Exemple #1
0
/* mode 13h functions */
static void m13h_setmode( void )
{
	int i;
	uint8_t regs[] =
	{
		/* MISC */
		0x63,
		/* SEQ */
		0x03, 0x01, 0x0F, 0x00, 0x0E,
		/* CRTC */
		0x5F, 0x4F, 0x50, 0x82, 0x54, 0x80, 0xBF, 0x1F,
		0x00, 0x41, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
		0x9C, 0x0E, 0x8F, 0x28, 0x40, 0x96, 0xB9, 0xA3,
		0xFF,
		/* GC */
		0x00, 0x00, 0x00, 0x00, 0x00, 0x40, 0x05, 0x0F,
		0xFF,
		/* AC */
		0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
		0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F,
		0x41, 0x00, 0x0F, 0x00, 0x00,
	};
	int rg = 0;
	uint8_t reg;
	/* MISC */
	outport_b(VGA_MSCOUTW,regs[rg]);
	rg++;
	/* SEQ */
	for ( i=0; i<5; i++ )
		setvgareg(VGA_SEQ,i,regs[rg++]);
	/* need to unlock CRTC here */
	reg = getvgareg(VGA_CRTC,VGA_CRTC_EHBLNK);
	reg |= 0x80;
	setvgareg(VGA_CRTC,VGA_CRTC_EHBLNK,reg);
	reg = getvgareg(VGA_CRTC,VGA_CRTC_VTRTEN);
	reg &= ~0x80;
	setvgareg(VGA_CRTC,VGA_CRTC_VTRTEN,reg);
	/* keep 'em unlocked */
	regs[rg+VGA_CRTC_EHBLNK] |= 0x80;
	regs[rg+VGA_CRTC_VTRTEN] &= ~0x80;
	/* CRTC */
	for ( i=0; i<25; i++ )
		setvgareg(VGA_CRTC,i,regs[rg++]);
	/* GC */
	for ( i=0; i<9; i++ )
		setvgareg(VGA_GC,i,regs[rg++]);
	/* AC */
	for ( i=0; i<9; i++ )
	{
		inport_b(VGA_INSTAT1);
		outport_b(VGA_AC_I,i);
		outport_b(VGA_AC_W,regs[rg++]);
	}
	/* unblank display and lock palette */
	inport_b(VGA_INSTAT1);
	outport_b(VGA_AC_I,0x20);
	/* clear video memory */
	memset(m13h_mem,0x00,64000);
}
/* get the value of a VGA register */
uint8_t getvgareg( uint16_t port, uint8_t index )
{
	uint8_t save = inport_b(port);
	outport_b(port,index);
	uint8_t data = inport_b(port+1);
	outport_b(port,save);
	return data;
}
Exemple #3
0
static void m13h_getpal( uint8_t* pal )
{
	int i;
	for ( i=0; i<256; i++ )
	{
		outport_b(VGA_DAC_ADRM,i);
		*(pal++) = inport_b(VGA_DAC_DATA);
		*(pal++) = inport_b(VGA_DAC_DATA);
		*(pal++) = inport_b(VGA_DAC_DATA);
	}
}
uint8_t serial_transmit_empty( uint16_t dev )
{
	return inport_b(dev+5)&0x20;
}
char serial_recv_async( uint16_t dev )
{
	return inport_b(dev);
}
char serial_recv( uint16_t dev )
{
	while ( serial_recv_d(dev) == 0 );
	return inport_b(dev);
}
uint8_t serial_recv_d( uint16_t dev )
{
	return inport_b(dev+5)&1;
}