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scsp: improve dma and ctrl definitions

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This commit is contained in:
Zack Buhman 2023-05-19 22:12:14 +00:00
parent 89487ec023
commit e40fade736
1 changed files with 21 additions and 3 deletions
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24
scsp.h
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@ -62,9 +62,9 @@ typedef struct scsp_ctrl {
reg16 STATUS; // slot status
reg16 _res[(8 / 2)];
struct {
reg16 DMEA;
reg16 DMAU;
reg16 DMAL;
reg16 DMAH;
reg16 DMAX;
};
struct {
reg16 TIMA;
@ -136,6 +136,9 @@ typedef struct scsp_reg {
} scsp_reg;
static_assert((sizeof (struct scsp_reg)) == 0x000ee4);
static_assert((offsetof (struct scsp_reg, slot[1])) == 0x20);
static_assert((offsetof (struct scsp_reg, slot[2])) == 0x40);
static_assert((offsetof (struct scsp_reg, slot[31])) == 0x3e0);
static_assert((offsetof (struct scsp_reg, ctrl)) == 0x000400);
static_assert((offsetof (struct scsp_reg, direct)) == 0x000600);
static_assert((offsetof (struct scsp_reg, dsp)) == 0x000700);
@ -244,12 +247,27 @@ enum mixer_bits {
#define PITCH__FNS(n) (((n) & 0x3ff) << 0 )
//};
enum scsp_bits {
enum master_bits {
MIXER__MEM4MB = (1 << 9),
MIXER__DAC18B = (1 << 8),
#define MIXER__MVOL(n) ((n) << 0)
};
//enum status_bits {
#define STATUS__MSLC(n) (((n) & 31) << 11)
#define STATUS__CA(reg) (((reg) >> 7) & 15)
//};
enum dma_bits {
#define DMAL__DMEA_L(n) ((n) & 0xfffe)
#define DMAH__DMEA_H(reg) ((((reg) >> 16) & 0b1111) << 12)
#define DMAH__DRGA(reg) ((reg) & 0x7fe)
DMAX__GA = (1 << 14),
DMAX__DI = (1 << 13),
DMAX__EX = (1 << 12),
#define DMAX__DTLG(reg) ((reg) & 0x7fe)
};
// timer bits
//enum tima_bits {