gnupic: SDCC #pragma memory declarations
Subject:
Re: SDCC #pragma memory declarations
From:
"Kevin L. Pauba" ####@####.####
Date:
5 Jul 2002 12:24:46 -0000
Message-Id: <1025871125.6594.28.camel@dad>
Here is a portion of the p16f873.h file generated by running the
following command:
$ perl inc2h.pl /usr/share/gpasm/header/p16f873.inc >p16f873.h
#pragma maxram 0x1FF
#pragma memmap 0x0020 0x007f RAM 0x100
#pragma memmap 0x00a0 0x00ff RAM 0x100
#pragma memmap 0x0000 0x0000 SFR 0x180 // INDF
#pragma memmap 0x0001 0x0001 SFR 0x100 // TMR0
#pragma memmap 0x0002 0x0002 SFR 0x180 // PCL
#pragma memmap 0x0003 0x0003 SFR 0x180 // STATUS
#pragma memmap 0x0004 0x0004 SFR 0x180 // FSR
#pragma memmap 0x0005 0x0005 SFR 0x000 // PORTA
#pragma memmap 0x0006 0x0006 SFR 0x100 // PORTB
#pragma memmap 0x0007 0x0007 SFR 0x000 // PORTC
#pragma memmap 0x000A 0x000A SFR 0x180 // PCLATH
...
On Fri, 2002-07-05 at 07:04, Ricardo Amezquita Orozco wrote:
>
> --Scott
>
> This means this is usefull yet??
>
> What is the pragma syntax??
>
> Ricardo
>
> On Thu, 4 Jul 2002 23:55:47
> Scott Dattalo wrote:
> >
> > -- now work, thanks to Kevin L. Pauba. I've applied a patch Kevin has
> >created that will:
> >
> > o extract the PIC device-specific memory map from a Microchip
> > .INC file (all of which are distributed with gpasm, btw) and
> > create a C .h file that can be included in an SDCC compiled
> > C program. The memory map is defined as a series of compiler
> > pragmas.
> >
> > o process the #pragmas so that SDCC understands the memory map
> >
> >This is slick! It means that SDCC instantly now supports all mid-range PIC
> >devices (I haven't tested this out, of course). If a new (mid-range PIC)
> >device comes along, then you can create your own device-specific include
> >file without having to modify SDCC's source.
> >
> >
> >In addition to Kevin's patch, I fixed some bugs with the over-zealous
> >register optimizer. It turns out that some registers like PCLATH really
> >are important :).
> >
> >Scott
> >
> >ps. Linas, your a2d.c program has been a quite useful real-life example
> >application. I've mentioned it to Kevin, but in case you're interested,
> >all of the manual bank manipulation stuff can probably be removed now (if
> >not, then I'll fix it).
> >
> >
> >
> >---------------------------------------------------------------------
> >To unsubscribe, e-mail: ####@####.####
> >For additional commands, e-mail: ####@####.####
> >
> >
>
>
> _____________________________________________________
> Supercharge your e-mail with a 25MB Inbox, POP3 Access, No Ads
> and NoTaglines --> LYCOS MAIL PLUS.
> http://www.mail.lycos.com/brandPage.shtml?pageId=plus
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: ####@####.####
> For additional commands, e-mail: ####@####.####
>
