[iyonix-support] Re: No screen on Boot-up

  • From: Chris Evans <chris@xxxxxxxxxxxxxxx>
  • To: iyonix-support@xxxxxxxxxxxxx
  • Date: Thu, 22 Mar 2007 11:13:52 +0000 (GMT)

On Tue 20 Mar, Roger Darlington wrote:
> On 19 Mar 2007, Tennant Stuart wrote:
> [snip]
> >               x_res:920
> >               y_res:600
> >               pixel_rate:36000
> [snip]
> > How would I make the screen a bit wider without dropping the Hz too much?
> > 
> Try increasing the pixel rate. 30kHz is very low!
> I use 260kHz for my monitor.
> If your monitor can take about 60kHz, then bump it up to about that.

I think you have got confused, pixel rate doesn't equal scan rate  though
they are related to each other, an analogue monitor has no idea how many
pixels are on a single line. 240 & 1600 would look exactly the same to a
monitor if all of the same colour!

Having said that manualy upping the pixel rate by 10% does have a near 10%
increase in refreshrate (not 1:1 as the other timings will not be being
changed but horizontal scanning takes about 90% of the total time)

Chris Evans

CJE Micro's / 4D                'RISC OS Specialists'
Telephone: 01903 523222             Fax: 01903 523679
chris@xxxxxxxxxxxxxxx     http://www.cjemicros.co.uk/
78 Brighton Road, Worthing, West Sussex,     BN11 2EN
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