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32x: sh2 irqs (irls), preliminary DMAC implementation

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git-svn-id: file:///home/notaz/opt/svn/PicoDrive@786 be3aeb3a-fb24-0410-a615-afba39da0efa
This commit is contained in:
notaz 2009-09-20 18:13:06 +00:00
parent bca23c1c79
commit 4ea707e1e3
6 changed files with 335 additions and 83 deletions
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41
pico/pico_int.h
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@ -234,11 +234,11 @@ SH2 msh2, ssh2;
#define ash2_pc() msh2.ppc
#define ash2_end_run(after) sh2_icount = after
#define msh2_pc() msh2.ppc
#define ssh2_pc() ssh2.ppc
#define msh2_reg(x) msh2.r[x]
#define ssh2_reg(x) ssh2.r[x]
#define sh2_pc(c) (c) ? ssh2.ppc : msh2.ppc
#define sh2_reg(c, x) (c) ? ssh2.r[x] : msh2.r[x]
#define sh2_gbr(c) (c) ? ssh2.gbr : msh2.gbr
#define sh2_vbr(c) (c) ? ssh2.vbr : msh2.vbr
#define sh2_sr(c) (c) ? ssh2.sr : msh2.sr
// ---------------------------------------------------------
@ -405,10 +405,13 @@ typedef struct
// 32X
#define P32XS_FM (1<<15)
#define P32XS2_ADEN (1<< 9)
#define P32XS_FULL (1<< 7)
#define P32XS_68S (1<< 2)
#define P32XS_RV (1<< 0)
#define P32XV_nPAL (1<<15)
#define P32XV_PRI (1<< 7)
#define P32XV_Mx (3<< 0)
#define P32XV_Mx (3<< 0) // display mode mask
#define P32XV_VBLK (1<<15)
#define P32XV_HBLK (1<<14)
@ -416,9 +419,21 @@ typedef struct
#define P32XV_nFEN (1<< 1)
#define P32XV_FS (1<< 0)
#define P32XF_68KPOLL (1 << 0)
#define P32XF_MSH2POLL (1 << 1)
#define P32XF_SSH2POLL (1 << 2)
#define P32XF_68KPOLL (1 << 0)
#define P32XF_MSH2POLL (1 << 1)
#define P32XF_SSH2POLL (1 << 2)
#define P32XF_68KVPOLL (1 << 3)
#define P32XF_MSH2VPOLL (1 << 4)
#define P32XF_SSH2VPOLL (1 << 5)
#define P32XI_VRES (1 << 14/2) // IRL/2
#define P32XI_VINT (1 << 12/2)
#define P32XI_HINT (1 << 10/2)
#define P32XI_CMD (1 << 8/2)
#define P32XI_PWM (1 << 6/2)
// real one is 4*2, but we use more because we don't lockstep
#define DMAC_FIFO_LEN (4*4)
struct Pico32x
{
@ -428,6 +443,11 @@ struct Pico32x
unsigned char dirty_pal;
unsigned char pad[2];
unsigned int emu_flags;
unsigned char sh2irq_mask[2];
unsigned char sh2irqi[2]; // individual
unsigned int sh2irqs; // common irqs
unsigned short dmac_fifo[DMAC_FIFO_LEN];
unsigned int dmac_ptr;
};
struct Pico32xMem
@ -439,6 +459,7 @@ struct Pico32xMem
unsigned char sh2_rom_s[0x400];
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
};
// area.c
@ -634,6 +655,7 @@ void PicoReset32x(void);
void Pico32xStartup(void);
void PicoUnload32x(void);
void PicoFrame32x(void);
void p32x_update_irls(void);
// 32x/memory.c
struct Pico32xMem *Pico32xMem;
@ -643,6 +665,7 @@ void PicoWrite8_32x(unsigned int a, unsigned int d);
void PicoWrite16_32x(unsigned int a, unsigned int d);
void PicoMemSetup32x(void);
void Pico32xSwapDRAM(int b);
void p32x_poll_event(int is_vdp);
// 32x/draw.c
void FinalizeLine32xRGB555(int sh, int line);