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From:	Jason Mills <jmills AT cs DOT mun DOT ca>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: Timer inside interrupt handler
Date:	Sun, 24 Oct 2004 16:16:35 -0230
Organization:	Memorial University of Newfoundland
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Martin Str|mberg wrote:

> Jason Mills <jmills AT cs DOT mun DOT ca> wrote:
> 
>>I did come across the following on
>>the newgroup. Does it implement what you suggest?
> 
> 
> Yes, but...
> 
> 
>>   Convert the real mode segment:offset pair to a linear address offset
>>   (relative to _dos_ds) like this:
> 
> 
>>   0x40 * 16 + 0x6c = 0x460
> 
> 
> Looks like there's some error here. 0x40 * 16 + 0x6c = 0x46c. Note
> "0x46" and a "c". Or the left hand side should read "0x40 * 16 +
> 0x60".
> 
> 
> Right,
> 
> 					MartinS

You are correct. I looked at the source for uclock(), which also
uses the bios tick counter (I found out after posting earlier),
0x46c is the require offset.

Jason

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