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DISCUSSION
The Picasso96 drivers allow the Amiga operating system to use screen modes other than those allowed
by the Amiga graphics chips, giving access to all the resolutions of the PC display card.
Normally, on all Amiga systems, whether emulated or not, a unique ID is associated to each
screen mode. This ID is used, for example, to open the initial screen, when the system
boots. If a screen mode is not available any more, the system should in theory fall back
gracefully to another, available screen mode. This occurs when changing display card or
drivers on a "real" Amiga, but in the case of the emulation it is also affected
by updates in the PC display hardware and drivers, and can also happen when the emulation
software is upgraded. In practice, some programs do not behave properly when the requested
screen mode is not available, and this may cause the Amiga operating system to crash. If this happens at
boot time, the Amiga will never boot properly, crashing each time.
Since in Amiga Forever
the Amiga system files are accessible from the PC file system, this problem can be solved by deleting the
"screenmode.prefs" file containing the system default screen settings, which
are stored inside the "Prefs/Env-Archive/Sys" directory of the Amiga system
drive.
The exact location of this file under Windows may vary depending on the
installation options, but in general it is inside the "Amiga Files"
folder. For example, the full path (starting with an environment
variable) on a
current Amiga Forever installation on a Windows system is "%AMIGAFOREVERDATA%\Shared\dir\System\Prefs\Env-Archive\Sys\screenmode.prefs".
Expanded to an absolute path, on a Windows Vista system this
would be something like "C:\Users\Public\Documents\Amiga
Files\Shared\dir\System\Prefs\Env-Archive\Sys\screenmode.prefs".
Additional Information
The following article explains how to programmatically find
the "Amiga Files" directory on Windows, independently of an
Amiga Forever installation:
The following article explains how to programmatically find
the Amiga Forever installation directories on Windows:
This article contains additional information about the ROM
and operating system versions included in Amiga Forever:
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