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- /*****
- * SPC7110 emulator - version 0.03 (2008-08-10)
- * Copyright (c) 2008, byuu and neviksti
- *
- * Permission to use, copy, modify, and/or distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies.
- *
- * The software is provided "as is" and the author disclaims all warranties
- * with regard to this software including all implied warranties of
- * merchantibility and fitness, in no event shall the author be liable for
- * any special, direct, indirect, or consequential damages or any damages
- * whatsoever resulting from loss of use, data or profits, whether in an
- * action of contract, negligence or other tortious action, arising out of
- * or in connection with the use or performance of this software.
- *****/
- #include "decomp.hpp"
- class SPC7110 : public MMIO, public Memory {
- public:
- void init();
- void enable();
- void power();
- void reset();
- unsigned datarom_addr(unsigned addr);
- unsigned data_pointer();
- unsigned data_adjust();
- unsigned data_increment();
- void set_data_pointer(unsigned addr);
- void set_data_adjust(unsigned addr);
- void update_time(int offset = 0);
- time_t create_time();
- uint8 mmio_read (unsigned addr);
- void mmio_write(unsigned addr, uint8 data);
- uint8 read (unsigned addr);
- void write(unsigned addr, uint8 data);
- //spc7110decomp
- void decomp_init();
- uint8 decomp_read();
- SPC7110();
- private:
- //==================
- //decompression unit
- //==================
- uint8 r4801; //compression table low
- uint8 r4802; //compression table high
- uint8 r4803; //compression table bank
- uint8 r4804; //compression table index
- uint8 r4805; //decompression buffer index low
- uint8 r4806; //decompression buffer index high
- uint8 r4807; //???
- uint8 r4808; //???
- uint8 r4809; //compression length low
- uint8 r480a; //compression length high
- uint8 r480b; //decompression control register
- uint8 r480c; //decompression status
- SPC7110Decomp decomp;
- //==============
- //data port unit
- //==============
- uint8 r4811; //data pointer low
- uint8 r4812; //data pointer high
- uint8 r4813; //data pointer bank
- uint8 r4814; //data adjust low
- uint8 r4815; //data adjust high
- uint8 r4816; //data increment low
- uint8 r4817; //data increment high
- uint8 r4818; //data port control register
- uint8 r481x;
- bool r4814_latch;
- bool r4815_latch;
- //=========
- //math 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 control register
- uint8 r482f; //math status
- //===================
- //memory mapping unit
- //===================
- uint8 r4830; //SRAM write enable
- uint8 r4831; //$[d0-df]:[0000-ffff] mapping
- uint8 r4832; //$[e0-ef]:[0000-ffff] mapping
- uint8 r4833; //$[f0-ff]:[0000-ffff] mapping
- uint8 r4834; //???
- unsigned dx_offset;
- unsigned ex_offset;
- unsigned fx_offset;
- //====================
- //real-time clock unit
- //====================
- uint8 r4840; //RTC latch
- uint8 r4841; //RTC index/data port
- uint8 r4842; //RTC status
- enum RTC_State { RTCS_Inactive, RTCS_ModeSelect, RTCS_IndexSelect, RTCS_Write } rtc_state;
- enum RTC_Mode { RTCM_Linear = 0x03, RTCM_Indexed = 0x0c } rtc_mode;
- unsigned rtc_index;
- static const unsigned months[12];
- };
- extern SPC7110 spc7110;
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