STK1002/Troubleshooting

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NEXUS interface fails when PB[0..7] is connected to GPIO header on STK1000 by jumpersetting SW4

GPIO[0..7] are multiplexed with NEXUS signals.
Remove the jumper that connects PB[0..7] to GPIO lines.

DMARQ0 and DMARQ1 does not behave according to specification.

These pins on AP7000 share functionality with Non Maskable Interrupt (NMI) and Interrupt A and they are therefore connected to debouncing capacitors on STK1000.
USE DMARQ2 or DMARQ3 if possible. If DMARQ0 or DMARQ1 must be used then remove C65 and C66 on STK1000.
Static version created: 2007-03-07
Copyright (c) 2007 Atmel Corporation