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-rw-r--r--src/devices/sound/scspdsp.h42
1 files changed, 42 insertions, 0 deletions
diff --git a/src/devices/sound/scspdsp.h b/src/devices/sound/scspdsp.h
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+++ b/src/devices/sound/scspdsp.h
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+// license:BSD-3-Clause
+// copyright-holders:ElSemi, R. Belmont
+#pragma once
+
+#ifndef __SCSPDSP_H__
+#define __SCSPDSP_H__
+
+//the DSP Context
+struct SCSPDSP
+{
+//Config
+ UINT16 *SCSPRAM;
+ UINT32 SCSPRAM_LENGTH;
+ UINT32 RBP; //Ring buf pointer
+ UINT32 RBL; //Delay ram (Ring buffer) size in words
+
+//context
+
+ INT16 COEF[64]; //16 bit signed
+ UINT16 MADRS[32]; //offsets (in words), 16 bit
+ UINT16 MPRO[128*4]; //128 steps 64 bit
+ INT32 TEMP[128]; //TEMP regs,24 bit signed
+ INT32 MEMS[32]; //MEMS regs,24 bit signed
+ UINT32 DEC;
+
+//input
+ INT32 MIXS[16]; //MIXS, 24 bit signed
+ INT16 EXTS[2]; //External inputs (CDDA) 16 bit signed
+
+//output
+ INT16 EFREG[16]; //EFREG, 16 bit signed
+
+ int Stopped;
+ int LastStep;
+};
+
+void SCSPDSP_Init(SCSPDSP *DSP);
+void SCSPDSP_SetSample(SCSPDSP *DSP, INT32 sample, INT32 SEL, INT32 MXL);
+void SCSPDSP_Step(SCSPDSP *DSP);
+void SCSPDSP_Start(SCSPDSP *DSP);
+
+#endif /* __SCSPDSP_H__ */