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[avr-gcc-list] AT90USB82 / AT90USB162 architecture?
From: |
Paulo Marques |
Subject: |
[avr-gcc-list] AT90USB82 / AT90USB162 architecture? |
Date: |
Fri, 30 May 2008 19:25:10 +0100 |
User-agent: |
Thunderbird 1.5.0.14 (X11/20071210) |
Hi all,
I was trying to determine if these devices have multiply instructions or
not.
The datasheet doesn't show any MUL* instructions in the "Instruction Set
Summary" section, but the avr-libc documentation pages at:
http://www.nongnu.org/avr-libc/user-manual/using_tools.html
show these devices as "avr5" which has multiply instructions, and at
least avr-gcc 4.2.2 also emits multiply instructions for these devices.
Note that the AT90USB64x/128x variants do have MUL* instructions in
their datasheets.
Is this a bug in the current tools (binutils/gcc/documentation)?
--
Paulo Marques
Software Development Department - Grupo PIE, S.A.
Phone: +351 252 290600, Fax: +351 252 290601
Web: www.grupopie.com
"I used to be indecisive, but now I'm not so sure."
- [avr-gcc-list] AT90USB82 / AT90USB162 architecture?,
Paulo Marques <=