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/*****************************************************************************
8-bit memory accessors
*****************************************************************************/
#ifdef I8086
#if (HAS_I8088||HAS_I80188)
static void configure_memory_8bit(i8086_state *cpustate)
{
cpustate->mem.fetch_xor = 0;
cpustate->mem.rbyte = memory_read_byte_8le;
cpustate->mem.rword = memory_read_word_8le;
cpustate->mem.wbyte = memory_write_byte_8le;
cpustate->mem.wword = memory_write_word_8le;
}
#endif
#endif
/*****************************************************************************
16-bit memory accessors
*****************************************************************************/
static UINT16 read_word_16le(const address_space *space, offs_t addr)
{
if (!(addr & 1))
return memory_read_word_16le(space, addr);
else
{
UINT16 result = memory_read_byte_16le(space, addr);
return result | (memory_read_byte_16le(space, addr + 1) << 8);
}
}
static void write_word_16le(const address_space *space, offs_t addr, UINT16 data)
{
if (!(addr & 1))
memory_write_word_16le(space, addr, data);
else
{
memory_write_byte_16le(space, addr, data);
memory_write_byte_16le(space, addr + 1, data >> 8);
}
}
static void configure_memory_16bit(i8086_state *cpustate)
{
cpustate->mem.fetch_xor = BYTE_XOR_LE(0);
cpustate->mem.rbyte = memory_read_byte_16le;
cpustate->mem.rword = read_word_16le;
cpustate->mem.wbyte = memory_write_byte_16le;
cpustate->mem.wword = write_word_16le;
}
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