Re: [Vice-emu-mail] Commodore PET/CBM Support

Not sure where you can actually set NTSC in the settings. I only see the 
different models to choose from there. In the end all the older machines 
(before 4000/8000) use 60 Hz-monitors and only the later 
4000/8000-models have different Editor-ROMs with 50 or 60 Hz-modes. 
Actually for the 4000-series only the "fat" 12 inch-screens have the 
CRTC, the smaller 9-inch screens do not have the CRTC-chip and should 
all be 60 Hz.

See here on Zimmers:

https://www.zimmers.net/anonftp/pub/cbm/firmware/computers/pet/index.html

Look for the "edit-..."-ROMs down below. Also check this post on 
Stackexchange:

https://retrocomputing.stackexchange.com/questions/13034/did-all-integrated-commodore-pet-monitors-always-use-60-hz-refresh

If you want to check what your actual running VICE-emulator is using for 
the 4000/8000-models with CRTC, go into the Monitor (ALT+H) and type "io 
e880" - this will give information on the CRTC-controller (at $e880) and 
further down also show the timings. If you want to have a 60 Hz-machine 
you should use the accompanying editor-ROM from Zimmers and place it 
under "Machine - ROMS" in the Settings-menu.

Hope that helps,
tokra

Am 14.07.2025 um 19:20 schrieb KnightFire66--- via Vice-emu-mail:
> Hello,
>
>    I'm a big fan of the Commodore PETs/CBMs and I'm having issues with xpet.  My issues stem from NTSC (60Hz) / PAL (50Hz) parameters and default settings... they all seem to favor 50Hz, even when specifying the model and NTSC.  I have compiled both current versions under Mint Linux.  I own two 2001s, a fat 4032, and two 8032s; I obtained my ROMs from an older Vice release and even tried ROMs from MAME.
>    For me, in Canada, my assumption has been that the 2000, 4000, and 8000 series models should default to 60Hz, and only the 3000 models should default to 50Hz.
>
>    I wonder if this is an unintended side affect of http://sourceforge.net/p/vice-emu/45250
>