mirror of https://github.com/bsnes-emu/bsnes.git
132 lines
3.3 KiB
C++
132 lines
3.3 KiB
C++
struct Decompressor;
|
|
|
|
struct SPC7110 : Coprocessor {
|
|
MappedRAM prom; //program ROM
|
|
MappedRAM drom; //data ROM
|
|
MappedRAM ram;
|
|
|
|
static void Enter();
|
|
void enter();
|
|
void init();
|
|
void load();
|
|
void unload();
|
|
void power();
|
|
void reset();
|
|
|
|
void add_clocks(unsigned clocks);
|
|
|
|
uint8 read(unsigned addr);
|
|
void write(unsigned addr, uint8 data);
|
|
|
|
uint8 mcurom_read(unsigned addr);
|
|
void mcurom_write(unsigned addr, uint8 data);
|
|
|
|
uint8 mcuram_read(unsigned addr);
|
|
void mcuram_write(unsigned addr, uint8 data);
|
|
|
|
void serialize(serializer&);
|
|
SPC7110();
|
|
~SPC7110();
|
|
|
|
//dcu.cpp
|
|
void dcu_load_address();
|
|
void dcu_begin_transfer();
|
|
uint8 dcu_read();
|
|
|
|
void deinterleave_1bpp(unsigned length);
|
|
void deinterleave_2bpp(unsigned length);
|
|
void deinterleave_4bpp(unsigned length);
|
|
|
|
//data.cpp
|
|
uint8 datarom_read(unsigned addr);
|
|
|
|
unsigned data_offset();
|
|
unsigned data_adjust();
|
|
unsigned data_stride();
|
|
|
|
void set_data_offset(unsigned addr);
|
|
void set_data_adjust(unsigned addr);
|
|
|
|
void data_port_read();
|
|
|
|
void data_port_increment_4810();
|
|
void data_port_increment_4814();
|
|
void data_port_increment_4815();
|
|
void data_port_increment_481a();
|
|
|
|
//alu.cpp
|
|
void alu_multiply();
|
|
void alu_divide();
|
|
|
|
private:
|
|
//==================
|
|
//decompression unit
|
|
//==================
|
|
uint8 r4801; //compression table B0
|
|
uint8 r4802; //compression table B1
|
|
uint7 r4803; //compression table B2
|
|
uint8 r4804; //compression table index
|
|
uint8 r4805; //adjust length B0
|
|
uint8 r4806; //adjust length B1
|
|
uint8 r4807; //stride length
|
|
uint8 r4809; //compression counter B0
|
|
uint8 r480a; //compression counter B1
|
|
uint8 r480b; //decompression settings
|
|
uint8 r480c; //decompression status
|
|
|
|
bool dcu_pending;
|
|
uint2 dcu_mode;
|
|
uint23 dcu_addr;
|
|
unsigned dcu_offset;
|
|
uint8 dcu_tile[32];
|
|
Decompressor* decompressor;
|
|
|
|
//==============
|
|
//data port unit
|
|
//==============
|
|
uint8 r4810; //data port read + seek
|
|
uint8 r4811; //data offset B0
|
|
uint8 r4812; //data offset B1
|
|
uint7 r4813; //data offset B2
|
|
uint8 r4814; //data adjust B0
|
|
uint8 r4815; //data adjust B1
|
|
uint8 r4816; //data stride B0
|
|
uint8 r4817; //data stride B1
|
|
uint8 r4818; //data port settings
|
|
uint8 r481a; //data port seek
|
|
|
|
//=====================
|
|
//arithmetic logic unit
|
|
//=====================
|
|
uint8 r4820; //16-bit multiplicand B0, 32-bit dividend B0
|
|
uint8 r4821; //16-bit multiplicand B1, 32-bit dividend B1
|
|
uint8 r4822; //32-bit dividend B2
|
|
uint8 r4823; //32-bit dividend B3
|
|
uint8 r4824; //16-bit multiplier B0
|
|
uint8 r4825; //16-bit multiplier B1
|
|
uint8 r4826; //16-bit divisor B0
|
|
uint8 r4827; //16-bit divisor B1
|
|
uint8 r4828; //32-bit product B0, 32-bit quotient B0
|
|
uint8 r4829; //32-bit product B1, 32-bit quotient B1
|
|
uint8 r482a; //32-bit product B2, 32-bit quotient B2
|
|
uint8 r482b; //32-bit product B3, 32-bit quotient B3
|
|
uint8 r482c; //16-bit remainder B0
|
|
uint8 r482d; //16-bit remainder B1
|
|
uint8 r482e; //math settings
|
|
uint8 r482f; //math status
|
|
|
|
bool mul_pending;
|
|
bool div_pending;
|
|
|
|
//===================
|
|
//memory control unit
|
|
//===================
|
|
uint8 r4830; //bank 0 mapping + SRAM write enable
|
|
uint8 r4831; //bank 1 mapping
|
|
uint8 r4832; //bank 2 mapping
|
|
uint8 r4833; //bank 3 mapping
|
|
uint8 r4834; //bank mapping settings
|
|
};
|
|
|
|
extern SPC7110 spc7110;
|