[...]
> This mod for the MS 400 has two variants: One diode mod proposed by
> Roy Engehausen, AA4RE, and a CMOS IC by someone else later, but the
> principle is the same.
>
[...]
>
> Someone told me that some 2.1.x kernel could share IRQ's, and that
> 2.0.36 does not.
>
> I mention this because it is very cheap to get even two port cards to
> eat a single IRQ line...if it worked OK !! (BPQ did....it is
> possible on a PC under MSDOS).
>
> Could someone update/clarify us on this matter ?
I do not remember when I started playing with interrupt sharing, but it was at
least since the mid 2.1.x series.
In the PC I am writing this on there are
2 serial ports on the mainboard (hardwired to IRQ 3 & 4)
4 serial ports on a standard 4s3p card with a 'diode mod' on irq 15
8 serial ports on a 'fourport-type' card on irq 5
That makes ... ehm ... 14 simultaneus serial ports.
I've never seen any problems with interrupt sharing on linux. Attached devices
are Printer, Plotter, 3 Terminals, Modem, UPS, Mouse, Baycom-Modem,
Graphic Tablet, Trackball. The PC is a Digital AXPpci33 (alpha processor) and
before that my primary PC was an cyrix486DX/4 with a similar setup.
Hmm - I still didn't test the Baycom on a shared interrupt....
(it's on irq 3 now)
>
> Until I get a newer mainboard and cards, I would like to be able
> to squeeze the most out of my old, and still functional hardware.
me too ;-)
>
> 73 de Jose, CO2JA
> ---
>
73 Thorsten, DL8BCU
--
| Thorsten Kranzkowski Snail: Niemannsweg 30, 49201 Dissen, Germany |
| Mobile: ++49 161 7210230 Inet: [EMAIL PROTECTED] |
| Ampr: dl8bcu@db0nei.#nrw.deu.eu, [EMAIL PROTECTED] [44.130.8.19] |
