JP> Does this hack involve running PAL machines with a NTSC crystal? JP> As far as I know, the 6510 runs at ~1 MHz for NTSC machines. It JP> would be super cool if there's a way to overclock to 1.3 MHz JP> easily. But somehow I think this will only work on PAL.. >You put a switch over the PAL/NTSC jumper. The jumper controls the >clock frequency divider -- /18 for pal and /14 for NTSC iirc (probably >not, just got home from the pub :). The vic won't be able to show any >graphics -- or at least 15 kHz monitors won't be able to display it. You can also configure a bit from the datasette port (and an inverter?) to control the switching via software. Using the borders trick which is done with 2MHz you can get some speed-up and some display, but with full screen viewable its only a 9% increase. I tried this trick also with a C128 (speeding it up to 2.66MHz) but the VIC chip in that machine doesn't like it too much and it works for a few minutes then becomes unreliable... works the next day, so no permanent damage! - Nick PLEASE TAKE NOTE: The contents of this email (including any attachments) may be privileged and confidential. Any unauthorised use of the contents is expressly prohibited. If you have received this email in error, please advise us immediately (you can contact us by telephone on +61 8 9441 2311 by reverse charge) and then permanently delete this email together with any attachments. We appreciate your co-operation. Whilst Orbital endeavours to take reasonable care to ensure that this email and any attachments are free from viruses or other defects, Orbital does not represent or warrant that such is explicitly the case (C) 2000: Orbital Engine Company (Australia) PTY LTD and its affiliates Message was sent through the cbm-hackers mailing list
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