Hiya Marko! --- Marko_Mäkelä <firstname.lastname@example.org> wrote: > Then I guess it can't be the same hack that was > published in the 64'er Yes, actually I think we're talking about the same hack. I've never seen an issue of 64'er though :( > Magazin 2/94 or 3/94. That hack used lots of logic > glue to implement the > I/O port at locations 0 and 1, and to construct a > clock signal that > generated two clock pulses for the CPU during the > CPU bus cycle halves. Well, the schematics didn't LOOK complex to me. But I am not an electronics professional. > In other words, it ran the 6502 at 4 MHz for 2 > cycles and at 0 MHz while > the video chip was doing its transparent DMA. In > this way, the computer > ran at 2 MHz with the screen turned on. > Another possibility is to use a C128 video chip to > produce the exact > equivalent of the C128 "2 MHz mode" on a C64. Wow, I didn't know you could do that! > Marko > > - > This message was sent through the cbm-hackers > mailing list. > To unsubscribe: echo unsubscribe | mail email@example.com. ===== WILL PAY $$$ for a RAMFast SCSI Card Check my NEW HOMEPAGE for details. www.geocities.com/profdredd/ Try PayPal today - Its Free! :) __________________________________________________ Do You Yahoo!? Yahoo! Auctions - Buy the things you want at great prices! http://auctions.yahoo.com/ - This message was sent through the cbm-hackers mailing list. To unsubscribe: echo unsubscribe | mail firstname.lastname@example.org.
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