Posted By
JamesC
on 2014-08-26
18:44:32
|  Re: JiffyDOS PAL
Craftsman: according to an older thread on this site, you definitely need the trimmer capacitor to "fine tune" the crystal you swapped in. http://plus4world.powweb.com/forum/21354
Problem is, I don't know which capacitor to suggest. 
The following link uses a 22pf with a 17.734475MHz crystal.
http://www.fascinationsoftware.com/FS/html/Plus4-videoswitch.html
An OCR of a service manual shows a 17.734470 MHz crystal paired with a 32pf capacitor. Search for PAL within https://archive.org/stream/Service_Manual_Model_Plus_4_Computer_1984-10_Commodore_PN-314001-04/Service_Manual_Model_Plus_4_Computer_1984-10_Commodore_PN-314001-04_djvu.txt
I have a "PAL conversion kit", supplied by Jim Heil many years ago. He didn't send a capacitor with it, nor did he send instructions saying to source one locally.
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