[syslinux] HDT: Doesn't work with syslinux

[Miller, Shao]

Thanks for the clarification, Jeffrey.  I wonder if "unsigned char"
makes sense for BIOS drives.  - Shao

-----Original Message-----
From: syslinux-bounces at zytor.com [mailto:syslinux-bounces at zytor.com] On
Behalf Of Jeffrey Hutzelman
Sent: Tuesday, March 31, 2009 11:09
To: For discussion of Syslinux and tftp-hpa
Cc: jhutz at cmu.edu
Subject: Re: [syslinux] HDT: Doesn't work with syslinux

--On Monday, March 30, 2009 10:04:07 PM -0400 "Miller, Shao" 
<Shao.Miller at yrdsb.edu.on.ca> wrote:

> Hmm...  If the proposed change below were implemented, what would
happen
> on the final iteration?
>
> drive == 0xff
>
> then:
>
> drive++;

Now drive is 0x100, which is not <= 0xff, and the loop ends.

You're probably expecting it to wrap around, because something somewhere

only has 8 bits to represent this quantity.  But there is nothing
magical 
about a variable named "drive" that gives it this property; it's
declared 
as an int and so will be at least 16 bits wide.

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