static void galpani2_mcu_nmi(void)
{
UINT32 mcu_list, mcu_command, mcu_address, mcu_src, mcu_dst, mcu_size;
/* "Last Check" */
galpani2_write_kaneko();
for ( mcu_list = 0x100020; mcu_list < (0x100020 + 0x40); mcu_list += 4 )
{
mcu_command = cpunum_read_byte(0, mcu_list + 1 );
mcu_address = 0x100000 +
(cpunum_read_byte(0, mcu_list + 2)<<8) +
(cpunum_read_byte(0, mcu_list + 3)<<0) ;
switch (mcu_command)
{
case 0x00:
break;
case 0x0a: // Copy N bytes from RAM1 to RAM2
mcu_src = (cpunum_read_byte(0, mcu_address + 2)<<8) +
(cpunum_read_byte(0, mcu_address + 3)<<0) ;
mcu_dst = (cpunum_read_byte(0, mcu_address + 6)<<8) +
(cpunum_read_byte(0, mcu_address + 7)<<0) ;
mcu_size = (cpunum_read_byte(0, mcu_address + 8)<<8) +
(cpunum_read_byte(0, mcu_address + 9)<<0) ;
logerror("CPU #0 PC %06X : MCU executes command $A, %04X %02X-> %04x\n",activecpu_get_pc(),mcu_src,mcu_size,mcu_dst);
for( ; mcu_size > 0 ; mcu_size-- )
{
mcu_src &= 0xffff; mcu_dst &= 0xffff;
cpunum_write_byte(1,0x100000 + mcu_dst,cpunum_read_byte(0,0x100000 + mcu_src));
mcu_src ++; mcu_dst ++;
}
/* Raise a "job done" flag */
cpunum_write_byte(0,mcu_address+0,0xff);
cpunum_write_byte(0,mcu_address+1,0xff);
break;
default:
/* Raise a "job done" flag */
cpunum_write_byte(0,mcu_address+0,0xff);
cpunum_write_byte(0,mcu_address+1,0xff);
logerror("CPU #0 PC %06X : MCU ERROR, unknown command %02X\n",activecpu_get_pc(),mcu_command);
}
/* Erase command? */
cpunum_write_byte(0,mcu_list + 1,0x00);
}
}
static void copy_from_memory (int cpu, int addr, UINT8 *dest, int num_bytes)
{
int i;
for (i=0; i<num_bytes; i++)
{
dest[i] = cpunum_read_byte (cpu, addr+i);
}
}
/* safe_to_load checks the start and end values of each memory range */
static int safe_to_load (void)
{
struct mem_range *mem_range = state.mem_range;
while (mem_range)
{
if (cpunum_read_byte (mem_range->cpu, mem_range->addr) !=
mem_range->start_value)
{
return 0;
}
if (cpunum_read_byte (mem_range->cpu, mem_range->addr + mem_range->num_bytes - 1) !=
mem_range->end_value)
{
return 0;
}
mem_range = mem_range->next;
}
return 1;
}
static void read_buffer_from_dma(struct ide_state *ide)
{
int bytesleft = IDE_DISK_SECTOR_SIZE;
UINT8 *data = ide->buffer;
// LOG(("Reading sector from %08X\n", ide->dma_address));
/* loop until we've consumed all bytes */
while (bytesleft--)
{
/* if we're out of space, grab the next descriptor */
if (ide->dma_bytes_left == 0)
{
/* if we're out of buffer space, that's bad */
if (ide->dma_last_buffer)
{
LOG(("DMA Out of buffer space!\n"));
return;
}
/* fetch the address */
ide->dma_address = cpunum_read_byte(ide->dma_cpu, ide->dma_descriptor++ ^ ide->dma_address_xor);
ide->dma_address |= cpunum_read_byte(ide->dma_cpu, ide->dma_descriptor++ ^ ide->dma_address_xor) << 8;
ide->dma_address |= cpunum_read_byte(ide->dma_cpu, ide->dma_descriptor++ ^ ide->dma_address_xor) << 16;
ide->dma_address |= cpunum_read_byte(ide->dma_cpu, ide->dma_descriptor++ ^ ide->dma_address_xor) << 24;
ide->dma_address &= 0xfffffffe;
/* fetch the length */
ide->dma_bytes_left = cpunum_read_byte(ide->dma_cpu, ide->dma_descriptor++ ^ ide->dma_address_xor);
ide->dma_bytes_left |= cpunum_read_byte(ide->dma_cpu, ide->dma_descriptor++ ^ ide->dma_address_xor) << 8;
ide->dma_bytes_left |= cpunum_read_byte(ide->dma_cpu, ide->dma_descriptor++ ^ ide->dma_address_xor) << 16;
ide->dma_bytes_left |= cpunum_read_byte(ide->dma_cpu, ide->dma_descriptor++ ^ ide->dma_address_xor) << 24;
ide->dma_last_buffer = (ide->dma_bytes_left >> 31) & 1;
ide->dma_bytes_left &= 0xfffe;
if (ide->dma_bytes_left == 0)
ide->dma_bytes_left = 0x10000;
// LOG(("New DMA descriptor: address = %08X bytes = %04X last = %d\n", ide->dma_address, ide->dma_bytes_left, ide->dma_last_buffer));
}
/* read the next byte */
*data++ = cpunum_read_byte(ide->dma_cpu, ide->dma_address++);
ide->dma_bytes_left--;
}
}
void galpani2_mcu_run(void)
{
int i,x;
/* Write "KANEKO" to 100000-100005, but do not clash with ram test */
x = 0;
for (i = 0x100000; i < 0x100007; i++)
x |= cpunum_read_byte(0,i);
if ( x == 0 )
{
galpani2_write_kaneko();
cpunum_write_byte(1,0x100006,1);
logerror("MCU executes CHECK0\n");
}
}