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/*====================================================================
filename: gdsp_memory.cpp
project: GCemu
created: 2004-6-18
mail: duddie@walla.com
Copyright (c) 2005 Duddie & Tratax
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
====================================================================*/
#include <stdio.h>
#include "DSPInterpreter.h"
#include "DSPMemoryMap.h"
#include "DSPHWInterface.h"
#include "DSPCore.h"
u16 dsp_imem_read(u16 addr)
{
switch (addr >> 12)
{
case 0: // 0xxx IRAM
return g_dsp.iram[addr & DSP_IRAM_MASK];
case 8: // 8xxx IROM - contains code to receive code for IRAM, and a bunch of mixing loops.
return g_dsp.irom[addr & DSP_IROM_MASK];
default: // Unmapped/non-existing memory
ERROR_LOG(DSPLLE, "%04x DSP ERROR: Executing from invalid (%04x) memory", g_dsp.pc, addr);
return 0;
}
}
u16 dsp_dmem_read(u16 addr)
{
switch (addr >> 12)
{
case 0x0: // 0xxx DRAM
return g_dsp.dram[addr & DSP_DRAM_MASK];
case 0x1: // 1xxx COEF
DEBUG_LOG(DSPLLE, "%04x : Coef Read @ %04x", g_dsp.pc, addr);
return g_dsp.coef[addr & DSP_COEF_MASK];
case 0xf: // Fxxx HW regs
return gdsp_ifx_read(addr);
default: // Unmapped/non-existing memory
ERROR_LOG(DSPLLE, "%04x DSP ERROR: Read from UNKNOWN (%04x) memory", g_dsp.pc, addr);
return 0;
}
}
void dsp_dmem_write(u16 addr, u16 val)
{
switch (addr >> 12)
{
case 0x0: // 0xxx DRAM
g_dsp.dram[addr & DSP_DRAM_MASK] = val;
break;
case 0x1: // 1xxx COEF
ERROR_LOG(DSPLLE, "Illegal write to COEF (pc = %02x)", g_dsp.pc);
break;
case 0xf: // Fxxx HW regs
gdsp_ifx_write(addr, val);
break;
default: // Unmapped/non-existing memory
ERROR_LOG(DSPLLE, "%04x DSP ERROR: Write to UNKNOWN (%04x) memory", g_dsp.pc, addr);
break;
}
}
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