--- /dev/null
+/ RK05 DUMP Program
+/ This program will send a RK05 image out the console port.
+/ The format of the data sent is 0xff (0377) or 0xfd if read error
+/ followed by 256 word of data for each sector.
+/ After the last sector a 0xfe (0376) is sent
+/ with a two byte checksum, low 8 bits first then upper 4.
+/ The words in a sector are sent as three bytes for each 2 words.
+/ 1 = low 8 bits first word
+/ 2 = upper 4 bits first and lower 4 bits second
+/ 3 = upper 8 bits second word
+/
+/ The program (PC) receiving the data should be started before this program
+/
+/ To run start at 0200.
+/ The SR should have the drive # is 9-11
+/ Should halt at label finish with number of recoverable errors in AC
+/ At normal exit hitting cont will restart the program
+/ The current location being read will be displayed in the AC
+/ while running. It is (cylinder * 16 + sector) / 2
+
+/ If a unrecoverable error occurs the program will halt with the error in
+/ the AC. Hit continue to dump more or comment out hlt, search for *****.
+/ The PC program will print out the bad location if an error occurs
+
+ DSKP=6741
+ DCLR=6742
+ DLAG=6743
+ DLCA=6744
+ DRST=6745
+ DLDC=6746
+
+ INAD=030 / Address of serial input, 30 for console
+ KCF2=6000 INAD
+ KSF2=6001 INAD
+ KCC2=6002 INAD
+ KRS2=6004 INAD
+ KIE2=6005 INAD
+ KRB2=6006 INAD
+
+ OUTAD=040 / Address of serial output, 40 for console
+ TFL2=6000 OUTAD
+ TSF2=6001 OUTAD
+ TCF2=6002 OUTAD
+ TPC2=6004 OUTAD
+ TSK2=6005 OUTAD
+ TLS2=6006 OUTAD
+
+ *20
+ERRCNT, 7760 / Stop when err count = 0, init at startup
+DRIVE, 0 / Drive # * 2
+ERRCN2, 0 / Total # of errors
+RETCNT, 200 / Max retries
+K0200, 0200
+K4000, 4000
+FLD, 0
+TRACK, 0
+EXBIT, 0
+CURBUF, 1000 / Address to read data into
+LSTBUF, 1000 / Address to send data from
+BUFORG, 1000 / First buffer address
+BUFSZ, 400
+MAXTRK, 4537
+REDDAT, 0000
+LOC, 0
+TEMP, 0
+MASK1, 17
+MASK2, 360
+FF, 377
+FE, 376
+FD, 375
+K6, 6
+CHKSUM, 0
+ DECIMAL
+BLKSZ, -128
+ OCTAL
+LEN, 0
+READST, 377
+PUNF, PUN
+SENDF, SEND
+READF, READ
+
+ *1000
+ 1234
+ 4321
+
+ *200
+START, CAF
+ CLA CLL OSR / Init variables changed during run
+ RAL
+ AND K6 / Clear out high bits such as 0200 start address
+ DCA DRIVE
+ DCA TRACK
+ DCA EXBIT
+ DCA CHKSUM
+ TAD RETCNT
+ CMA
+ DCA ERRCNT
+ DCA ERRCN2
+ JMS RECAL
+
+DUMP, JMS I READF / Start read operation
+DMPLP, JMS CHKRD / Wait until done and check for errors
+ JMS INCTRK / Set read loc to next sector
+ SZA
+ JMP LAST / Last, send checksum
+ CLA
+ TAD CURBUF
+ DCA LSTBUF / Save buffer data read into for dumping
+ TAD CURBUF / And setup to read into next buffer
+ TAD BUFSZ
+ AND BUFSZ
+ TAD BUFORG
+ DCA CURBUF
+ JMS I READF / Start the read
+ JMS I SENDF / Send the last buffer
+ JMP DMPLP / And check read started etc
+
+RECAL, 0
+ CLA CLL IAC / Recal drive, clear errors and set to cyl 0
+ DCLR / From manual
+ TAD DRIVE
+ DLDC
+ CLA CLL CML RTL
+ DCLR
+ DSKP
+ JMP .-1
+ TAD K0200
+ TAD DRIVE
+ DLDC
+ DSKP
+ JMP .-1
+ DRST
+ CIA
+ TAD K4000
+ SZA CLA
+ JMP BADSTA
+ JMP I RECAL
+ /JMP DUMP
+BADSTA, HLT
+
+LAST, CLA / Send FE and -checksum of all words
+ TAD CURBUF
+ DCA LSTBUF
+ JMS I SENDF
+ CLA CLL
+ TAD FE
+ JMS I PUNF
+ CLA CLL
+ TAD CHKSUM
+ CIA
+ JMS I PUNF
+ CLA CLL
+ TAD CHKSUM
+ CIA
+ RTL
+ RTL
+ RAL
+ AND MASK1
+ JMS I PUNF
+ CLA
+ TAD ERRCN2 / Leave AC with # of errors
+FINISH, HLT / Normal good halt
+ JMP START
+
+CHKRD, 0
+ CLA CLL
+ TAD FF / Set good read flag
+ DCA READST
+ CLA CLL / Display address reading in AC
+ TAD EXBIT
+ RAR
+ TAD TRACK
+ RAR
+ DSKP / Done?
