[Oberon] paint.mod attached

[thomas.kral at email.cz]

Hi Magnus, 



Perhaps experimenting with more colours is not that good idea after all. 




I read at Oberon-Pepino pages about a VGA line change from 3bit to 8bit 
video, I thought it was done in support of more colours, so modifying 
Display.Mod only will show more colours?




Tom





---------- Původní zpráva ----------
Od: Magnus Karlsson <magnus at saanlima.com>
Komu: ETH Oberon and related systems <oberon at lists.inf.ethz.ch>
Datum: 28. 3. 2016 22:24:34
Předmět: Re: [Oberon] paint.mod attached

"Also, the video circuit is stalling the processor when it needs to 
access memory. Today with 1 bit/pixel it is stalling the processor 
9.375% of the time.
If you adapt the hardware to say 4 bits/pixel then it would stall the 
processor 37.5% of the time.

Magnus

On 3/28/2016 12:13 PM, Jörg Straube wrote:
> Tom
> Having more than two colors needs at least the following
> - adapt the Verilog code VID.v
> - adapt Display.Mod
>
> For 4 colours, you obviously need double the video memory than today 
(today= 98304 byte = 9.3% of total memory)
>
> I think for a colour display it would be best to have more than 1 MB of 
memory.
>
> Jörg
>
>
>
> Gruss. Jörg
>> Am 28.03.2016 um 20:45 schrieb Tomas Kral <thomas.kral at email.cz>:
>>
>> Hi,
>>
>> Thank you, I would like to try on Oberon FPGA Station.
>>
>> I am also interested in the original pictures and Paint.Tool. Not sure
>> if these are preserved somewhere?
>>
>> Grapes.Pict Eschew.Pict New.Pict Clown.Pict Clown16.Pict
>> Paint.Tool
>>
>> I am led to believe FPGA is currently configured for two-colour Display
>> buffer, it would be therefore interesting to experiment with more
>> colours, if at all could be supported by the chip.
>>
>> Many thanks so far.
>>
>>
>> -- 
>> Tomas Kral <thomas.kral at email.cz>
>>
>>> On Fri, 2016-03-25 at 12:48 +0100, scrutinizer wrote:
>>> paint.mod attached
>>> let me know if you need some sample .pict files
>>>
>>>> Date: Thu, 24 Mar 2016 21:26:47 +0100
>>>> From: Tomas Kral <thomas.kral at email.cz>
>>>> To: oberon at lists.inf.ethz.ch
>>>> Subject: [Oberon] Oberon Paint.Mod
>>>>
>>>> Hi,
>>>>
>>>> I am curious about drawing programs for Oberon system as I am reading
>>>> PO.Applications chapter, describing Draw.Tool implementation.
>>>>
>>>> I have also seen a Clown picture at
>>>> https://en.wikipedia.org/wiki/Oberon_%28operating_system%29
>>>>
>>>> It shows Paint.Tool commands apparently coming from a Paint.Mod
>>>>
>>>> Paint.Mod does not seem part of Oberon System, I am just curious where
>>>> it originates?
>>>>
>>>> Cheers Tom
>>> --
>>> Oberon at lists.inf.ethz.ch mailing list for ETH Oberon and related systems
>>> https://lists.inf.ethz.ch/mailman/listinfo/oberon
>> --
>> Oberon at lists.inf.ethz.ch mailing list for ETH Oberon and related systems
>> https://lists.inf.ethz.ch/mailman/listinfo/oberon
> --
> Oberon at lists.inf.ethz.ch mailing list for ETH Oberon and related systems
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