Problems with addressing in Z80 firmware using IAR

iar for z80

Hi All,

Anyone here familiar with IAR C compiler for the Z80?

I've just inherited a project that was written for a Z80 platform using IAR 2.01G compiler.

It’s using banked memory to cross the 64k boundary.

I've a problem addressing variables across memory banks.

Consider the following example:

///////////// file: moduleA.c ////////////////////////////////
//Module A:

#pragma memory=dataseg(MOD_A_DATA)
MOD_A_STRUC mod_a_struc;

#pragma memory=constseg(MOD_A_CONST)
const char teststr[]="test string";

#pragma memory=default

#pragma codeseg(MOD_A_CODE)
Void MOD_A_SET(MOD_A_STRUC * m, int x, int y)
{
m->member1 = x;
m->member2 = y;
}

int MOD_A_GET1(MOD_A_STRUC * m, int x, int y)
{
return m->member1;
}

int MOD_A_GET2(MOD_A_STRUC * m, int x, int y)
{
return m->member2;
}
/////////////// end module A ////////////////////////////////




Now the main module:


///////////// file: main.c ////////////////////////////////
//Module main:

#pragma memory=dataseg(MOD_A_DATA)
extern MOD_A_STRUC mod_a_struc;

#pragma memory=constseg(MOD_A_CONST)
extern const char teststr[];

#pragma memory=default
void main(void)
{
int I, j;
MOD_A_SET(mod_a_struc, 0x12, 0x34);
i = MOD_A_GET1(mod_a_struc);
j = MOD_A_GET2(mod_a_struc);

printf("%s : %i %i\n\r", teststr, i, j );
}

///////////// end module main ////////////////////////////////


The calls to the set & get function don't seem to address the right mod_a_struc in memory.

What am I doing wrong?!!!

Thanks & best regards,

Waleed Hasan