BTW writes (STMIA) to IPU registers are apparently not corrupted, only LDMIAs are affected - in pure userspace as well. -- Krzysztof Hałasa Sieć Badawcza Łukasiewicz Przemysłowy Instytut Automatyki i Pomiarów PIAP Al. Jerozolimskie 202, 02-486 Warszawa