I was curious about the pin assignment on the LPC810 (DIP8) after an ISP load and boot cycle. Here are the values that turned up
PINASSIGN0 FFFF0004
PINASSIGN1 FFFFFFFF
PINASSIGN2 FFFFFFFF
PINASSIGN3 FFFFFFFF
PINASSIGN4 FFFFFFFF
PINASSIGN5 FFFFFFFF
PINASSIGN6 FFFFFFFF
PINASSIGN7 FFFFFFFF
PINASSIGN8 FFFFFFFF
PINENABLE0 000001B3
PIO0_0 01010101
PIO0_1 01010101
PIO0_2 00000101
PIO0_3 01010101
PIO0_4 00000101
PIO0_5 00000000
The value in PINASSIGN0 show that TXD0 is on PIO0_4 and RXD0 is on PIO0_0.
The other PINASSIGN registers are at their default values as is PINENABLE0
ioprog 