Timeda 8-multiport adapter: only 2 ports available

[Marcel Moolenaar]

On Dec 15, 2008, at 9:49 AM, Boris Samorodov wrote:

> Marcel Moolenaar <xcllnt at mac.com> writes:
>
>> One last thing that we could try.
>
> I'll try this out and report back, thanks.
>
>> If the rclk for the
>> upper 6 ports is wrong, then the baudrate will not be
>> as programmed. For all ports we now have an rclk that's
>> 8 times the default (i.e. RCLK*8). See if the baudrate
>> is 8 times slower than what you specified.
>>
>> i.e. If you specified a baudrate of 115200, see if you
>> need to program the other side for 14400. You may want
>> to pick a baudrate that's yields a more standard rate
>> when divided by 8.
>>
>> If this works, then the upper 6 port have a standard
>> RCLK.
>
> As I undrestood from README for DOS, those ports may be
> initialized at high rate (8x?) so when BIOS reports 115200
> the card actually gives 900k. To return to normal speeds
> the card should be initialized accordingly.

Ok, this indicates that RCLK*8 is right.

At this time I'm out of ideas. We should just look at the
NetBSD or Linux driver...

Could you open a PR so that we can track this?

Thanks,

-- 
Marcel Moolenaar
xcllnt at mac.com