MUX driver for multiple ports (lines)
Hallo Ryan,
have you already got docu on the serial MUX board ? Or where do you have the information about `#define's from. Is the MUX_LINE_OFFSET (= 0x80) the key point.
I have tried to access the board at
membase + MUX_OFFSET + line * MUX_LINE_OFFSET,
but the first write access to /dev/ttyB1 results in a hang up (completely, even no network interrupts were processed !).
Operates the MUX driver in polling mode ? Not in IRQ mode ?
Christoph
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Hello Christoph,
No, I still have not found any documentation on the Serial Mux driver. The work I did was referenced off the HP-UX mux driver.