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git-svn-id: svn://svn.cc65.org/cc65/trunk@2109 b7a2c559-68d2-44c3-8de9-860c34a00d81
This commit is contained in:
cuz
2003-05-01 18:58:35 +00:00
parent aaf1db13dd
commit 2a5fbd00ef
13 changed files with 401 additions and 44 deletions
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5
src/sim65/chips/make/gcc.mak
View File

@@ -14,6 +14,7 @@ LDFLAGS =
LIBS = $(COMMON)/common.a
CHIPS = ram.so \
rom.so \
stdio.so
OBJS = $(CHIPS:.so=.o)
@@ -34,6 +35,10 @@ ram.so: ram.o
$(CC) $(CFLAGS) -shared -o $@ $(LIBS) $^
@if [ $(OS2_SHELL) ] ; then $(EBIND) $@ ; fi
rom.so: rom.o
$(CC) $(CFLAGS) -shared -o $@ $(LIBS) $^
@if [ $(OS2_SHELL) ] ; then $(EBIND) $@ ; fi
stdio.so: stdio.o
$(CC) $(CFLAGS) -shared -o $@ $(LIBS) $^
@if [ $(OS2_SHELL) ] ; then $(EBIND) $@ ; fi

17
src/sim65/chips/ram.c
View File

@@ -6,10 +6,10 @@
/* */
/* */
/* */
/* (C) 2002 Ullrich von Bassewitz */
/* Wacholderweg 14 */
/* D-70597 Stuttgart */
/* EMail: uz@musoftware.de */
/* (C) 2002-2003 Ullrich von Bassewitz */
/* R<EFBFBD>merstrasse 52 */
/* D-70794 Filderstadt */
/* EMail: uz@cc65.org */
/* */
/* */
/* This software is provided 'as-is', without any expressed or implied */
@@ -47,7 +47,7 @@
int InitChip (const struct SimData* Data);
static int InitChip (const struct SimData* Data);
/* Initialize the chip, return an error code */
static void* InitInstance (unsigned Addr, unsigned Range, void* CfgInfo);
@@ -77,6 +77,7 @@ static unsigned char Read (void* Data, unsigned Offs);
static const struct ChipData RAMData[1] = {
{
"RAM", /* Name of the chip */
CHIPDATA_TYPE_CHIP, /* Type of the chip */
CHIPDATA_VER_MAJOR, /* Version information */
CHIPDATA_VER_MINOR,
@@ -132,7 +133,7 @@ int GetChipData (const ChipData** Data, unsigned* Count)
int InitChip (const struct SimData* Data)
static int InitChip (const struct SimData* Data)
/* Initialize the chip, return an error code */
{
/* Remember the pointer */
@@ -187,7 +188,7 @@ static void Write (void* Data, unsigned Offs, unsigned char Val)
/* Check for a write to a write protected cell */
if (D->MemAttr[Offs] & ATTR_WPROT) {
Sim->Warning ("Writing to write protected memory at $%04X", D->BaseAddr+Offs);
Sim->Break ("Writing to write protected memory at $%04X", D->BaseAddr+Offs);
}
/* Do the write and remember the cell as initialized */
@@ -218,7 +219,7 @@ static unsigned char Read (void* Data, unsigned Offs)
/* Check for a read from an uninitialized cell */
if ((D->MemAttr[Offs] & ATTR_INITIALIZED) == 0) {
/* We're reading a memory cell that was never written to */
Sim->Warning ("Reading from uninitialized memory at $%04X", D->BaseAddr+Offs);
Sim->Break ("Reading from uninitialized memory at $%04X", D->BaseAddr+Offs);
}
/* Read the cell and return the value */

