>>>>> "Peter" == Peter Karlsson <firstname.lastname@example.org> writes: Marko> Are you sure that they are surface-mounted? Peter> Yes. They are. I've already checked that. Sure you don't mean that they're soldered to the motherboard without a socket? It's just that I've never heard of surface mounted chips in a commodore 8-bit, or surface mounted ROMs in any computer for that matter. Marko> You can desolder a Chip Select or Output Enable signal from the Marko> original chip and connect it to +5V or ground, whichever is the Marko> inactive level. Peter> Hmm, where do I find out which one is which? Chip directory or Giant IC Masturbator have them listed. What type is the ROM, i.e. 2364, 2564 or 2764? How many pins are there on the JD? It should be a 28-pin 2764 mounted on a small adaptor board with 24 pins, since that's what Sandinge had in stock IIRC. If your original ROM is 24-pin (and if it isn't socketed I bet it is) you can just piggy-back the JD onto the existing ROM like Marko said. You could also cut the legs of the existing ROM close to the chip and piggy-back it to the legs, but you'd have to be really careful not to damage any traces on the board. -- ___ . . . . . + . . o _|___|_ + . + . + . . + + Per Olofsson o-o . . . o + MagerValp@Goth.Org - + + . http://www.cling.gu.se/~cl3polof/ - This message was sent through the cbm-hackers mailing list. To unsubscribe: echo unsubscribe | mail email@example.com.
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