DEC OS/8 Question (getting an error TOO BIG INIT)

Eric Smith spacewar at
Wed Apr 8 15:58:27 CDT 2020

On Wed, Apr 8, 2020 at 2:54 PM Eric Smith <spacewar at> wrote:

> That stands for "data field too big", i.e., too much data to fit in 4KW.
> That's as opposed to "instruction field", which if too big would mean that
> there's too much code.
> Although I used OS/8 Fortran in the distant past, I never tried to compile
> large Fortran programs or programs that used much data, so I don't know
> what it takes to solve that problem. Maybe there is some way to get Fortran
> to use more than one 4KW field for data, issuing the necessary CDF
> instructions to switch data fields?

Checking the OS/8 Language Reference Manual reveals that I was totally
That stands for Data File too big.
"Product fo number of record times number of blocks per record exceeds
number of blocks in file."
So I have no idea how to fix that.

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