Add short NSALV documentation.

doc/README.md

@@ -29,3 +29,4 @@
 - PDSET: [manual](sysdoc/pdset.info)
 - DUMP: [manual](_info_/dump.info), [format](sysdoc/dump.format)
 - DSKDMP: [commands](sysdoc/dskdmp.order)
+- NSALV: [commands](kshack/nsalv.order)

doc/kshack/nsalv.order

@@ -0,0 +1,38 @@
+The NSALV user interface is quite spartan.  All there is, are machine
+code routines entered with the DDT $G command.  They are listed below.
+
+For normal use, CHKR and GOGO would be the most common commands.  When
+installing a new disk pack, MARK, TRAN, and FESET are useful to
+prepare the file system.
+
+CHKR	;SALVAGER
+GOGO	;SALVAGER - (AUTO FOR ALL DRIVES)
+
+GETSTS	;GET CONTROLLER AND CURRENT DRIVE STATUS
+MARK	;FORMAT PACK
+COPY	;COPY BLOCK TO BLOCK
+UCOP	;COPY UDIRS FROM DRIVE TO DRIVE
+DUP	;DUPLICATE ENTIRE DISC PACK
+UNLOCK	;TEST & UNLOCK A BLOCK
+LISTF	;PRINT USER DIRECTORY ON LPTR
+
+ZAP	;ZERO DIR BLOCKS, WRITE OUT EMPTY TUT,MFD, WRITE READIN BLOCK
+TRAN	;LOAD FROM MAG TAPE UNIT 5
+		; (KS code ignores unit number says JTW)
+CTRAN	;LOAD FROM CHAOS NET
+NEWUFD	;CREATE NEW USER DIR
+MFDR	;TRY TO RECONSTRUCT MFD FROM USER DIRS
+REMAP	;REMAP PACK #S AND FIX UFDS
+RDHEAD	;READ HEADER FROM TRACK
+SPKID	;SET PACK ID IN TUT
+SECOND	;SET SECONDARY PACK NAME
+MARK69	;FINISH FORMATTING PACK
+READ	;READ and WRITE the disk
+
+FESET	;Set pointer to front end filesystem for KS10'S 8080 console
+
+QACT	;Active disks
+HCRASH	;VARIABLE TO BE SET NON-ZERO IF DUP'ING A DISK AFTER HEAD CRASH
+NOQUES	;IF NON-ZERO, NO QUESTIONS IN GOGOX MODE
+FERRS	;COUNT OF CORRECTABLE ERRORS
+CERRS	;COUNT OF ECC-CORRECTED ERRORS (RP04/6 ONLY)