🚀 go-pugleaf

Sorry that my reply took so long, but I tried to post it seveal times
but it just didn't work.

In article <1992Aug16.142856.39472@urz.unibas.ch>
gaspar@urz.unibas.ch writes:

>In article <1992Aug15.202637.2558@rhrk.uni-kl.de>,
m_sattle@tangram.informatik.uni-kl.de (Matthias Sattler) writes:
> In <1992Aug6.094438.9971@slcs.slb.com> long@scr.slb.com (Peter Long) writes.
>> 
>> 
>>> There was some mention of a mode 1024x768x16, is it possible to post
>>> the setup for this mode I have not been able to replicate it on my
>>> A5000 or A540.
>> 
>> 
>> 
>> 
>> O.K. here it is. This mode can be used on A540 and A5000 but it will
only have
>> 36Hz picture frequency. If clock your VIDC with 50 Mhz it will have
50Hz then
>> (I tried this and it worked fine except that 50Hz is still too flickery
>> for me).
>> If you choose 60Mhz for your VIDC it will have 60Hz but my VIDC
didn't do this
>> (as I wrote in my previous article).
>> *sniff*

>[code deleted]

>How do you clock the VIDC with 60MHz? Do you just replace the quarz in the 
>VIDC enhancer? Are there any known problems (apart from the one you mentioned)
>that may cause damage to the VIDC?
>The cooling of the VIDC could be done with a product called Icecap. I don't 
>know if there is one that fits the size of the VIDC, though.
>
>laci

I just replaced the 36 MHz quarz on the board of my A5000 by a 60 MHz one. This
had several results on my A5000.
1.) The VIDC is clocked faster so I could do 1024x768 60Hz (if your vidc
can do this)
2.) Mode 31 is 93 Hz (if your monitor can do this...)
3.) 800x600 256 Colours isn't possible any more
4.) There are problems with very low-res modes like mode 0, but I don't
know why
5.) The computer gets remarkably faster... >22000 Dhrystones in mode 21, 28 
    (with CPU 30 MHz) and I don't know why as well.

I think I will have to buy a technical reference manual of the A5000 to
find out
about the reason of the funny behaviour of my computer.



PS. I will soon post some very nice 50 Mhz. screenmodes.


Matthias Sattler