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#include "rockmacros.h"
#include "fastmem.h"
#define D 0 /* direct */
#define C 1 /* direct cgb-only */
#define R 2 /* io register */
#define S 3 /* sound register */
#define W 4 /* wave pattern */
#define F 0xFF /* fail */
const byte himask[256];
const byte hi_rmap[256] =
{
0, 0, R, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
S, S, S, S, S, S, S, S, S, S, S, S, S, S, S, S,
S, S, S, S, S, S, S, S, S, S, S, S, S, S, S, S,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, C, 0, C,
0, C, C, C, C, C, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, C, C, C, C, 0, 0, 0, 0,
C, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
};
const byte hi_wmap[256] =
{
R, R, R, R, R, R, R, R, R, R, R, R, R, R, R, R,
S, S, S, S, S, S, S, S, S, S, S, S, S, S, S, S,
S, S, S, S, S, S, S, S, S, S, S, S, S, S, S, S,
S, S, S, S, S, S, S, S, S, S, S, S, S, S, S, S,
R, R, R, R, R, R, R, R, R, R, R, R, 0, R, 0, R,
0, C, C, C, C, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, R, R, R, R, 0, 0, 0, 0,
R, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, R
};
byte readb(int a)
{
byte *p = mbc.rmap[a>>12];
if (p) return p[a];
else return mem_read(a);
}
void writeb(int a, byte b)
{
byte *p = mbc.wmap[a>>12];
if (p) p[a] = b;
else mem_write(a, b);
}
int readw(int a)
{
if ((a+1) & 0xfff)
{
byte *p = mbc.rmap[a>>12];
if (p)
{
#ifdef ROCKBOX_LITTLE_ENDIAN
#ifndef ALLOW_UNALIGNED_IO
if (a&1) return p[a] | (p[a+1]<<8);
#endif
return *(word *)(p+a);
#else
return p[a] | (p[a+1]<<8);
#endif
}
}
return mem_read(a) | (mem_read(a+1)<<8);
}
void writew(int a, int w)
{
if ((a+1) & 0xfff)
{
byte *p = mbc.wmap[a>>12];
if (p)
{
#ifdef ROCKBOX_LITTLE_ENDIAN
#ifndef ALLOW_UNALIGNED_IO
if (a&1)
{
p[a] = w;
p[a+1] = w >> 8;
return;
}
#endif
*(word *)(p+a) = w;
return;
#else
p[a] = w;
p[a+1] = w >> 8;
return;
#endif
}
}
mem_write(a, w);
mem_write(a+1, w>>8);
}
byte readhi(int a)
{
return readb(a | 0xff00);
}
void writehi(int a, byte b)
{
writeb(a | 0xff00, b);
}
#if 0
byte readhi(int a)
{
byte (*rd)() = hi_read[a];
return rd ? rd(a) : (ram.hi[a] | himask[a]);
}
void writehi(int a, byte b)
{
byte (*wr)() = hi_write[a];
if (wr) wr(a, b);
else ram.hi[a] = b & ~himask[a];
}
#endif
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