[mod.computers.vax] TPC under VAX11-RSX V2

XBR1YD14@DDATHD21.BITNET (YD14@BR1.THDNET) (02/17/86)

VAX11-RSX V2 Problem ?
----------------------

When upgrading to VAX11/RSX V2 under VMS V4.2 we have the problem
that the famous DECUS Utility TPC doesn't run anymore. TPC
is a fast tape copy utility, written in PDP11 MACRO which came from
the RSX world and is used since years on PDPs and VAXes for copying
DECUS symposia tapes.

TPC caused  no problems with VAX/RSX V1 under VMS V4.2. Now it doesn't
parse correctly device names. A typical command line is e.g.
        MT:=file , or
        file=MT:
During evaluation of the command line the usual calls occur
        CS$1 ..
        CSI$2 ..
        FDAT$R ..
        FDOP$R ..
        CALL .PARSE
and just the .PARSE doesnt deliver the correct device name in the
file descriptor block (FDB + F.FNB + N.DVNM). Instead of the
correct name (MT,MM,DY...) a "$$" is put in that particular location.
Only when a filename is given without a device specifier, then it
parses correctly a "SY".

The problem is not located in the task image, because the same task
built unter VAX/RSX V2 which does't run there, runs under VAX/RSX V1.

Otto Titze                BITNET: XLINTITZ@DDATHD21
Kernphysik TH Darmstadt   ARPA:   XLINTITZ%DDATHD21.BITNET@WISCVM.WISC.EDU