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fix ym2612 asm, rework EG

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this should be split, but I'm lazy
EG saves ~900 bytes
This commit is contained in:
notaz 2017-09-30 00:19:55 +03:00
parent e0bcb7a90d
commit 6d28fb5023
3 changed files with 117 additions and 157 deletions
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14
pico/sound/ym2612.h
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@ -43,10 +43,16 @@ typedef struct
INT16 volume; /* #0x1a envelope counter | need_save */
UINT32 sl; /* #0x1c sustain level:sl_table[SL] */
UINT32 eg_pack_ar; /* #0x20 (attack state) */
UINT32 eg_pack_d1r; /* #0x24 (decay state) */
UINT32 eg_pack_d2r; /* #0x28 (sustain state) */
UINT32 eg_pack_rr; /* #0x2c (release state) */
/* asm relies on this order: */
union {
struct {
UINT32 eg_pack_rr; /* #0x20 1 (release state) */
UINT32 eg_pack_d2r; /* #0x24 2 (sustain state) */
UINT32 eg_pack_d1r; /* #0x28 3 (decay state) */
UINT32 eg_pack_ar; /* #0x2c 4 (attack state) */
};
UINT32 eg_pack[4];
};
} FM_SLOT;