English Amiga Board - View Single Post - Make CLI 1 bitplane on OS1.3-3.1 CORRECTLY? ("Add21k")

Thomas Richter · 11 September 2021, 14:16

There is a Kick 1.3 extension to the preferences structure <intuition/prefs.h> that contains the following fields:

Code:

    UWORD    wb_Width;		/* override default workbench width  */
    UWORD    wb_Height;		/* override default workbench height */
    UBYTE    wb_Depth;		/* override default workbench depth  */

Thus, creating a DEVS:System-Configuration on your disk that provides alternative values for them might possibly work. Note that the system-Configuration file is just a binary dump of the Preferences structure in the above include file.

Also note that calling SetPrefs() in the boot code will not work. The dos.library startup code will read DEVS:System-Configuration if it exists, and will install it into intuition, reverting any change you made. Thus, placing changes in the file is a way to try. This does not require any custom boot block.

11 September 2021, 14:16	#8
Thomas Richter Registered User Join Date: Jan 2019 Location: Germany Posts: 3,233	There is a Kick 1.3 extension to the preferences structure <intuition/prefs.h> that contains the following fields: Code: UWORD wb_Width; /* override default workbench width / UWORD wb_Height; / override default workbench height / UBYTE wb_Depth; / override default workbench depth */ Thus, creating a DEVS:System-Configuration on your disk that provides alternative values for them might possibly work. Note that the system-Configuration file is just a binary dump of the Preferences structure in the above include file. Also note that calling SetPrefs() in the boot code will not work. The dos.library startup code will read DEVS:System-Configuration if it exists, and will install it into intuition, reverting any change you made. Thus, placing changes in the file is a way to try. This does not require any custom boot block.