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CMI8x38: Implement Sound Blaster emulation

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This commit is contained in:
RichardG867
2022-03-06 19:59:14 -03:00
parent 9bbf31a2b4
commit 219129f97e
7 changed files with 502 additions and 141 deletions
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1
src/include/86box/dma.h
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@@ -66,6 +66,7 @@ typedef struct {
extern dma_t dma[8];
extern uint8_t dma_e;
extern uint8_t dma_m;
extern void dma_init(void);

17
src/include/86box/snd_sb_dsp.h
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@@ -20,6 +20,11 @@ typedef struct sb_dsp_t {
int sb_16_length, sb_16_format, sb_16_autoinit, sb_16_pause, sb_16_enable, sb_16_autolen, sb_16_output;
int sb_16_dmanum;
int sb_pausetime;
int (*dma_readb)(void *priv),
(*dma_readw)(void *priv),
(*dma_writeb)(void *priv, uint8_t val),
(*dma_writew)(void *priv, uint16_t val);
void *dma_priv;
uint8_t sb_read_data[256];
int sb_read_wp, sb_read_rp;
@@ -36,6 +41,8 @@ typedef struct sb_dsp_t {
int midi_in_timestamp;
int sb_irqnum;
void (*irq_update)(void *priv, int set),
*irq_priv;
uint8_t sbe2;
int sbe2count;
@@ -53,7 +60,7 @@ typedef struct sb_dsp_t {
int sbdacpos;
int sbleftright;
int sbleftright, sbleftright_default;
int sbreset;
uint8_t sbreaddat;
@@ -123,4 +130,12 @@ void sb_dsp_set_stereo(sb_dsp_t *dsp, int stereo);
void sb_dsp_update(sb_dsp_t *dsp);
void sb_update_mask(sb_dsp_t *dsp, int irqm8, int irqm16, int irqm401);
void sb_dsp_irq_attach(sb_dsp_t *dsp, void (*irq_update)(void *priv, int set), void *priv);
void sb_dsp_dma_attach(sb_dsp_t *dsp,
int (*dma_readb)(void *priv),
int (*dma_readw)(void *priv),
int (*dma_writeb)(void *priv, uint8_t val),
int (*dma_writew)(void *priv, uint16_t val),
void *priv);
#endif /* SOUND_SND_SB_DSP_H */