Re: Need help with large file reading and writing.

Now I am biased towards running out of disc space as the problem under
discussion, if 400k files stop after 32 files being opened, while with
double that size, it stops after 10. If there was a pure file
count/memory problem (counts of Windows file buffer and control
blocks), it would be always at 10 (say); so YES, check for disc space
availability.

And yes, DCB's (Data Control Block) counts ARE an issue (also known as
FCB File Control Blocks) in all MSDOS from 1.x up to the most recent
issue of DOS (v7, I think) and those DOS emulators still present in NT,
XP and MAC, and important if you compile and TARGET for a DOS O/S
instead of Windows, as you can with MS Professional Fortran. (I use F77
whenever possible, else use CVF 6.6 for pure Windows if I need port I/O
which is not now supported in the DOS emulator). But you can use long
names, because DOS only uses the control part of the DCB after locating
the file from the specified full name; you won't find all the file name
in the DCB anymore.

Terence Wright

.

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