Lpc2000

Is anybody else using the external bus to interface on the lpc2292. I 
have 16 bit Sram and an 8 bit device connected to the external bus. 

Everything works fine except after a power on reset. I have to put a 
delay in software of a few hundred milliseconds after setting up the 
bus for the sram to work correctly.

If after power on I toggle the reset line it always works. All the 
voltages are stable when the micro comes out of power on reset but it 
won't access the sram correctly without a software delay.

I've tried extending the time the reset line is enabled during power 
on to make sure all voltages are stable but it does not help.

Below is the code I'm using to set up the sram on CS1, I've put in 
maximum waits but it doesn't help

dummy = PINSEL2;
// set extended memory D0-D16 CS,CS1,CS2,CS3 A0-A19
dummy &= ~(0x00000020);
dummy |= 0x00000010;
	
// enable /WE,/CS1
dummy |= 0x00000900;
		
// enable /CS2,/CS3
dummy |= 0x00014000;
	
// enable A0,A1, A2-A19
dummy |= 0x0d800000;
					
PINSEL2 = dummy;	

// set up the external sram on CS1
dummy = BCFG1;	
// maximum idle cycles
dummy |= 0x0000000f;	
	
// maximum wait cycles, 16 bit wide bus
dummy |= 0x000007e0;	

// maximum wait cycles
dummy |= 0x0000f800;	
// 16 bit bus
dummy &= ~(0x30000000);	
dummy |= 0x10000000;					
BCFG1 = dummy;