Steem emulation: Trigger debugger when $ffc123 is written.

tattlemuss · Feb 16, 2021 · b0e77a8 · b0e77a8
1 parent 43bb7f8
commit b0e77a8
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Showing 6 changed files with 19 additions and 1 deletion.
diff --git a/src/debug/debugui.c b/src/debug/debugui.c
@@ -1374,3 +1374,8 @@ void DebugUI_Exceptions(int nr, long pc)
 	fprintf(stderr,"%s exception at 0x%lx!\n", ex[nr].name, pc);
 	DebugUI(REASON_CPU_EXCEPTION);
 }
+
+void DebugUI_Trigger()
+{
+	DebugUI(REASON_USER);
+}
diff --git a/src/debug/debugui.h b/src/debug/debugui.h
@@ -35,5 +35,6 @@ extern void DebugUI_Exceptions(int nr, long pc);
 extern bool DebugUI_ParseLine(const char *input);
 extern bool DebugUI_AddParseFile(const char *input);
 extern void DebugUI_MemorySnapShot_Capture(const char *path, bool bSave);
+extern void DebugUI_Trigger(void);
 
 #endif /* HATARI_DEBUGUI_H */
diff --git a/src/ioMemTabFalcon.c b/src/ioMemTabFalcon.c
@@ -30,6 +30,7 @@ const char IoMemTabFalc_fileid[] = "Hatari ioMemTabFalcon.c";
 #include "configuration.h"
 #include "statusbar.h"
 #include "stMemory.h"
+#include "debugui.h"
 #if ENABLE_DSP_EMU
 #include "falcon/dsp.h"
 #endif
@@ -414,6 +415,9 @@ const INTERCEPT_ACCESS_FUNC IoMemTable_Falcon[] =
 
 	{ 0xffc020, SIZE_BYTE, IoMemTabFalc_Compatible_ReadByte, IoMemTabFalc_Compatible_WriteByte },
 	{ 0xffc021, SIZE_BYTE, IoMemTabFalc_Compatible_ReadByte, IoMemTabFalc_Compatible_WriteByte },
+
+	{ 0xffc123, SIZE_BYTE, IoMem_BusErrorOddReadAccess, DebugUI_Trigger },
+
 	{ 0xffd020, SIZE_BYTE, IoMemTabFalc_Compatible_ReadByte, IoMemTabFalc_Compatible_WriteByte },
 	{ 0xffd074, SIZE_WORD, IoMemTabFalc_Compatible_ReadWord, IoMemTabFalc_Compatible_WriteWord },
 	{ 0xffd420, SIZE_BYTE, IoMemTabFalc_Compatible_ReadByte, IoMemTabFalc_Compatible_WriteByte },

diff --git a/src/ioMemTabST.c b/src/ioMemTabST.c
@@ -34,7 +34,7 @@ const char IoMemTabST_fileid[] = "Hatari ioMemTabST.c";
 #include "video.h"
 #include "blitter.h"
 #include "stMemory.h"
-
+#include "debugui.h"
 
 /*-----------------------------------------------------------------------*/
 /*
@@ -114,6 +114,8 @@ const INTERCEPT_ACCESS_FUNC IoMemTable_ST[] =
 	{ 0xff8a3c, SIZE_BYTE, Blitter_Control_ReadByte, Blitter_Control_WriteByte },
 	{ 0xff8a3d, SIZE_BYTE, Blitter_Skew_ReadByte, Blitter_Skew_WriteByte },
 
+	{ 0xffc123, SIZE_BYTE, IoMem_BusErrorOddReadAccess, DebugUI_Trigger },
+
 	{ 0xfffa01, SIZE_BYTE, MFP_GPIP_ReadByte, MFP_GPIP_WriteByte },
 	{ 0xfffa03, SIZE_BYTE, MFP_ActiveEdge_ReadByte, MFP_ActiveEdge_WriteByte },
 	{ 0xfffa05, SIZE_BYTE, MFP_DataDirection_ReadByte, MFP_DataDirection_WriteByte },

diff --git a/src/ioMemTabSTE.c b/src/ioMemTabSTE.c
@@ -27,6 +27,7 @@ const char IoMemTabSTE_fileid[] = "Hatari ioMemTabSTE.c";
 #include "blitter.h"
 #include "statusbar.h"
 #include "stMemory.h"
+#include "debugui.h"
 
 
 /**
@@ -213,6 +214,8 @@ const INTERCEPT_ACCESS_FUNC IoMemTable_STE[] =
 	{ 0xff9220, SIZE_WORD, Joy_SteLightpenX_ReadWord, IoMem_WriteWithoutInterception },     /* Lightpen X position */
 	{ 0xff9222, SIZE_WORD, Joy_SteLightpenY_ReadWord, IoMem_WriteWithoutInterception },     /* Lightpen Y position */
 
+	{ 0xffc123, SIZE_BYTE, IoMem_BusErrorOddReadAccess, DebugUI_Trigger },
+
 	{ 0xfffa01, SIZE_BYTE, MFP_GPIP_ReadByte, MFP_GPIP_WriteByte },
 	{ 0xfffa03, SIZE_BYTE, MFP_ActiveEdge_ReadByte, MFP_ActiveEdge_WriteByte },
 	{ 0xfffa05, SIZE_BYTE, MFP_DataDirection_ReadByte, MFP_DataDirection_WriteByte },

diff --git a/src/ioMemTabTT.c b/src/ioMemTabTT.c
@@ -36,6 +36,7 @@ const char IoMemTabTT_fileid[] = "Hatari ioMemTabTT.c";
 #include "screen.h"
 #include "video.h"
 #include "stMemory.h"
+#include "debugui.h"
 
 
 /**
@@ -185,6 +186,8 @@ const INTERCEPT_ACCESS_FUNC IoMemTable_TT[] =
 	{ 0xff9000, SIZE_WORD, IoMem_VoidRead, IoMem_VoidWrite },                /* No bus error here */
 	{ 0xff9200, SIZE_WORD, IoMemTabTT_ReadDIPSwitches, IoMem_VoidWrite },    /* DIP switches */
 
+	{ 0xffc123, SIZE_BYTE, IoMem_BusErrorOddReadAccess, DebugUI_Trigger },
+
 	{ 0xfffa01, SIZE_BYTE, MFP_GPIP_ReadByte, MFP_GPIP_WriteByte },
 	{ 0xfffa03, SIZE_BYTE, MFP_ActiveEdge_ReadByte, MFP_ActiveEdge_WriteByte },
 	{ 0xfffa05, SIZE_BYTE, MFP_DataDirection_ReadByte, MFP_DataDirection_WriteByte },