sram.c

/*
# _____     ___ ____     ___ ____
#  ____|   |    ____|   |        | |____|
# |     ___|   |____ ___|    ____| |    \    PS2DEV Open Source Project.
#-----------------------------------------------------------------------
# Copyright ps2dev - http://www.ps2dev.org
# Licenced under Academic Free License version 2.0
# Review ps2sdk README & LICENSE files for further details.
*/
 
#include "acsram_internal.h"
 
int acSramRead(acSramAddr addr, void *buf, int size)
{
    volatile acUint16 *src;
    int i;
 
    src = (volatile acUint16 *)(2 * (addr & 0x7FFF) + 0xB2500000);
    for ( i = size; i > 0; buf = (acUint8 *)buf + 1 )
    {
        --i;
        *(acUint8 *)buf = *(volatile acUint8 *)src++;
    }
    return size - i;
}
 
int acSramWrite(acSramAddr addr, void *buf, int size)
{
    volatile acUint16 *dst;
    int i;
 
    dst = (volatile acUint16 *)(2 * (addr & 0x7FFF) + 0xB2500000);
    for ( i = size; i > 0; ++dst )
    {
        --i;
        *dst = *(acUint8 *)buf;
        buf = (acUint8 *)buf + 1;
    }
    return size - i;
}
 
int acSramModuleStart(int argc, char **argv)
{
    (void)argc;
    (void)argv;
    return 0;
}
 
int acSramModuleStop()
{
    return 0;
}
 
int acSramModuleRestart(int argc, char **argv)
{
    (void)argc;
    (void)argv;
    return 0;
}
 
int acSramModuleStatus()
{
    return 1;
}