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add emulation for spi power management device system power-off and add power management device to savestates

This commit is contained in:
zeromus 2010-03-30 08:34:01 +00:00
parent 3198207ee3
commit 513b3b648f
2 changed files with 28 additions and 3 deletions
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27
desmume/src/MMU.cpp
View File

@ -3825,13 +3825,35 @@ void FASTCALL _MMU_ARM7_write16(u32 adr, u16 val)
}
else
{
u16 reg = MMU.powerMan_CntReg&0x7F;
reg &= 0x7;
if(reg==5 || reg==6 || reg==7) reg = 4;
//(let's start with emulating a DS lite, since it is the more complex case)
if(MMU.powerMan_CntReg & 0x80)
{
val = MMU.powerMan_Reg[MMU.powerMan_CntReg & 0x3];
//read
val = MMU.powerMan_Reg[reg];
}
else
{
MMU.powerMan_Reg[MMU.powerMan_CntReg & 0x3] = (u8)val;
//write
MMU.powerMan_Reg[reg] = (u8)val;
enum PM_Bits //from libnds
{
PM_SOUND_AMP = BIT(0) , /*!< \brief Power the sound hardware (needed to hear stuff in GBA mode too) */
PM_SOUND_MUTE = BIT(1), /*!< \brief Mute the main speakers, headphone output will still work. */
PM_BACKLIGHT_BOTTOM = BIT(2), /*!< \brief Enable the top backlight if set */
PM_BACKLIGHT_TOP = BIT(3) , /*!< \brief Enable the bottom backlight if set */
PM_SYSTEM_PWR = BIT(6) , /*!< \brief Turn the power *off* if set */
};
//our totally pathetic register handling, only the one thing we've wanted so far
if(MMU.powerMan_Reg[0]&PM_SYSTEM_PWR) {
printf("SYSTEM POWERED OFF VIA ARM7 SPI POWER DEVICE\n");
emu_halt();
}
}
MMU.powerMan_CntRegWritten = FALSE;
@ -4628,4 +4650,3 @@ struct armcpu_memory_iface arm9_direct_memory_iface = {
//print_memory_profiling( void) {
//}
//#endif /* End of PROFILE_MEMORY_ACCESS area */

4
desmume/src/saves.cpp
View File

@ -249,6 +249,10 @@ SFORMAT SF_MMU[]={
{ "FDTL", 4, 1, &disp_fifo.tail},
{ "FDBF", 4, 0x6000, disp_fifo.buf},
{ "PMCN", 1, 1, &MMU.powerMan_CntReg},
{ "PMCW", 4, 1, &MMU.powerMan_CntRegWritten},
{ "PMCR", 1, 4, &MMU.powerMan_Reg},
{ 0 }
};