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games/snes: save more audio state

--- a/sys/src/games/snes/dsp.c

+++ b/sys/src/games/snes/dsp.c

@@ -535,6 +535,50 @@

 	dsp[FLG] = 0xe0;

 }

+void

+dspsave(void)

+{

+	vctxt *p;

+

+	for(p = vctxts; p < vctxts + nelem(vctxts); p++){

+		put16(p->hdrp);

+		put16(p->dp);

+		put16(p->sp);

+		put8(p->hdr);

+		put8(p->bp);

+		put16(p->brr);

+		put8(p->envst);

+		put16(p->env);

+		put16(p->envbent);

+		put8(p->init);

+		put16(p->interp);

+		put16(p->pitch);

+		put16(p->modin);

+	}

+}

+

+void

+dspload(void)

+{

+	vctxt *p;

+

+	for(p = vctxts; p < vctxts + nelem(vctxts); p++){

+		p->hdrp = get16();

+		p->dp = get16();

+		p->sp = get16();

+		p->hdr = get8();

+		p->bp = get8();

+		p->brr = get16();

+		p->envst = get8();

+		p->env = get16();

+		p->envbent = get16();

+		p->init = get8();

+		p->interp = get16();

+		p->pitch = get16();

+		p->modin = get16();

+	}

+}

+

 u16int gauss[512] = {

 	0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000,

 	0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000,

--- a/sys/src/games/snes/fns.h

+++ b/sys/src/games/snes/fns.h

@@ -20,3 +20,11 @@

 void	flushram(void);

 void	loadstate(char *);

 void	savestate(char *);

+void	dspsave(void);

+void	dspload(void);

+int	get8(void);

+int	get16(void);

+int	get32(void);

+void	put8(u8int);

+void	put16(u16int);

+void	put32(u32int);

--- a/sys/src/games/snes/state.c

+++ b/sys/src/games/snes/state.c

@@ -128,6 +128,8 @@

 	dspstate = get8();

 	dspcounter = get16();

 	noise = get16();

+	Bread(bp, spctimer, sizeof(spctimer));

+	dspload();

 	Bterm(bp);

 }

@@ -186,5 +188,7 @@

 	put8(dspstate);

 	put16(dspcounter);

 	put16(noise);

+	Bwrite(bp, spctimer, sizeof(spctimer));

+	dspsave();

 	Bterm(bp);

 }

-- 

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