DOS programming

Hi guys,

I'm writing a DOS program, and I need to know the largest file number that can be returned. i.e. the value of FILES= in config.sys. Without reading the CONFIG.SYS file or calling INT 21 OPEN until I get error 4, how can I determine what that value is?

Btw Google fails me, I've already tried that

Do it the traditional way: decide on your own limit and tell your users to make sure FILES is larger than that.

Hah.