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initial code for Nemesis' blip discovery

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git-svn-id: file:///home/notaz/opt/svn/PicoDrive@493 be3aeb3a-fb24-0410-a615-afba39da0efa
This commit is contained in:
notaz 2008-06-23 22:07:10 +00:00
parent a846766f40
commit eaa9417a9b
2 changed files with 36 additions and 46 deletions
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17
Pico/sound/ym2612.h
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@ -56,6 +56,7 @@ typedef struct
UINT8 ALGO; /* +00 algorithm */
UINT8 FB; /* feedback shift */
UINT8 pad[2];
INT32 op1_out; /* op1 output for feedback */
INT32 mem_value; /* +08 delayed sample (MEM) value */
@ -64,12 +65,14 @@ typedef struct
UINT8 ams; /* channel AMS */
UINT8 kcode; /* +11 key code: */
UINT8 fn_h; /* freq latch */
UINT8 pad2;
UINT32 fc; /* fnum,blk:adjusted to sample rate */
UINT32 block_fnum; /* current blk/fnum value for this slot (can be different betweeen slots of one channel in 3slot mode) */
/* LFO */
UINT8 AMmasks; /* AM enable flag */
UINT8 pad3[3];
} FM_CH;
typedef struct
@ -80,12 +83,12 @@ typedef struct
UINT8 address; /* 10 address register | need_save */
UINT8 status; /* 11 status flag | need_save */
UINT8 mode; /* mode CSM / 3SLOT */
UINT8 fn_h; /* freq latch */
UINT8 pad;
int TA; /* timer a */
int TAC; /* timer a maxval */
int TAT; /* timer a ticker | need_save */
UINT8 TB; /* timer b */
UINT8 pad[3];
UINT8 pad2[3];
int TBC; /* timer b maxval */
int TBT; /* timer b ticker | need_save */
/* local time tables */
@ -112,9 +115,9 @@ typedef struct
FM_3SLOT SL3; /* 3 slot mode state */
UINT32 pan; /* fm channels output mask (bit 1 = enable) */
UINT32 eg_cnt; /* #0xb38 global envelope generator counter | need_save */
UINT32 eg_timer; /* #0xb3c global envelope generator counter works at frequency = chipclock/64/3 | need_save */
UINT32 eg_timer_add; /* #0xb40 step of eg_timer */
UINT32 eg_cnt; /* global envelope generator counter | need_save */
UINT32 eg_timer; /* global envelope generator counter works at frequency = chipclock/64/3 | need_save */
UINT32 eg_timer_add; /* step of eg_timer */
/* LFO */
UINT32 lfo_cnt; /* need_save */
@ -129,7 +132,7 @@ typedef struct
UINT8 REGS[0x200]; /* registers (for save states) */
INT32 addr_A1; /* address line A1 | need_save */
FM_CH CH[6]; /* channel state (0x168 bytes each)? */
FM_CH CH[6]; /* channel state */
/* dac output (YM2612) */
int dacen;