From: Marko Mäkelä (marko.makela_at_hut.fi)
Date: 2007-01-11 09:23:12
On Wed, Jan 10, 2007 at 11:38:14PM +0200, Pasi Ojala wrote: > > I have one unreliably working NTSC VIC-20 circuit board, and I > > might want to convert one PAL VIC-20 to NTSC, like Pasi Ojala did. > > Emphasis on the "circuit board" if I remember correctly :-). Yes, it's the board I got from Daniel Dallmann (of LUnix fame). It is the non-CR board with a two-prong power connector. Interestingly, the two-prong connector is mechanically incompatible with the European two-prong Vic-20 connector if I remember correctly. I've been using a car battery charger (12V, several amps) as the power supply. It could be that the board doesn't like the power supply. The full-wave rectified AC output from it should be fine, because the original Vic-20 expects AC, but the connection from the slightly rusty alligator clips might be unreliable. Maybe I'll fire up the computer soon again, to see your NTSC-fixed VIMM II. > The NTSC-converted VIC20 works okay, although it still uses a > PAL ROM for that fancy twisted screen centering.. As a final > touch the machine actually has a scandinavian keyboard. <g> You should burn your own NTSC KERNAL with Swedish/Finnish keyboard table. :-) And JiffyDOS (port it yourself if it doesn't officially exist). :-) > (I have three 6560's here from Marko's batch in safe-keeping in > case someone really needs one.) Okay, after I ship one to Ruud, we both will have 3 chips left. We might be the ones with most chips left, since I must have distributed the 42 chips to several people. Marko Message was sent through the cbm-hackers mailing list
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