I recieved my Penultimate+ expansion today. I bought it specifically to do software testing on my NTSC VIC20. However, it doesn’t boot. It works on my PAL machine and I tested two other expansions on the NTSC machine plus Jelly Monsters and those worked.
Does anyone here have experience with Penultimate+ and NTSC to know if it’s working or not? The device web page claims NTSC compatibility.
Penultimate+ and NTSC
Moderator: Moderators
Re: Penultimate+ and NTSC
This proved to be a power supply issue. The CPU gets 4.7 V when the cartridge is plugged in.
-
- Vic 20 Enthusiast
- Posts: 160
- Joined: Wed Feb 24, 2021 11:32 am
- Location: NC, USA
- Occupation: Engineer
Re: Penultimate+ and NTSC
I assume from your second message that you have solved the issue, but for what it's worth, the Penultimate + works flawlessly for me on NTSC hardware.
Re: Penultimate+ and NTSC
Thanks!doug_in_nc wrote: ↑Tue May 24, 2022 12:56 pm I assume from your second message that you have solved the issue, but for what it's worth, the Penultimate + works flawlessly for me on NTSC hardware.
I’ll be attempting to replace the capacitors in the machine as a first step to see if that brings up the CPU voltage.