Print Page - Overclock in WIZ

Title: Overclock in WIZ
Post by: mentalthink on 2009-Dec-13

HI there.

Can be implement a command for make o.c to WIZ, how make the Mame emulator?Ã,Â¿.

Thanks.
Best Regards.
mentalthink

PS:If this is viable to implement in GLbasic, I think what this command will have a limit for O.C.

Title: Re: Overclock in WIZ
Post by: Kitty Hello on 2009-Dec-13

Code (glbasic) Select



INLINE
	#ifdef GP2X_WIZ
	extern "C"
	{
	typedef long off_t;
	typedef long mode_t;
	typedef long size_t;
	int open(const char *path, int flags, ...);
	void *mmap(void *addr, size_t LEN, int prot, int flags,     int fildes, off_t off);
	}
	#define MAP_SHARED 0x01
	#define O_RDWR 0x02
	#define PROT_READ 0x01
	#define PROT_WRITE 0x02
	#define SYS_CLK_FREQ 27

	#define PLLSETREG0		(memregs32[0xF004>>2])
	#define PWRMODE			(memregs32[0xF07C>>2])

	#endif

ENDINLINE

FUNCTION SetWizClock%: MHZ%
INLINE
#ifdef GP2X_WIZ
	volatile unsigned int *memregs32;

	int speed = 1000000 * MHZ;

	int memfd = open("/dev/mem", O_RDWR);

	memregs32 = (volatile unsigned int*) mmap(0, 0x20000, PROT_READ|PROT_WRITE, MAP_SHARED, memfd, 0xC0000000);

	unsigned  long v;
	unsigned mdiv, pdiv=9, sdiv=0;

	mdiv= (speed * pdiv) / SYS_CLK_FREQ;
	mdiv &= 0x3FF;
	v= pdiv<<18 | mdiv<<8 | sdiv;

	PLLSETREG0 = v;
	PWRMODE |= 0x8000;
	close(memfd);
	#endif
ENDINLINE


ENDFUNCTION

I have not tested it - or... I did, bit it didn't change much. Maybe it's wrong.

Title: Re: Overclock in WIZ
Post by: mentalthink on 2009-Dec-13

HI, Gernott, thanks for your quick answer.

GLBasic forum

Main forum => GLBasic - en => Topic started by: mentalthink on 2009-Dec-13