Msg: 6498 *Conference*
05-06-96 23:38:14
From: GARY WEBER
To : RON WIESEN
Subj: LAPTOP IDENTITY PROGRAM
Ron - I just wanted to confirm to you that the identity code that you put together does, indeed, properly identify my 8300 and 8201, as well as my own Tandy 100. I do have a question about the IBM PC identification, however. Due to the segmented memory architecture of an IBM PC (or compatibles), any PEEK that you would do in memory would be entirely relative to whichever 64K memory segment your program occupied. How is it, then, that a peek of 31009 equaling 1 identifies an IBM PC? You're PEEKing IBM's RAM here, not ROM. About the only way I know if to perform an IBM PC identification would be to look at the BIOS of the machine, which would require setting the SEGMENT address to start at F000, and then the actual PEEK would be done within that 64K of ROM. Just curious! Gary.