236
src/sim65/chips/rom.c Normal file
View File

@@ -0,0 +1,236 @@
/*****************************************************************************/
/* */
/* rom.c */
/* */
/* ROM plugin for the sim65 6502 simulator */
/* */
/* */
/* */
/* (C) 2003 Ullrich von Bassewitz */
/* R<>merstrasse 52 */
/* D-70794 Filderstadt */
/* EMail: uz@cc65.org */
/* */
/* */
/* This software is provided 'as-is', without any expressed or implied */
/* warranty. In no event will the authors be held liable for any damages */
/* arising from the use of this software. */
/* */
/* Permission is granted to anyone to use this software for any purpose, */
/* including commercial applications, and to alter it and redistribute it */
/* freely, subject to the following restrictions: */
/* */
/* 1. The origin of this software must not be misrepresented; you must not */
/* claim that you wrote the original software. If you use this software */
/* in a product, an acknowledgment in the product documentation would be */
/* appreciated but is not required. */
/* 2. Altered source versions must be plainly marked as such, and must not */
/* be misrepresented as being the original software. */
/* 3. This notice may not be removed or altered from any source */
/* distribution. */
/* */
/*****************************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
/* sim65 */
#include "chipif.h"
/*****************************************************************************/
/* Forwards */
/*****************************************************************************/
static int InitChip (const struct SimData* Data);
/* Initialize the chip, return an error code */
static void* InitInstance (unsigned Addr, unsigned Range, void* CfgInfo);
/* Initialize a new chip instance */
static void WriteCtrl (void* Data, unsigned Offs, unsigned char Val);
/* Write control data */
static void Write (void* Data, unsigned Offs, unsigned char Val);
/* Write user data */
static unsigned char ReadCtrl (void* Data, unsigned Offs);
/* Read control data */
static unsigned char Read (void* Data, unsigned Offs);
/* Read user data */
/*****************************************************************************/
/* Data */
/*****************************************************************************/
/* Control data passed to the main program */
static const struct ChipData ROMData[1] = {
{
"ROM", /* Name of the chip */
CHIPDATA_TYPE_CHIP, /* Type of the chip */
CHIPDATA_VER_MAJOR, /* Version information */
CHIPDATA_VER_MINOR,
/* -- Exported functions -- */
InitChip,
InitInstance,
WriteCtrl,
Write,
ReadCtrl,
Read
}
};
/* The SimData pointer we get when InitChip is called */
static const SimData* Sim;
/* Data for one ROM instance */
typedef struct InstanceData InstanceData;
struct InstanceData {
unsigned BaseAddr; /* Base address */
unsigned Range; /* Memory range */
unsigned char* Mem; /* The memory itself */
};
/*****************************************************************************/
/* Exported function */
/*****************************************************************************/
int GetChipData (const ChipData** Data, unsigned* Count)
{
/* Pass the control structure to the caller */
*Data = ROMData;
*Count = sizeof (Data) / sizeof (Data[0]);
/* Call was successful */
return 0;
}
/*****************************************************************************/
/* Code */
/*****************************************************************************/
static int InitChip (const struct SimData* Data)
/* Initialize the chip, return an error code */
{
/* Remember the pointer */
Sim = Data;
/* Always successful */
return 0;
}
static void* InitInstance (unsigned Addr, unsigned Range, void* CfgInfo)
/* Initialize a new chip instance */
{
char* Name;
FILE* F;
/* Allocate a new instance structure */
InstanceData* D = Sim->Malloc (sizeof (InstanceData));
/* Initialize the structure, allocate RAM and attribute memory */
D->BaseAddr = Addr;
D->Range = Range;
D->Mem = Sim->Malloc (Range);
/* We must have a "file" attribute. Get it. */
if (Sim->GetCfgStr (CfgInfo, "file", &Name) == 0) {
/* Attribute not found */
Sim->Error ("Attribute `file' missing"); /* ### */
}
/* Open the file with the given name */
F = fopen (Name, "rb");
if (F == 0) {
Sim->Error ("Cannot open `%s': %s", Name, strerror (errno));
}
/* Read the file into the memory */
if (fread (D->Mem, 1, D->Range, F) != D->Range) {
Sim->Warning ("Cannot read %u bytes from file `%s'", D->Range, Name);
}
/* Close the file */
fclose (F);
/* Free the file name */
Sim->Free (Name);
/* Done, return the instance data */
return D;
}
static void WriteCtrl (void* Data, unsigned Offs, unsigned char Val)
/* Write control data */
{
/* Cast the data pointer */
InstanceData* D = (InstanceData*) Data;
/* Do the write */
D->Mem[Offs] = Val;
}
static void Write (void* Data, unsigned Offs, unsigned char Val)
/* Write user data */
{
/* Cast the data pointer */
InstanceData* D = (InstanceData*) Data;
/* Print a warning */
Sim->Break ("Writing to write protected memory at $%04X (value = $%02X)",
D->BaseAddr+Offs, Val);
}
static unsigned char ReadCtrl (void* Data, unsigned Offs)
/* Read control data */
{
/* Cast the data pointer */
InstanceData* D = (InstanceData*) Data;
/* Read the cell and return the value */
return D->Mem[Offs];
}
static unsigned char Read (void* Data, unsigned Offs)
/* Read user data */
{
/* Cast the data pointer */
InstanceData* D = (InstanceData*) Data;
/* Read the cell and return the value */
return D->Mem[Offs];
}

17
src/sim65/chips/stdio.c
View File

@@ -6,10 +6,10 @@
/* */
/* */
/* */
/* (C) 2002 Ullrich von Bassewitz */
/* Wacholderweg 14 */
/* D-70597 Stuttgart */
/* EMail: uz@musoftware.de */
/* (C) 2002-2003 Ullrich von Bassewitz */
/* R<EFBFBD>merstrasse 52 */
/* D-70794 Filderstadt */
/* EMail: uz@cc65.org */
/* */
/* */
/* This software is provided 'as-is', without any expressed or implied */
@@ -51,7 +51,7 @@
int InitChip (const struct SimData* Data);
static int InitChip (const struct SimData* Data);
/* Initialize the chip, return an error code */
static void* InitInstance (unsigned Addr, unsigned Range, void* CfgInfo);
@@ -72,9 +72,10 @@ static unsigned char Read (void* Data, unsigned Offs);
/* Control data passed to the main program */
static const struct ChipData RAMData[1] = {
static const struct ChipData STDIOData[1] = {
{
"STDIO", /* Name of the chip */
CHIPDATA_TYPE_CHIP, /* Type of the chip */
CHIPDATA_VER_MAJOR, /* Version information */
CHIPDATA_VER_MINOR,
@@ -102,7 +103,7 @@ static const SimData* Sim;
int GetChipData (const ChipData** Data, unsigned* Count)
{
/* Pass the control structure to the caller */
*Data = RAMData;
*Data = STDIOData;
*Count = sizeof (Data) / sizeof (Data[0]);
/* Call was successful */
@@ -117,7 +118,7 @@ int GetChipData (const ChipData** Data, unsigned* Count)
int InitChip (const struct SimData* Data)
static int InitChip (const struct SimData* Data)
/* Initialize the chip, return an error code */
{
/* Remember the pointer */