[Falkirk] 8 port serial card connections

[Graeme Thomson]

I'd expect you need a null modem adapter. I've never tried this before, but
I'd be surprised if you didn't need an adapter
On 19 Jun 2014 09:57, "Craig R. Skinner" <skinner at britvault.co.uk> wrote:

> To connect a Moxa 8 port serial card with octopus cable to an i386
> serial port, do I need just a DB9 (2x female) gender changer, or a null
> modem cable/mini adapter as well?
>
> The octopus cable ends are all male, as are the serial/comm ports.
>
> I've standard Cisco rollover cables to connect to my Sun servers RJ45
> serial ports.
>
> http://www.moxa.com/product/c168hpci.htm
>
> $ dmesg | egrep '(Moxa|^com)'
> puc0 at pci0 dev 18 function 0 "Moxa C168H" rev 0x01: ports: 8 com
> com4 at puc0 port 0 irq 9: ns16550a, 16 byte fifo
> com5 at puc0 port 1 irq 9: ns16550a, 16 byte fifo
> com6 at puc0 port 2 irq 9: ns16550a, 16 byte fifo
> com7 at puc0 port 3 irq 9: ns16550a, 16 byte fifo
> com8 at puc0 port 4 irq 9: ns16550a, 16 byte fifo
> com9 at puc0 port 5 irq 9: ns16550a, 16 byte fifo
> com10 at puc0 port 6 irq 9: ns16550a, 16 byte fifo
> com11 at puc0 port 7 irq 9: ns16550a, 16 byte fifo
> com12 at puc1 port 0 irq 5: ns16550a, 16 byte fifo
> com12: probed fifo depth: 0 bytes
> com0 at isa0 port 0x3f8/8 irq 4: ns16550a, 16 byte fifo
> com0: console
> com1 at isa0 port 0x2f8/8 irq 3: ns16550a, 16 byte fifo
>
> In my box'o-cable-crap I found a 3m female-female Belkin null modem
> cable, booted the box & got console over the com port. I don't want to
> buy more of those as the boxes are all in the same cabinet and the
> octopus cable ends are long enough. Do you reckon the gender changers
> would be sufficient?
>
> Cheers,
> --
> Craig Skinner | http://twitter.com/Craig_Skinner | http://linkd.in/yGqkv7
>
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