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Minor I/O write improvements

This commit is contained in:
David Guillen Fandos 2023-04-19 23:22:18 +02:00
parent 6eb1071dec
commit 6bf53cf3db
4 changed files with 30 additions and 26 deletions
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1
common.h
View File

@ -145,6 +145,7 @@ typedef u32 fixed8_24;
#define read_ioreg(regnum) (eswap16(io_registers[(regnum)]))
#define write_ioreg(regnum, val) io_registers[(regnum)] = eswap16(val)
#define read_ioreg32(regnum) (read_ioreg(regnum) | (read_ioreg((regnum)+1) << 16))
#define read_dmareg(regnum, dmachan) (eswap16(io_registers[(regnum) + (dmachan) * 6]))
#define write_dmareg(regnum, dmachan, val) io_registers[(regnum) + (dmachan) * 6] = eswap16(val)

17
gba_memory.c
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@ -56,11 +56,12 @@
} \
\
gbc_sound_update = 1; \
write_ioreg(regn, value); \
write_ioreg(regn, value & 0x47FF); \
} \
#define gbc_sound_tone_control_sweep() \
{ \
value &= 0x007F; \
u32 sweep_ticks = ((value >> 4) & 0x07) * 2; \
gbc_sound_channel[0].sweep_shift = value & 0x07; \
gbc_sound_channel[0].sweep_direction = (value >> 3) & 0x01; \
@ -80,7 +81,7 @@
gbc_sound_channel[2].master_enable = 1; \
\
gbc_sound_update = 1; \
write_ioreg(REG_SOUND3CNT_L, value); \
write_ioreg(REG_SOUND3CNT_L, value & 0x00E0); \
} \
static const u32 gbc_sound_wave_volume[4] = { 0, 16384, 8192, 4096 };
@ -141,7 +142,7 @@ static const u32 gbc_sound_wave_volume[4] = { 0, 16384, 8192, 4096 };
gbc_sound_channel[3].envelope_initial_volume; \
} \
gbc_sound_update = 1; \
write_ioreg(REG_SOUND4CNT_H, value); \
write_ioreg(REG_SOUND4CNT_H, value & 0x40FF); \
} \
static void gbc_trigger_sound(u32 value)
@ -156,7 +157,7 @@ static void gbc_trigger_sound(u32 value)
gbc_sound_channel[channel].status =
(((value >> (channel + 8)) & 0x1) | ((value >> (channel + 11)) & 0x3));
}
write_ioreg(REG_SOUNDCNT_L, value);
write_ioreg(REG_SOUNDCNT_L, value & 0xFF77);
}
#define trigger_sound() \
@ -175,7 +176,7 @@ static void gbc_trigger_sound(u32 value)
sound_reset_fifo(0); \
if((value >> 15) & 0x01) \
sound_reset_fifo(1); \
write_ioreg(REG_SOUNDCNT_H, value); \
write_ioreg(REG_SOUNDCNT_H, value & 0x770F); \
} \
static void sound_control_x(u32 value)
@ -875,12 +876,6 @@ cpu_alert_type function_cc write_io_register8(u32 address, u32 value)
// Sound 1 control sweep
case 0x60:
access_register8_low(0x60);
gbc_sound_tone_control_sweep();
break;
case 0x61:
access_register8_low(0x60);
gbc_sound_tone_control_sweep();
break;

26
gba_memory.h
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@ -69,13 +69,13 @@ typedef struct
typedef enum
{
REG_DISPCNT = 0x000,
REG_DISPSTAT = 0x002,
REG_VCOUNT = 0x003,
REG_BG0CNT = 0x004,
REG_BG1CNT = 0x005,
REG_BG2CNT = 0x006,
REG_BG3CNT = 0x007,
REG_DISPCNT = 0x00,
REG_DISPSTAT = 0x02,
REG_VCOUNT = 0x03,
REG_BG0CNT = 0x04,
REG_BG1CNT = 0x05,
REG_BG2CNT = 0x06,
REG_BG3CNT = 0x07,
REG_BG0HOFS = 0x08,
REG_BG0VOFS = 0x09,
REG_BG1HOFS = 0x0A,
@ -123,6 +123,18 @@ typedef enum
REG_SOUNDCNT_L = 0x40,
REG_SOUNDCNT_H = 0x41,
REG_SOUNDCNT_X = 0x42,
REG_SOUNDWAVE_0 = 0x48,
REG_SOUNDWAVE_1 = 0x49,
REG_SOUNDWAVE_2 = 0x4A,
REG_SOUNDWAVE_3 = 0x4B,
REG_SOUNDWAVE_4 = 0x4C,
REG_SOUNDWAVE_5 = 0x4D,
REG_SOUNDWAVE_6 = 0x4E,
REG_SOUNDWAVE_7 = 0x4F,
REG_SOUND_FIFOA_L = 0x50,
REG_SOUND_FIFOA_H = 0x51,
REG_SOUND_FIFOB_L = 0x52,
REG_SOUND_FIFOB_H = 0x53,
// DMA control
REG_DMA0SAD = 0x58,
REG_DMA0DAD = 0x5A,

12
video.c
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@ -2345,14 +2345,10 @@ static inline s32 signext28(u32 value)
void video_reload_counters()
{
/* This happens every Vblank */
affine_reference_x[0] = signext28(read_ioreg(REG_BG2X_L) |
(read_ioreg(REG_BG2X_H) << 16));
affine_reference_y[0] = signext28(read_ioreg(REG_BG2Y_L) |
(read_ioreg(REG_BG2Y_H) << 16));
affine_reference_x[1] = signext28(read_ioreg(REG_BG3X_L) |
(read_ioreg(REG_BG3X_H) << 16));
affine_reference_y[1] = signext28(read_ioreg(REG_BG3Y_L) |
(read_ioreg(REG_BG3Y_H) << 16));
affine_reference_x[0] = signext28(read_ioreg32(REG_BG2X_L));
affine_reference_y[0] = signext28(read_ioreg32(REG_BG2Y_L));
affine_reference_x[1] = signext28(read_ioreg32(REG_BG3X_L));
affine_reference_y[1] = signext28(read_ioreg32(REG_BG3Y_L));
}
#define affine_render_bg_pixel_normal() \