+ JMP .-1
+ DRST / Any errors
+ CIA
+ TAD K4000
+ SZA CLA
+ JMP ERROR
+ TAD RETCNT / Reset error counter for next read
+ CMA
+ DCA ERRCNT
+ JMP I CHKRD
+
+ERROR, ISZ ERRCN2 / Inc total # of errors
+ ISZ ERRCNT / To many errors?
+ JMP RETRY
+ DRST / Yes, leave error in AC and halt
+/ HLT / ********* Put in to halt on errors
+ JMS RECAL
+ CLA CLL
+ TAD FD / Set bad read flag
+ DCA READST
+ TAD RETCNT / Reset error counter for next read
+ CMA
+ DCA ERRCNT
+ JMP I CHKRD
+RETRY,
+ JMS RECAL / No, recal drive and try again
+ JMP DUMP /
+
+
+INCTRK, 0 / Increment track and exbit value for next sector
+ CLA CLL / AC non zero on return if done
+ TAD EXBIT
+ SZA
+ JMP CHKCYL
+INC2, ISZ TRACK
+ JMP I INCTRK
+ ISZ EXBIT
+ JMP I INCTRK
+ HLT
+CHKCYL, CLA
+ TAD TRACK
+ CIA
+ TAD MAXTRK
+ SNA
+ JMP FIN
+ CLA
+ JMP INC2
+FIN, CLA IAC
+ JMP I INCTRK
+
+ PAGE
+READ, 0
+ CLA CLL IAC / Standard read from manual
+ DCLR
+ TAD CURBUF
+ DLCA
+ TAD DRIVE
+ TAD REDDAT
+ TAD FLD
+ TAD EXBIT
+ DLDC
+ TAD TRACK / Display address reading in AC
+ DLAG
+ JMP I READ
+
+SEND, 0 / Send data, each sector starts with FF
+ CLA CLL / then 2 12 bit words in 3 bytes
+ TAD LSTBUF
+ DCA LOC
+ TAD BLKSZ
+ DCA LEN
+ CLA CLL
+ TAD READST
+ JMS PUN
+OUT, CLA CLL
+ TAD I LOC
+ TAD CHKSUM / Keep checksum of all words sent
+ DCA CHKSUM
+ TAD I LOC
+ JMS PUN
+ CLA CLL
+ TAD I LOC
+ RTL / Shift top 4 bits to low 4
+ RTL
+ RAL
+ AND MASK1
+ DCA TEMP
+ ISZ LOC
+ TAD I LOC
+ TAD CHKSUM
+ DCA CHKSUM
+ TAD I LOC
+ RTL
+ RTL
+ AND MASK2
+ TAD TEMP
+ JMS PUN
+ CLA CLL
+ TAD I LOC
+ RTR
+ RTR
+ JMS PUN
+ ISZ LOC
+ ISZ LEN
+ JMP OUT
+ JMP I SEND
+
+PUN, 0
+/ PLS / Punch for testing with emulator
+ TLS2 / Send out console
+ CLA CLL
+ TAD EXBIT
+ RAR
+ TAD TRACK
+ RAR
+/ PSF
+ TSF2 /Wait until character sent
+ JMP .-1
+ JMP I PUN
+
+ $
projects / pdp8.git / blobdiff