6502/cc65
1
0
Fork 0
mirror of https://github.com/cc65/cc65.git synced 2024-12-25 02:29:52 +00:00
Code Issues Projects Releases Wiki Activity

More preparations for loadable CPUs. Will still not compile.

Browse Source 
git-svn-id: svn://svn.cc65.org/cc65/trunk@5646 b7a2c559-68d2-44c3-8de9-860c34a00d81
This commit is contained in:
uz 2012-04-09 11:55:18 +00:00
parent 4858614605
commit b0ed819891
4 changed files with 986 additions and 923 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
src/sim65/chipif.h
View File

@ -2,14 +2,14 @@
/* */
/* chipif.h */
/* */
/* Interface header file for plugins - unused by sim65 */
/* Interface header file for chip plugins - unused by sim65 */
/* */
/* */
/* */
/* (C) 2002-2003 Ullrich von Bassewitz */
/* Römerstrasse 52 */
/* D-70794 Filderstadt */
/* EMail: uz@cc65.org */
/* (C) 2002-2012, Ullrich von Bassewitz */
/* Roemerstrasse 52 */
/* D-70794 Filderstadt */
/* EMail: uz@cc65.org */
/* */
/* */
/* This software is provided 'as-is', without any expressed or implied */

27
src/sim65/cpudata.h
View File

@ -44,19 +44,23 @@
/* Version defines */
#define CPUDATA_VER_MAJOR 1U
#define CPUDATA_VER_MINOR 0U
/* Forwards */
struct SimData;
/* CPUData structure */
typedef struct CPUData CPUData;
struct CPUData {
const char* CPUName; /* Name of the chip */
unsigned MajorVersion; /* Version information */
unsigned MinorVersion;
const char* CPUName; /* Name of the chip */
unsigned MajorVersion; /* Version information */
unsigned MinorVersion;
/* -- Exported functions -- */
void Init (const struct SimData* Data);
void (*Init) (const struct SimData* Data);
/* Initialize the CPU module */
void* (*CreateInstance) (void* CfgInfo);
@ -65,17 +69,22 @@ struct CPUData {
void (*DestroyInstance) (void* Data);
/* Destroy an instance of the CPU */
void Reset (void* Data);
void (*Reset) (void* Data);
/* Generate a CPU RESET */
void IRQRequest (void* Data);
void (*IRQRequest) (void* Data);
/* Generate an IRQ */
void NMIRequest (void* Data);
void (*NMIRequest) (void* Data);
/* Generate an NMI */
void Run (void* Data);
/* Run one CPU instruction */
unsigned (*ExecuteInsn) (void* Data);
/* Execute one CPU instruction. Return the number of clock cycles for the
* executed instruction.
*/
unsigned long (*GetCycles) (void* Data);
/* Return the total number of clock cycles executed */
};

1791
src/sim65/cpus/6502.c
View File

File diff suppressed because it is too large Load Diff

81
src/sim65/cpus/6502regs.h
View File

@ -1,81 +0,0 @@
/*****************************************************************************/
/* */
/* cpuregs.h */
/* */
/* CPU registers */
/* */
/* */
/* */
/* (C) 2003 Ullrich von Bassewitz */
/* Römerstrasse 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. */
/* */
/*****************************************************************************/
#ifndef CPUREGS_H
#define CPUREGS_H
/*****************************************************************************/
/* Data */
/*****************************************************************************/
typedef struct CPURegs CPURegs;
struct CPURegs {
unsigned AC; /* Accumulator */
unsigned XR; /* X register */
unsigned YR; /* Y register */
unsigned ZR; /* Z register */
unsigned SR; /* Status register */
unsigned SP; /* Stackpointer */
unsigned PC; /* Program counter */
};
/* Status register bits */
#define CF 0x01 /* Carry flag */
#define ZF 0x02 /* Zero flag */
#define IF 0x04 /* Interrupt flag */
#define DF 0x08 /* Decimal flag */
#define BF 0x10 /* Break flag */
#define OF 0x40 /* Overflow flag */
#define SF 0x80 /* Sign flag */
/*****************************************************************************/
/* Code */
/*****************************************************************************/
/* End of cpuregs.h */
#endif