Hi,
These two registers (EXTMODE, EXTPOLAR) are listed in the newer user manual of LPC2106 ( UM10275, 4 June, 2008 version), but are not listed in the older user manual, and their definitions are also absent in IAR Embedded Workbench 5.11. However, the newer user manual doesn't list these registers as specific to /01 revision. As I am currently using the older LPC2106 (not the /01 revision) can I rely on those registers being there or not? More specifically since I want an edge triggered external interrupt on EXTINT2, how can I do that if these registers are not there?

I understand that if these registers are there then its just a matter of declaring them at the specific location.

Kindly advise,
Akshay Mathur

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