From 79e6003711c396c508ef89e0664270b22f0db601 Mon Sep 17 00:00:00 2001
From: schneefux <schneefux+commit@schneefux.xyz>
Date: Sun, 12 Jun 2016 19:47:10 +0200
Subject: import into git

---
 README.md  |   3 ++
 fx-sound.c | 105 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 108 insertions(+)
 create mode 100644 README.md
 create mode 100644 fx-sound.c

diff --git a/README.md b/README.md
new file mode 100644
index 0000000..cc5905c
--- /dev/null
+++ b/README.md
@@ -0,0 +1,3 @@
+Play wav files on a Casio fx-9860 GII-2 - based on MPoupe's work
+
+Connect the calculator's 3-pin cable to speakers, place a "TEST.wav" in the flash memory and overclock the calculator to 87.5 MHz.
diff --git a/fx-sound.c b/fx-sound.c
new file mode 100644
index 0000000..5a54a5e
--- /dev/null
+++ b/fx-sound.c
@@ -0,0 +1,105 @@
+// original by MPoupe, modified by Casimo
+#include "fxlib.h"
+#include "7305.h"
+
+#define DATAPACK 8080
+
+unsigned char UserStack[DATAPACK];
+
+//Conversion tables
+#define X 0x10
+#define _ 0x00
+
+static const unsigned char LowTable[16]=
+{
+   _,_,_,_,//0
+   X,_,_,_,//1
+   X,_,X,_,//2
+   _,X,X,X,//3
+};
+
+                               //0    1    2    3    4    5    6    7
+static const unsigned char HighTable[8]={0x00,0x01,0x44,0x45,0x65,0x67,0xE7,0xEF};
+
+#define gpBuffer UserStack
+
+//static unsigned char *gpBuffer;
+static unsigned int giBufIndex = 0;
+static unsigned char giTableIndex = 0;
+static unsigned char giSubSample = 0;
+static unsigned char giFromHighTab = 0;
+
+static int ComOpen()
+{
+   //unsigned char settings[5]={0,9,0,1,0};//115200,2xstop bits
+   unsigned char settings[5]={0,9,0,0,0};//115200,1xstop bits
+   if(Serial_Open(&settings))
+   {
+      return 1;
+   }
+      //SCIF2.SCSMR.BIT.SRC = 1;//1/5 (for 9860)
+
+   //it has no SRC register (comparing to fx9860G), so actual speed is only ~ 460800
+   //SCIF2.SCSMR.BIT.SRC = 0;//1/16 (for 9860)
+   SCIF2.SCSMR.BIT.CKS = 0;//1/1
+      //SCIF2.SCBRR = 2;//!override speed to 1959390 bps (for 9860)
+   SCIF2.SCBRR = 0;//!override speed to 1836000 bps (for 9860)
+   return  0;
+}
+
+int AddIn_main(int isAppli, unsigned short OptionNum)
+{
+   FONTCHARACTER path[] ={'\\','\\','f','l','s','0','\\','T','E','S','T','.','w','a','v',0};
+   unsigned int i, size;
+   unsigned int code1, code2;
+   int hFile = Bfile_OpenFile(path, _OPENMODE_READ);
+   //skip wav header
+   if(Bfile_ReadFile(hFile,UserStack,44,-1) != 44)
+   {
+      return 0;
+   }
+
+   size = Bfile_GetFileSize(hFile);
+   ComOpen();
+   Bdisp_AllClr_VRAM();
+   locate( 1, 1 );
+   Print(&"Playing");
+   Bdisp_PutDisp_DD();
+
+   //read it
+   for(i = 0; i < size; i+= DATAPACK)
+   {
+      Bfile_ReadFile(hFile,UserStack ,DATAPACK,-1);
+      for(giBufIndex = 0; giBufIndex < DATAPACK;)
+      {
+         //it has only 16 B fifo :-(
+         while ((SCIF2.SCFDR.WORD >> 8) < 16)
+         {
+            if(giTableIndex >= 4)
+            {
+               giSubSample = gpBuffer[giBufIndex++] >> 3;
+               giFromHighTab = HighTable[giSubSample>>2];
+               giSubSample = (giSubSample & 3) << 2;
+               giTableIndex = 0;
+            }
+            SCIF2.SCFTDR = (unsigned char)LowTable[giSubSample|giTableIndex]|giFromHighTab;
+            giTableIndex++;
+         }
+      }
+      if(Bkey_GetKeyWait(&code1,&code2,KEYWAIT_HALTOFF_TIMEROFF,0,1,0) == KEYREP_KEYEVENT)
+      {
+         if(code1 == 4 && code2 == 8)
+         break;
+      }
+   }
+   Bfile_CloseFile(hFile);
+   Serial_Close(1);
+}
+
+#pragma section _BR_Size
+unsigned long BR_Size;
+#pragma section
+#pragma section _TOP
+int InitializeSystem(int isAppli, unsigned short OptionNum)
+{return INIT_ADDIN_APPLICATION(isAppli, OptionNum);}
+#pragma section
-- 
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