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Diffstat (limited to 'plugins/gme/Game_Music_Emu-0.5.2/gme/Hes_Cpu.h')
-rw-r--r--plugins/gme/Game_Music_Emu-0.5.2/gme/Hes_Cpu.h125
1 files changed, 0 insertions, 125 deletions
diff --git a/plugins/gme/Game_Music_Emu-0.5.2/gme/Hes_Cpu.h b/plugins/gme/Game_Music_Emu-0.5.2/gme/Hes_Cpu.h
deleted file mode 100644
index 437d0908..00000000
--- a/plugins/gme/Game_Music_Emu-0.5.2/gme/Hes_Cpu.h
+++ /dev/null
@@ -1,125 +0,0 @@
-// PC Engine CPU emulator for use with HES music files
-
-// Game_Music_Emu 0.5.2
-#ifndef HES_CPU_H
-#define HES_CPU_H
-
-#include "blargg_common.h"
-#include <limits.h>
-
-typedef blargg_long hes_time_t; // clock cycle count
-typedef unsigned hes_addr_t; // 16-bit address
-enum { future_hes_time = LONG_MAX / 2 + 1 };
-
-class Hes_Cpu {
-public:
- typedef BOOST::uint8_t uint8_t;
-
- void reset();
-
- enum { page_size = 0x2000 };
- enum { page_shift = 13 };
- enum { page_count = 8 };
- void set_mmr( int reg, int bank );
-
- uint8_t const* get_code( hes_addr_t );
-
- uint8_t ram [page_size];
-
- // not kept updated during a call to run()
- struct registers_t {
- BOOST::uint16_t pc;
- uint8_t a;
- uint8_t x;
- uint8_t y;
- uint8_t status;
- uint8_t sp;
- };
- registers_t r;
-
- // page mapping registers
- uint8_t mmr [page_count + 1];
-
- // Set end_time and run CPU from current time. Returns true if any illegal
- // instructions were encountered.
- bool run( hes_time_t end_time );
-
- // Time of beginning of next instruction to be executed
- hes_time_t time() const { return state->time + state->base; }
- void set_time( hes_time_t t ) { state->time = t - state->base; }
- void adjust_time( int delta ) { state->time += delta; }
-
- hes_time_t irq_time() const { return irq_time_; }
- void set_irq_time( hes_time_t );
-
- hes_time_t end_time() const { return end_time_; }
- void set_end_time( hes_time_t );
-
- void end_frame( hes_time_t );
-
- // Attempt to execute instruction here results in CPU advancing time to
- // lesser of irq_time() and end_time() (or end_time() if IRQs are
- // disabled)
- enum { idle_addr = 0x1FFF };
-
- // Can read this many bytes past end of a page
- enum { cpu_padding = 8 };
-
-public:
- Hes_Cpu() { state = &state_; }
- enum { irq_inhibit = 0x04 };
-private:
- // noncopyable
- Hes_Cpu( const Hes_Cpu& );
- Hes_Cpu& operator = ( const Hes_Cpu& );
-
- struct state_t {
- uint8_t const* code_map [page_count + 1];
- hes_time_t base;
- blargg_long time;
- };
- state_t* state; // points to state_ or a local copy within run()
- state_t state_;
- hes_time_t irq_time_;
- hes_time_t end_time_;
-
- void set_code_page( int, void const* );
- inline int update_end_time( hes_time_t end, hes_time_t irq );
-};
-
-inline BOOST::uint8_t const* Hes_Cpu::get_code( hes_addr_t addr )
-{
- return state->code_map [addr >> page_shift] + addr
- #if !BLARGG_NONPORTABLE
- % (unsigned) page_size
- #endif
- ;
-}
-
-inline int Hes_Cpu::update_end_time( hes_time_t t, hes_time_t irq )
-{
- if ( irq < t && !(r.status & irq_inhibit) ) t = irq;
- int delta = state->base - t;
- state->base = t;
- return delta;
-}
-
-inline void Hes_Cpu::set_irq_time( hes_time_t t )
-{
- state->time += update_end_time( end_time_, (irq_time_ = t) );
-}
-
-inline void Hes_Cpu::set_end_time( hes_time_t t )
-{
- state->time += update_end_time( (end_time_ = t), irq_time_ );
-}
-
-inline void Hes_Cpu::end_frame( hes_time_t t )
-{
- assert( state == &state_ );
- state_.base -= t;
- if ( irq_time_ < future_hes_time ) irq_time_ -= t;
- if ( end_time_ < future_hes_time ) end_time_ -= t;
-}
-
-#endif