Re: Editing .exe and .com files

[holmgrn@xxxxxxxx]

> I believe editing binary files in Xywrite will run afoul of some word
> processing habits, such as the problem with a Control-z (decimal 26, hex
> 1A). In most of the versions of Xy and NB, the file ceases to import at
> Control-Z.

Not if you set default 1A=1. But it is insane to use XyWrite to edit
EXEcutables. Many (MANY) characters are not what the display
reports them to be. Characters which you input may be written as
3-byte pseudo-characters;
XyWrite simply will not permit you to log them in 1-byte form.
Many sequences will inadvertently form, and be displayed as,
3-byte mnemonics that are misleading. There are _hundreds_ of
these 3-byte sequences (most are undocumented because they're
meaningless). There are sequences which XyWrite will import
(read) improperly or even delete (Ascii-0), and then write these
errors to disk -- whether you edit the file or not! XyWrite is
great for writing code, but it isn't intended as a binary editor.
 Use a zapper.

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Robert J. Holmgren holmgrn@xxxxxxxx
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