[arachne] Re: Maximal width of virtual screens

Arachne at FreeLists---The Arachne Fan Club!

On Mon, 23 Feb 2009 09:54:40 +0000, Udo Kuhnt wrote:

> Hi Glenn,

>> The width of the virtual screen is tied to the
>> arachne.cfg setting of 'BMPwidth'

>> Soooo.... increase that setting via the 'Options - Local settings'
>> setup page to its max value of 2048
>> (which is double the width of our max screen res of 1024x768)

> thanks for the info and the code snippet.

> I experimented with this page

>
http://www.unet.univie.ac.at/~a0503736/php/drdoswiki/index.php?n=Discussion.Discussions

> which gave me trouble, and found that I could only raise the width to
> a maximum of 1337; for larger values, Arachne stopped generating a
> virtual screen altogether.

> Do you have any idea why larger values do not work?

The major problem with that page is not its width...
but rather is its length.

It takes 60 hits of the pagedown key to reach the bottom when in
1024x768 res at fullscren mode.

When means that a virtual screen would need to be over 46000 lines.

Let's say that we set the width at 1,400 and the length at 46,000

1400 * 46000 * 1 (byte per pixel) == 64,400,000 bytes of XMS needed
for that Vscreen

I was finally able to edit my cached copy that page down to less than
30,000 lines in the Vscreen

Set at 1024x768 256color I ended-up with this BMP screen-cap via Ctrl+P

 Volume in drive H is MCCORKLE_06
 Directory of  H:\ARACHNE

_4PRT    BMP 39856054  2-23-09  6:25p

39megs of XMS were required for that Vscreen with these swettings in
arachne.cfg

VirtualScreen 30000
BMPwidth 1400

-- 
 Glenn
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                  Arachne at FreeLists                  
-- Arachne, The Premier GPL Web Browser/Suite for DOS --

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