCB$			;'CFGFCB$	Symbol is declared in external module.
	xref		CFCB$			;'CFCB$		Symbol is declared in external module.
	xref		JFCB$			;'JFCB$		Symbol is declared in external module.
	xref		SFCB$			;'SFCB$		Symbol is declared in external module.
	
; Device control blocks.

	xref		DODCB$			;'DODCB$	Symbol is declared in external module.
	xref		JCLCB$			;'JCLCB$	Symbol is declared in external module.
	xref		JLDCB$			;'JLDCB$	Symbol is declared in external module.
	xref		JDCB$			;'JDCB$		Symbol is declared in external module.
	xref		KIDCB$			;'KIDCB$	Symbol is declared in external module.
	xref		U0DCB$			;'S1DCB$	Symbol is declared in external module.
	xref		SIDCB$			;'SIDCB$	Symbol is declared in external module.
	xref		SODCB$			;'SODCB$	Symbol is declared in external module.
	xref		BRKVEC$			;'BRKVEC$	Symbol is declared in external module.
	xref		CASHK$			;'CASHK$	Symbol is declared in external module.
	xref		CKOPENz			;'CKOPEN@	Symbol is declared in external module.
	xref		CYL_GRN			;'CYL_GRN	Symbol is declared in external module.
	xref		DATE$			;'DATE$		Symbol is declared in external module.
	xref		DAYTBL$			;'DAYTBL$	Symbol is declared in external module.
	xref		DBGSV$			;'DBGSV$	Symbol is declared in external module.
	xref		DCBKL$			;'DCBKL$	Symbol is declared in external module.
	xref		DCT$			;'DCT$		Symbol is declared in external module.
	xref		DSKTYP$			;'DSKTYP$	Symbol is declared in external module.
	xref		DTPMT$			;'DTPMT$	Symbol is declared in external module.
	xref		DVREND$			;'DVREND$	Symbol is declared in external module.
	xref		DVRHI$			;'DVRHI$	Symbol is declared in external module.
	xref		EXTDBG$			;'EXTDBG$	Symbol is declared in external module.
	xref		FDDINT$			;'FDDINT$	Symbol is declared in external module.
	xref		FEMSK$			;'FEMSK$	Symbol is declared in external module.
	xref		HKRES$			;'HKRES$	Symbol is declared in external module.
	xref		INBUF$			;'INBUF$	Symbol is declared in external module.
	xref		INTIM$			;'INTIM$	Symbol is declared in external module.
	xref		INTMSK$			;'INTMSK$	Symbol is declared in external module.
	xref		INTVC$			;'INTVC$	Symbol is declared in external module.
	xref		JRET$			;'JRET$		Symbol is declared in external module.
	xref		KIDATA$			;'KIDATA$	Symbol is declared in external module.
	xref		LBANK$			;'LBANK$	Symbol is declared in external module.
	xref		LDRV$			;'LBANK$	Symbol is declared in external module.
	xref		LSVC$			;'LSVC$		Symbol is declared in external module.
	xref		MAXDAY$			;'MAXDAY$	Symbol is declared in external module.
	xref		COREMIN$		;'MINCOR$$	Symbol is declared in external module.
	xref		MONTBL$			;'MONTBL$	Symbol is declared in external module.
	xref		OPREG_SV_AREA		;'OPREG_SV_AREA	Symbol is declared in external module.
	xref		OPREG_SV_PTR		;'OPREG_SV_PTR$	Symbol is declared in external module.
	xref		ORARETz			;'ORARET@	Symbol is declared in external module.
	xref		OSRLS$			;'OSRLS$	Symbol is declared in external module.
	xref		OSVER$			;'OSVER$	Symbol is declared in external module.
	xref		OVRLY$			;'OVRLY$	Symbol is declared in external module.
	xref		PAKNAM$			;'PAKNAM$	Symbol is declared in external module.
	xref		zPAUSE			;'PAUSE@	Symbol is declared in external module.
	xref		PCSAVE$			;'PCSAVE$	Symbol is declared in external module.
	xref		PDRV$			;'PDRV$		Symbol is declared in external module.
	xref		PHIGH$			;'PHIGH$	Symbol is declared in external module.
	xref		PRDCB$			;'PRDCB$	Symbol is declared in external module.
	xref		PUTAzDE			;'PUTA@DE	Symbol is declared in external module.
	xref		PUT_z			;'PUT_@		Symbol is declared in external module.
	xref		PUT_z_ROWCOL		;'PUT_z_ROWCOL	Symbol is declared in external module.
	xref		ROWCOL_2_ADDR		;'ROWCOL_2_ADDR	Symbol is declared in external module.
	xref		RSTOR$			;'RSTOR$	Symbol is declared in external module.
	xref		RWRITz			;'RWRIT@	Symbol is declared in external module.
	xref		SBUFF$			;'SBUFF$	Symbol is declared in external module.
	xref		SETzEXEC		;'SET@EXEC	Symbol is declared in external module.
	xref		SET_SCROLL		;'SET_SCROLL	Symbol is declared in external module.
	xref		STACK$			;'STACK$	Symbol is declared in external module.
	xref		SVCRET$			;'SVCRET$	Symbol is declared in external module.
	xref		SVCTAB$			;'SVCTAB$	Symbol is declared in external module.
	xref		SYSERR$			;'SYSERR$	Symbol is declared in external module.
	xref		TCB$			;'TCB$		Symbol is declared in external module.
	xref		TIME$			;'TIME$		Symbol is declared in external module.
	xref		TIMER$			;'TIMER$	Symbol is declared in external module.
	xref		TIMSL$			;'TIMSL$	Symbol is declared in external module.
	xref		TMPMT$			;'TMPMT$	Symbol is declared in external module.
	xref		TRACE_INT		;'TRACE_INT	Symbol is declared in external module.
	xref		TYPHK$			;'TYPHK$	Symbol is declared in external module.
	xref		TYPTSK$			;'TYPTSK$	Symbol is declared in external module.
	xref		WRINT$			;'WRINT$	Symbol is declared in external module.
	xref		USTOR$			;'USTOR$	Symbol is declared in external module.
	xref		ZERO$			;'ZERO$		Symbol is declared in external module.
	xref		ZEROAz			;'ZEROA@	Symbol is declared in external module.
	xref		BREAKz			;'BREAK?	Symbol is declared in external module.
	xref		DzFBYT8			;'D@FBYT8	Symbol is declared in external module.
	xref		GET_z_ROWCOL		;'GET_@_ROWCOL	Symbol is declared in external module.
	xref		KCKz			;'KCK@		Symbol is declared in external module.
	xref		DCTBYT8z		;'DCTBYT8@	Symbol is declared in external module.
	xref		DCTFLDz			;'DCTFLD@	Symbol is declared in external module.