origins of IBM 3740 diskette format

Sun Feb 27 01:47:29 CST 2005

From: "Fred Cisin" <cisin at xenosoft.com>
Subject: Re: origins of IBM 3740 diskette format

> Yes, but,...
>
> In FORTRAN, columns 73 - 80 are reserved for housekeeping, such as
> resequencing dropped decks.
> THerefore, the information content in FORTRAN could be said to be 72 bytes
> per card, NOT 80.
>

That was the same for IBM (DOS) Assembler, Cobol (73-80) and RPG-II (column
1-5 IIRC).

Nico