Lpc2000

Bob,
Thanks, that's the answer I was hoping for. I appreciate the
prompt and accurate assistance.

I need to run14.7456mhz * 4 with pclk 1:1 while updating
flash. I need to not miss chars in a serial stream during
flashing or lose cycles of a system tick so I have the interrupt
vector table and receive ISR in ram so I can continue running
while the IAP calls block in the foreground. I assume the IAP
can handle periodic interrupts while it is working as long as they
save context. Does this all sound reasonable?

Have you ever seen source for the IAP routines?

Have you ever seen source for the boot loader routines?

Have you seen a procedure for replacing the bootloader
with a custom version. If a .hex file places code in the bootloader
area (while it isn't  remapped) will the phillips flash utillity
correctly write it?

My project includes a requirement to replace the default boot loader
code with a version that boots from a different data format 
(a proprietary RS485 based protocol) so I need to make the 
'factory load' while the default ohillips loader is present  replace the
bootloader so subsequent re-flashings can be done over the 485 link.


Landrum Haddix
lhaddix@...
http://web.qx.net/lhaddix