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Discussion
How many interrupt pins which of these SBC have
Dear isururivikelum,
The PDQ Board, which is based on the Freescale HCS12 processor, had about 30 maskable interrupts which mostly serve internal hardware subsystems. It also has an external non-maskable interrupt pin so that you can force an interrupt using a logic signal from external hardware. All of its interrups and how to use them are described in the Real Time Programming chapter of the PDQ Board Users Guide.
The QCard, which uses Freescale's 68HC11 processor, also has many interrupts serving its internal hardware I/O subsystems. Like the PDQ Board, it too has an external non-maskable interrupt pin so that you can force an interrupt using a logic signal from external hardware. All the interrupts are described in the Interrupt Service Routines chapter of the QCard Users Guide.