On 11/26/2012 09:02 PM, silverdr@wfmh.org.pl wrote: > > On 2012-11-26, at 20:04, Gerrit Heitsch wrote: > >> Also, some people claim, that the old clock generator (74LS629 and MC4044P on the 250407 boards) produces less jitter than the 8701. > > In any case I would be glad to put my hands on one "Japan board" of those.. The problem is that I can't buy all 64s of eBay in hope that one of them has inside the board I want ;-) > And sellers usually don't know and don't want to open the machine to take a photo.. Well, the 250407 is one of the older boards, usually found in C64 from '83 and '84. Try to hunt down a C64 with the light brown F-keys (VIC20-keyboard), those have that board. You might even get one with a 6569R1 (or R3) VIC in ceramic. :) Like this one: http://biosrhythm.com/wp-content/uploads/2012/01/arduino64kb1-840x575.jpg Gerrit Message was sent through the cbm-hackers mailing listReceived on 2012-11-26 21:00:57
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