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Fixed accessing to internal map, might need another parameter for address cache "masking" (i.e. SH-1 uses address bit 27 for cache), nw

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This commit is contained in:
angelosa 2015-07-07 22:50:47 +02:00
parent ad346d1cc7
commit 40d00d467d
1 changed files with 36 additions and 10 deletions
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46
src/emu/cpu/sh2/sh2.c
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@ -144,7 +144,7 @@ READ32_MEMBER(sh2_device::sh2_internal_a5)
static ADDRESS_MAP_START( sh2_internal_map, AS_PROGRAM, 32, sh2_device )
AM_RANGE(0x40000000, 0xbfffffff) AM_READ(sh2_internal_a5)
AM_RANGE(0xc0000000, 0xc0000fff) AM_RAM // cache data array
AM_RANGE(0xe0000000, 0xffffffff) AM_READWRITE(sh2_internal_r, sh2_internal_w)
AM_RANGE(0xe0000000, 0xe00001ff) AM_MIRROR(0x1ffffe00) AM_READWRITE(sh2_internal_r, sh2_internal_w)
ADDRESS_MAP_END
static ADDRESS_MAP_START( sh7032_map, AS_PROGRAM, 32, sh1_device )
@ -244,39 +244,65 @@ offs_t sh2_device::disasm_disassemble(char *buffer, offs_t pc, const UINT8 *opro
#define LOG(x) do { if (VERBOSE) logerror x; } while (0)
UINT8 sh2_device::RB(offs_t A)
{
return m_program->read_byte(A & AM);
if((A & 0xf0000000) == 0 || (A & 0xf0000000) == 0x20000000)
return m_program->read_byte(A & AM);
return m_program->read_byte(A);
}
UINT16 sh2_device::RW(offs_t A)
{
return m_program->read_word(A & AM);
if((A & 0xf0000000) == 0 || (A & 0xf0000000) == 0x20000000)
return m_program->read_word(A & AM);
return m_program->read_word(A);
}
UINT32 sh2_device::RL(offs_t A)
{
{
/* 0x20000000 no Cache */
/* 0x00000000 read thru Cache if CE bit is 1 */
return m_program->read_dword(A & AM);
if((A & 0xf0000000) == 0 || (A & 0xf0000000) == 0x20000000)
return m_program->read_dword(A & AM);
return m_program->read_dword(A);
}
void sh2_device::WB(offs_t A, UINT8 V)
{
m_program->write_byte(A & AM,V);
{
if((A & 0xf0000000) == 0 || (A & 0xf0000000) == 0x20000000)
{
m_program->write_byte(A & AM,V);
return;
}
m_program->write_byte(A,V);
}
void sh2_device::WW(offs_t A, UINT16 V)
{
m_program->write_word(A & AM,V);
if((A & 0xf0000000) == 0 || (A & 0xf0000000) == 0x20000000)
{
m_program->write_word(A & AM,V);
return;
}
m_program->write_word(A,V);
}
void sh2_device::WL(offs_t A, UINT32 V)
{
if((A & 0xf0000000) == 0 || (A & 0xf0000000) == 0x20000000)
{
m_program->write_dword(A & AM,V);
return;
}
/* 0x20000000 no Cache */
/* 0x00000000 read thru Cache if CE bit is 1 */
m_program->write_dword(A & AM,V);
m_program->write_dword(A,V);
}
/* code cycles t-bit