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/*
Copyright 2016-2017 StapleButter
This file is part of melonDS.
melonDS 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 3 of the License, or (at your option)
any later version.
melonDS 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 melonDS. If not, see http://www.gnu.org/licenses/.
*/
#include <stdio.h>
#include <string.h>
#include "NDS.h"
#include "Wifi.h"
namespace Wifi
{
u16 BBCnt;
u8 BBWrite;
u8 BBRegs[0x100];
u8 BBRegsRO[0x100];
void Reset()
{
BBCnt = 0;
BBWrite = 0;
memset(BBRegs, 0, 0x100);
memset(BBRegsRO, 0, 0x100);
#define BBREG_FIXED(id, val) BBRegs[id] = val; BBRegsRO[id] = 1;
BBREG_FIXED(0x00, 0x6D);
BBREG_FIXED(0x0D, 0x00);
BBREG_FIXED(0x0E, 0x00);
BBREG_FIXED(0x0F, 0x00);
BBREG_FIXED(0x10, 0x00);
BBREG_FIXED(0x11, 0x00);
BBREG_FIXED(0x12, 0x00);
BBREG_FIXED(0x16, 0x00);
BBREG_FIXED(0x17, 0x00);
BBREG_FIXED(0x18, 0x00);
BBREG_FIXED(0x19, 0x00);
BBREG_FIXED(0x1A, 0x00);
BBREG_FIXED(0x27, 0x00);
BBREG_FIXED(0x4D, 0x00); // 00 or BF
BBREG_FIXED(0x5D, 0x01);
BBREG_FIXED(0x5E, 0x00);
BBREG_FIXED(0x5F, 0x00);
BBREG_FIXED(0x60, 0x00);
BBREG_FIXED(0x61, 0x00);
BBREG_FIXED(0x64, 0xFF); // FF or 3F
BBREG_FIXED(0x66, 0x00);
for (int i = 0x69; i < 0x100; i++)
{
BBREG_FIXED(i, 0x00);
}
#undef BBREG_FIXED
}
u16 Read(u32 addr)
{
addr &= 0x7FFF;
switch (addr)
{
case 0x158:
return BBCnt;
case 0x15C:
if ((BBCnt & 0xF000) != 0x6000)
{
printf("WIFI: bad BB read, CNT=%04X\n", BBCnt);
return 0;
}
return BBRegs[BBCnt & 0xFF];
case 0x15E:
return 0; // cheap
}
printf("WIFI: unknown read %08X\n", addr);
return 0;
}
void Write(u32 addr, u16 val)
{
addr &= 0x7FFF;
switch (addr)
{
case 0x158:
BBCnt = val;
if ((BBCnt & 0xF000) == 0x5000)
{
u32 regid = BBCnt & 0xFF;
if (!BBRegsRO[regid])
BBRegs[regid] = val & 0xFF;
}
return;
case 0x15A:
BBWrite = val;
return;
}
printf("WIFI: unknown write %08X %04X\n", addr, val);
}
}
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