HiSoft Basic 2.10
=================
UPDATE version 2.0
==================
I've now tested all the RGB/TV resolutions. See the extra table.
FALCON SCREEN RESOLUTIONS
=========================
One major problem I had when making my programs was detecting which damn
screen resolution the user was loading my programs in. Could they be in
a weird True Colour resolution? If they have a VGA do they have the
Double Line On or Off ? All these questions and no obvious answer made
me fiddle around and here is what I found...
SYSTAB & GETREZ%
================
Both these calls are supposed to be used independantly, but with the
amount of resolutions on the Falcon it makes sense to combine their
results to find out the correct resolution and warn the user
accordingly.
r%=peekw(systab)
g%=getrez%
The above are the methods used from within HB. You will need to have
the Xbios library installed for the getrez command to work or else it
will return a value of 0 each time regardless.
RESULTS for a VGA
=================
Falcon Resolution SYSTAB GETREZ
-------------------------------------------------
4 colour, 40 column, DL Off 2 7
4 colour, 80 column, DL Off 2 2
4 colour, 40 column, DL On 2 0
4 colour, 80 column, DL On 2 1
16 colour, 40 column, DL Off 4 7
16 colour, 80 column, DL Off 4 2
16 colour, 40 column, DL On 4 0
16 colour, 80 column, DL On 4 1
256 colour, 40 column, DL Off 8 7
256 colour, 80 column, DL Off 8 2
256 colour, 40 column, DL On 8 0
256 colour, 80 column, DL On 8 1
True Colour, 40 column, DL Off 16 7
True Colour, 40 column, DL On 16 0
ST LOW 4 0
ST MED 2 1
ST HIGH 1 2
RESULTS for an RGB
==================
Falcon resolution SYSTAB GETREZ
-------------------------------------------------
2 Colour, 80 column, Int Off 1 1
2 Colour, 80 column, Int On 1 2
4 Colour, 40 column, Int Off 2 0
4 Colour, 40 column, Int On 2 7
4 Colour, 80 column, Int Off 2 1
4 Colour, 80 column, Int On 2 2
16 Colour, 40 column, Int Off 4 0
16 Colour, 40 column, Int On 4 7
16 Colour, 80 column, Int Off 4 1
16 Colour, 80 column, Int On 4 2
256 Colour, 40 column, Int Off 8 0
256 Colour, 40 column, Int On 8 7
256 Colour, 80 column, Int Off 8 1
256 Colour, 80 column, Int On 8 2
True Colour, 40 column, Int Off 16 0
True Colour, 40 column, Int On 16 7
True Colour, 80 column, Int Off 16 1
True Colour, 80 column, Int On 16 2
THAT'S IT!
==========
I am sure you can see from the above table that when you check the
systab and getrez results if they equal 16 and 7 then the user is in the
True Colour, 40 column, Double Line Off mode... and so on...
PROBLEM
=======
There is only one problem though. The ST LOW results (4/0) are the same
as the 16 colour, 40 column, Double Line On (4,0). This is because
essentially they are the same screen dimensions but you still might like
to know which one of the two it is. Well I can't help you here I am
afraid but if anyone out there can then PLEASE get in touch!
>>> Another problem is that there is no way to detect which type
of monitor the user has. The RGB and VGA results are pretty much
the same in most respecst, therefore you have problems, especially
as although the systab and getrez results are the same, the
display area available most certainly is not <<<
CONTACT
=======
Falcon owning, HiSoft Basic programming people please get in touch with
me to swap ideas and routines.
Richard Davey, 10 Oak Drive, Portishead, Bristol, BS20 8QS, UK.
Phone: +44 (0) 275 843241
Email: requiem@armory.com
The email will become active again during October 1994. Please allow
some time for a reply as all mail is forwarded to me when at University.
Anyone who wants details about the FALCON OWNERS GROUP just send me a
single first class stamp and your address.