Code to boot into PAL or NTSC modes?

[blakespot]

I own an enjoy an HxC2001 floppy emulator. I have it in my Amiga 2000.

http://www.bytecellar.com/2011/04/17/my-sdcard-hxc-2001-floppy-emulator-adventure/

Many systems can benefit from the device, but few have written for them a native, software boot menu. The Amiga is one.

I am an American user with an NTSC A2000. I would, usually, load Degrader to set to PAL mode and then reboot to run all demos and many games. This is not really possible in the event chain of using the HxC2001.

I have requested that the devs add PAL / NTSC boot options into the native Amiga disk select app, on reboot. The devs have asked after Degrader. If it is open source. What they are after is example code showing how to change the PAL / NTSC system state on an Amiga with the sufficient Agnus to get it done.

Can someone point me to code that shows how to change state on reboot, to help these guys get the feature added. It would be a huge boon to me and all that use the HxC2001 on the Amiga I think.

Thanks much to anyone who can help. I will pass any and all info shared here along to the HxC2001 devs.





bp

[blakespot]

The HxC2001 boot menu program would always issue a reboot, making the task simpler (then live-switching a running system to a different mode, without reboot), thankfully.


bp

[blakespot]

Regarding the 50Hz/60Hz i take the lazy way : Add Degrader into the boot script.

http://hxc2001.com/download/floppy_drive_emulator/AUTOBOOT_Amiga_WithDegrader.zip

Waiting for feedback.

What is this? Please explain!



bp

[blakespot]

Either add a toggle switch to Agnus' PAL/NTSC jumper, or if you are using OS3.x (maybe 2.x as well), just hold down the mouse button while booting and select NTSC or PAL.

Boot menu in ROM works for little.



bp