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32x: preliminary PWM implementation. 32x opts in menu

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git-svn-id: file:///home/notaz/opt/svn/PicoDrive@790 be3aeb3a-fb24-0410-a615-afba39da0efa
This commit is contained in:
notaz 2009-09-22 19:38:49 +00:00
parent 5e128c6d27
commit db1d3564e6
16 changed files with 256 additions and 46 deletions
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16
pico/pico_int.h
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@ -1,7 +1,7 @@
// Pico Library - Internal Header File
// (c) Copyright 2004 Dave, All rights reserved.
// (c) Copyright 2006-2008 Grazvydas "notaz" Ignotas, all rights reserved.
// (c) Copyright 2006-2009 Grazvydas "notaz" Ignotas, all rights reserved.
// Free for non-commercial use.
// For commercial use, separate licencing terms must be obtained.
@ -418,6 +418,9 @@ typedef struct
#define P32XV_nFEN (1<< 1)
#define P32XV_FS (1<< 0)
#define P32XP_FULL (1<<15) // PWM
#define P32XP_EMPTY (1<<14)
#define P32XF_68KPOLL (1 << 0)
#define P32XF_MSH2POLL (1 << 1)
#define P32XF_SSH2POLL (1 << 2)
@ -433,6 +436,7 @@ typedef struct
// real one is 4*2, but we use more because we don't lockstep
#define DMAC_FIFO_LEN (4*4)
#define PWM_BUFF_LEN 1024 // in one channel samples
struct Pico32x
{
@ -447,6 +451,7 @@ struct Pico32x
unsigned int sh2irqs; // common irqs
unsigned short dmac_fifo[DMAC_FIFO_LEN];
unsigned int dmac_ptr;
unsigned int pwm_irq_sample_cnt;
};
struct Pico32xMem
@ -460,6 +465,7 @@ struct Pico32xMem
unsigned short pal[0x100];
unsigned short pal_native[0x100]; // converted to native (for renderer)
unsigned int sh2_peri_regs[2][0x200/4]; // periphereal regs of SH2s
signed short pwm[2*PWM_BUFF_LEN]; // PWM buffer for current frame
};
// area.c
@ -671,6 +677,14 @@ void p32x_poll_event(int is_vdp);
// 32x/draw.c
void FinalizeLine32xRGB555(int sh, int line);
// 32x/pwm.c
unsigned int p32x_pwm_read16(unsigned int a);
void p32x_pwm_write16(unsigned int a, unsigned int d);
void p32x_pwm_refresh(void);
void p32x_pwm_irq_check(void);
void p32x_pwm_update(int *buf32, int length, int stereo);
extern int pwm_frame_smp_cnt;
/* avoid dependency on newer glibc */
static __inline int isspace_(int c)
{