[HP-75] Cat$ doubt


What is the command I use to access the file names from the Digital Tape Drive equal to the command x$=cat$(n)?


The example in the HPIL manual is F$=CAT$(2,":MASSMEM") which would set F$ equal to the the second file name on the mass storage device MASSMEM.


It did not work
In which the manual page and I saw this information.

F$=CAT$(2,":MASSMEM") when I run it says that is missing a parentheses after the comma. :-(

Edited: 3 Dec 2011, 7:25 p.m.


Yes sorry need to learn how to read, that is the syntax for a 71B, trying to figure out what will work on a 75


This thread has discussions on ways to get the HP-75 more functional as an HP-IL controller.

Edited: 4 Dec 2011, 9:02 a.m. after one or more responses were posted


Seems a colon got dropped from you link I think you meant http://www.hpmuseum.org/cgi-sys/cgiwrap/hpmuseum/archv015.cgi?read=77316


Thanks. I've corrected the link.


Ok its seems that you need an IO ROM for this. In the IO ROM there is a function TCAT$. For example my 75C with an IO ROM it auto assigns my diskette drive to be :M1 on the command line I enter F$=TCAT$(':M1',2) @ DISP F$ and it displays the file name of the second file on the diskette in the drive. This should work the same way for a tape drive, I would try it but since getting a diskette drive I don't use my tape drives anymore and have cleared all of my tapes.

If you don't have an IO ROM there may be a LEX file available that provides this function, or you could read and parse the raw directory block from the tape.

Edited: 3 Dec 2011, 8:51 p.m. after one or more responses were posted


What LEX file ?


I don't know sorry, I said there MAY be one, not that I knew of one. I would like to catalog all the LEX files on the various exchange diskettes made available on this site, but so far I have not got around to it, it is easy using the HELP LEX to find the keywords, but sometimes figuring out the syntax to go with the keywords is difficult.

Possibly Related Threads...
Thread Author Replies Views Last Post
  HP 75 Assembly Language Michael Fehlhammer 7 1,963 10-01-2012, 08:32 AM
Last Post: Michael Fehlhammer
  [WP-34s] CAT documentation, manual printing DRAFT Alexander Oestert 10 2,249 04-05-2012, 02:48 PM
Last Post: Les Wright
  ODS Data utilities (HP-75) Raymond Wiker 2 1,430 03-13-2012, 08:19 PM
Last Post: Paul Berger (Canada)
  Information that may be of interest to HP-75 users posted Paul Berger (Canada) 1 1,134 02-04-2012, 08:03 PM
Last Post: Geir Isene
  GETROM doubt robertoataulfo 7 1,884 01-12-2012, 04:24 PM
Last Post: robertoataulfo
  CCD OS/X SAVEROM and GETROM doubt. robertoataulfo 2 910 01-11-2012, 01:47 PM
Last Post: robertoataulfo
  HP-75 CATALOG 2.8 robertoataulfo 0 629 12-30-2011, 04:24 PM
Last Post: robertoataulfo
  HP-75 CATALOG 2.7 robertoataulfo 0 574 12-26-2011, 07:03 PM
Last Post: robertoataulfo
  HP-75 CATALOG 2.6 robertoataulfo 0 672 12-21-2011, 07:02 AM
Last Post: robertoataulfo
  HP-75 CATALOG 2.5 robertoataulfo 0 620 12-17-2011, 09:41 AM
Last Post: robertoataulfo

Forum Jump: