Lpc2000

Hi,All

I connected Powertips' 320x240 LCD with sed 1330 onboard in the 
following way:

p19..p26 = d0..d7
p27 = #wr
p28 = #rd
p29 = a0
p31 = #cs

I used the following code to communicate with the module:

void WriteLCD(unsigned char op)
{
  unsigned long port;

  port=op;
  port<<=19;
  IOCLR=0x7F80000;            //D0-D7
  IOSET=port;
  wait_us(1);

  IOCLR=1<<27;            //#WR  
  wait_us(1);
  
  IOSET=1<<27;
  wait_us(1);
}

void WriteCommand(unsigned char op)
{
  IOSET=1<<29;            //A0
  WriteLCD(op);
  wait_ms(1);
}
void WriteData(unsigned char op)
{
  IOCLR=1<<29;            //A0
  WriteLCD(op);
  wait_ms(1);
}

void LCDInitialize()
{
  IODIR|=0x3FF80000;
  IODIR|=(unsigned long)1<<31;
  IOSET=1<<27;                //#WR
  IOSET=1<<28;                //#RD
  IOCLR=(unsigned long)1<<31; //#CS

  WriteCommand(0x40);
  WriteData(0x31);
  WriteData(0x87);
  WriteData(0x07);
  WriteData(0x27);
  WriteData(0x39);
  WriteData(0xEF);
  WriteData(0x28);
  WriteData(0x00);
}

then goes mode select etc
not the case 'cause it is from the same project
based on AVR which works perfectly

I tried even the slowest timings but still no reply from lcd,
it only flashes

is there something wrong with bus emulation?

thanks in advance