jdc@naucse.UUCP (John Campbell) (05/19/88)
I'm trying to understand ANSI tapes as used by VMS (DECFILE11A). In particular, the HDR3 records--which store RMS information--do not seem directly related to a DUMP/HEADER/NOFORMAT as suggested by my documentation. The maximum record size and record format byte seem evident and, further along, the block size, etc. A direct correlation with XABFHC or the file header is alluding me, however. Does anyone have a description of the fields and their values for HDR3 records? (If you have all the HDR formats I could double check my own research/guesses.) If there is enough interest I'll post the result to this group. Hopefully, no one else really needs this info... The following header records (with my quick notes) follows. The first few are named for their rat.rfm values: e.g. CR.VAR-->rat=cr, rfm=var. -------------------------HEADERS of different file types-------------- HDR1CR.VAR TEST1 00010001000105 88139 00000 000000DECFILE11A HDR2D0204800087 00 53 - record size (max in hex) | | 02 - rfm variable | | HDR30053020200000000000100000000000000000000000000000000000000000000 HDR4 | 00 | rat ? HDR1CR.STMLF TEST1 00010002000105 88139 00000 000000DECFILE11A HDR2D0204802048 00 HDR30000020500000000000100000000000000000000000000000000000000000000 HDR4 00 HDR1BLK.FIX TEST1 00010003000106 88139 00000 000000DECFILE11A m field! HDR2F0204800080 M 00 rec size block_size HDR30050000100000000000100000000000000000050000000000000000000000000 HDR4 00 HDR1FTN.VFC TEST1 00010004000106 88139 00000 000000DECFILE11A a field! HDR2D0204800092 A 00 HDR30056010300000000000100000200000000000000000000000000000000000000 HDR4 00 HDR1BUILD.C TEST1 00010005000111 88139 00000 000000DECFILE11A HDR2D0204800087 00 HDR30053020200000000000100000000000000000000000000000000000000000000 HDR4 00 HDR1BUILD.OBJ TEST1 00010006000109 88139 00000 000000DECFILE11A HDR2D0204800516 M 00 HDR302000002000000000001000000000000000A0200000000000000000000000000 HDR4 00 HDR1BUILD.EXE TEST1 00010007000108 88139 00000 000000DECFILE11A HDR2F0204800512 M 00 block size! HDR30200000100000000000100000000000000000200000000000000000000000000 HDR4 00 HDR1DIR.OUT TEST1 00010008000100 88139 88139 000000DECFILE11A HDR2D0204802048 00 HDR30000020200000000000100000000000000000000000000000000000000000000 HDR4 00 -- John Campbell ...!arizona!naucse!jdc unix? Sure send me a dozen, all different colors.