SALV - Salvager for the SITS file system.

src/rjl/flopdf.10

@@ -0,0 +1,63 @@
+SMSCSR==177200		;THE CSR FOR THE SMS TO PDP11 INTERFACE
+SMSDBF==SMSCSR+2	;THE DATA BUFFER BYTE
+SMSCMD==SMSDBF+2	;THE COMMAND BUFFER BYTE
+SMSLGT==SMSCMD+2	;LIGHT REGISTER
+SMSBRV==270		;TRAP VECTOR ADDRESS
+SMSTV==SMSBRV
+CLKBRV==100	;CLOCK TRAP ADDRESS
+SMSPRM==173000	;PROM ADDRESS
+SMSPRE==173376	;LAST PROM ADDRESS (CONFIGURATION WORD)
+ SMS60H==1	;IF THIS BIT IS ONE, MACHINE IS 60HZ, ELSE 50HZ
+SMSRST==0	;RESET COMMAND, SECOND BYTE IGNORED
+SMSSEK==1	;SEEK, OR WITH DISK DRIVE_3, SECOND BYTE TRACK ADDRESS
+SMSRED==2	;READ, OR WITH DISK DRIVE_3 AND:
+ SMSDTB==100	 ;DISK TO BUFFER BIT
+ SMSBTH==200	 ;BUFFER TO HOST BIT
+		  ;SECOND BYTE ON READ IS SECTOR
+SMSRID==3	;READ NEXT SECTOR ID, OR WITH DISK DRIVE_3, SECOND BYTE IGNORED
+SMSWRT==4	;WRITE, OR WITH DISK DRIVE_3 AND:
+ SMSBTD==100	 ;BUFFER TO DISK
+ SMSHTB==200	 ;HOST TO BUFFER
+		  ;SECOND BYTE ON WRITE IS SECTOR
+SMSWRD==5	;WRITE WITH DELETED DATA MARK, OTHERWISE SAME AS WRITE
+SMSFMT==6	;FORMAT THE TRACK THE HEADS ARE OVER
+		 ;OR WITH DISK DRIVE_3, SECOND BYTE IS TRACK ADDRESS TO WRITE ON DISK
+SMSSTS==7	;READ STATUS, OR WITH DISK DRIVE_3, SECOND BYTE IGNORED
+
+;STATUS BITS IN CSR
+SMSERR==100000	;ERROR IN OPERATION
+SMSRSB==40000	;RESET BIT
+SMSPWR==4000	;POWER ON DISK DRIVES
+SMSCLE==2000	;CLOCK INTERUPT ENABLE
+SMSST1==1000	;STAT ID BIT 1
+SMSST0==400	;STAT ID BIT 0
+SMSDNE==200	;DONE
+SMSINT==100	;INT ENABLE
+SMSBSY==40	;BUSY
+SMSCMW==20	;WAITING FOR A COMMAND BYTE
+SMSDDR==10	;DATA DIRECTION
+SMSFDO==4	;FDC ON
+SMSXFW==1	;WAITING FOR XFR
+
+;STATUS BITS IN STATUS BYTE
+;COMMAND STATUS
+SMSITA==2	;INVALID TRACK ADDRESS
+SMSISA==4	;INVALID SECTOR ADDRESS
+SMSIBS==10	;INVALID BUFFER SPEC
+;DISK DRIVE STATUS
+SMSDNR==1	;DRIVE NOT READY
+SMSDUS==2	;DRIVE UNSAFE
+SMSDWP==4	;DRIVE WRITE PROTECTED
+SMSNAM==10	;NO ADDRESS MARKS FOUND
+SMSSIP==40	;SEEK IN PROGRESS
+;OPERATION STATUS
+SMSRWA==1	;READ/WRITE ABORTED
+SMSHPE==2	;HEAD POSITIONING ERROR
+SMSDAM==4	;DATA ADDRESS MARK MISSING
+SMSDOV==10	;DATA OVERRUN
+SMSSUR==20	;SECTOR UNRECOVERABLE
+SMSCRC==40	;CRC ERROR
+SMSRWC==100	;READ/WRITE COMPLETE
+SMSDDR==200	;DELETED DATA READ
+
+