On Fri, 3 Aug 2001, Jason Petersen wrote: > (I didn't do this; have not needed the TOD clock. Have yet to find > software that uses it!!) GEOS and perhaps the game "Donald Duck's playground". :-) > 3. This is only needed for certain EEPROM burners AFAIK (If needed, you > could > use a Zener diode to get 9VDC here, which should work fine) Also perhaps for some RS-232 adapters, but you can build one easily from a Maxim chip (MAX232 or bigger) that converts +5 volts DC to -10V and +10V with the help of some external capacitors. > 4. I have no workaround for this. I think, if you're building a tower > c64 who needs a stinkin' Datasette! (I know; certain people would argue > with this ;) Recently, I looked at the datassette circuit, since I'm developing an RS-232 adapter for the datassette port. As far as I remember, the 9-volt supply for the cassette motor output is unregulated (meaning that it can be higher than 9 volts). Perhaps you could wire the 12 volts there directly. I don't know if the zener diode(s) in the cassette motor driver circuit could take 12 volts without emitting smoke. > Your space requirements will depend on the case, of course. But no > matter what, plan on doing plenty of soldering! :) Last year I noticed that someone built a hand-held Atari VCS 2600. He had sawed the circuit board to at least 2 pieces and connected the pieces by soldering. I'm not sure, but perhaps one tower hack I saw on the net used a similar approach: bending a C64 mainboard to a 90-degree angle by sawing and soldering. Marko Message was sent through the cbm-hackers mailing list
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