gnupic: PIC18E Extended Instruction Set
Subject:
Re: PIC18E Extended Instruction Set
From:
Scott Dattalo ####@####.####
Date:
30 Dec 2004 16:27:04 +0000
Message-Id: <Pine.LNX.4.60.0412300811320.30431@ruckus.brouhaha.com>
On Thu, 30 Dec 2004, Craig Franklin wrote:
> Vangelis Rokas wrote:
>
>> How difficult might be to implement support for the
>> Extended Instruction Set for PIC18F2455/2550/4455/4550
>> (and every other I forget right now...) ???
>>
>>
> For gputils, adding them is pretty involved. Several of the tools will
> require work.
For gpsim, adding the extended instruction will be fairly involved too.
In addition, adding the new processors that support these instructions
will require some work. Finally, it'll be hard to test anything out until
gputils has been updated. So this will take some time. On the other hand,
I've been so much time on gpsim's infrastructure that I've neglected most
of the new upgrades/processors that Microchip has introduced.
BTW, I know this doesn't affect SDCC, but what about the dsPIC tools?
Microchip has released the source for the C-compiler, assembler and linker
(they're part of the gcc tool chain). I don't know if they've updated gdb
or not.
Scott
