gnupic: Re: SDCC RAM banking support?
Subject:
[PIC]: SDCC RAM banking support?
From:
Wojciech Zabolotny ####@####.####
Date:
13 Oct 2001 19:45:34 -0000
Message-Id: <20011013214457.A699@ipebio15.ise.pw.edu.pl>
Hi All,
I have tried to compile a very simple program with sdcc:
data at 0x47 volatile char test1;
data at 0x193 volatile int test2;
void main()
{
for(;;)
{
test1=0x32;
test2=0x1234;
test1=0x42;
test2=0x7654;
}
}
So the RAM bank should be switched between test1 and test2 references.
However in the output assembly file I get (after comments removal):
_00103_DS_
MOVLW 0x32
MOVWF _test1
MOVLW 0x34
MOVWF _test2
MOVLW 0x12
MOVWF (_test2 + 1)
MOVLW 0x42
MOVWF _test1
Is the banking support still lacking in sdcc for pic?
BTW I'd like to create the 16F877 headers for SDCC.
Should the registers be declared as:
data at 0x00 volatile char INDF;
data at 0x01 volatile char PCL;
and so on?
--
TIA & Regards,
Wojciech M. Zabolotny
http://www.ise.pw.edu.pl/~wzab <--> ####@####.####
http://www.debian.org Use Linux - an OS without "trojan horses" inside
