gnupic: #pragma for memory maps
Subject:
Re: #pragma for memory maps
From:
"Ricardo Amezquita Orozco" ####@####.####
Date:
1 Jul 2002 04:24:33 -0000
Message-Id: <KFIJBHCGMPLHLDAA@mailcity.com>
Right now I`m working in the devices.c file, and as soon as the pragma syntax is defined, I can start working in the .h files.
Please let me know
Ricardo
--
On 30 Jun 2002 21:37:02 -050
Kevin L. Pauba wrote:
>How about:
>
>#pragma memmap START END TYPE [ALIAS_MASK]
>
>which is just easier to implement?
>
>If no one else is working on this, I can. I don't want to duplicate
>effort, though.
>
>
>On Thu, 2002-06-27 at 23:55, Scott Dattalo wrote:
>>
>> Ricardo Orozco was working on a program to convert .inc files into .h
>> files. But, so was Kevin. Not deterred, Ricardo proceeded to adapt his
>> program to create the PIC specific memory maps that SDCC needs to allocate
>> registers. In the process, Ricardo suggested that instead of hardcoding
>> this info in SDCC, that we create compiler pragmas that could be placed in
>> the include files. Does anyone have opinions on this?
>>
>> A possible syntax would be:
>>
>> #pragma memmap START END [ALIAS_MASK] TYPE
>>
>> where
>>
>> memmap - the pragma
>>
>> START, END - define the range of memory
>> ALIAS_MASK - bit mask defining how/if the register range is aliased
>> TYPE - type of memory in the range.
>>
>> For example, a partial listing for a 16F877 would look like:
>>
>> #pragma memmap 0x20 0x6f RAM
>> #pragma memmap 0x70 0x7f 0x180 RAM
>> #pragma memmap 0x02 0x04 0x180 SFR
>>
>>
>> The benefit is that as a user you could define a new memory map without
>> having to modify the SDCC source. The detriment is that somebody has to
>> write the code to implement this feature. Hmm.
>>
>> Scott
>>
>>
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