Hi Ken, > Could some one tell me how to interpret an output tape written on > sysut3.bin with Fortran WRITE OUTPUT TAPE statements.
Without seeing the write statements it is hard to tell. But generally the SYSUTx tapes are written in binary and not BCD. > Is bcd2txta the appropriate tool to translate it to something I can > dump with od or hexdump? Like I recommended in my previous email I would use listtape. The -b option will convert binary to ascii. Besides BCD, listtape can also convert CDC display code, Burroughs BCI, Univac code. > Where can I read about the tape header or record format? Under IBSYS each write statement will be one record. If you use Fortran IV under IBJOB you can group records into a block. > I don't know very much about the tape but output from hexdump shows > me familiar strings. If you want to look at the raw tapes I would recommend using P7B format rather then simH. If you use I7090 rather then I7094 you will get tapes written with correct parity. For P7B, bit 7 is the record mark, bit 6 is the parity (even for BCD, odd for Binary), 5-0 the character. SimH tape format as a 4 byte record length before and after each record. Rich -- ========================================================================== Richard Cornwell r...@sky-visions.com http://sky-visions.com LinkedIn: https://www.linkedin.com/in/richard-cornwell-991076107 ========================================================================== _______________________________________________ Simh mailing list Simh@trailing-edge.com http://mailman.trailing-edge.com/mailman/listinfo/simh
