Re: More detail... Help with copying D64 files to Disk

From: Peter Rittwage <peter_at_rittwage.com>
Date: Thu, 22 Oct 2009 07:46:36 -0500
Message-id: <3a0d867b014db13b30c160389e5f1b7a@rittwage.com>
It sounds to me like you are trying to run PAL games on an NTSC C64.  Most of
the time, they crash looking for a raster interrupt that never occurs, since
there aren't as many screen lines.

To test this, you can run VICE in NTSC mode to see if the game works before
transfer.  This isn't a 100% test, because VICE is not exactly like an NTSC C64,
but it should be mostly close enough.

Pete Rittwage
C64 Preservation Project
http://c64preservation.com




On Wed, 21 Oct 2009 20:58:02 -0400 "Scott" <rylos@charter.net> wrote

> Hopefully someone out there has tried this and will be able to help me sort
> this out.
> 
> 
> 
> I am having a high failure rate copying D64 files to disk.
> 
> It seems that Win Vice is more compatible than my 64C setup. Most of the
> D64, Prg and P00 files work great on Win Vice but once copied to disk, fail
> once loaded.
> 
> 
> 
> Example is Bedlam, I have found 7 or 8 different sources of this program,
> all seem to work on Vice but once I transfer them to disk, then to my 64C
> setup, they don't work.
> 
> 
> 
> Normally the screen goes black, freezes after RUN or has lots of garbage on
> the screen. Some fail after the Crack screen runs (The crack screen always
> seems to work).
> 
> 
> 
> PAL vrs NTSC. I've read a ton on the internet and it seems that for the most
> part, PAL games should work but run faster. Though I'm pretty sure some of
> them won't work at all which may be part of my problem. But I'm having
> trouble (on the 64C side) even with the ones that say they are NTSC.
> 
> 
> 
> My PC setup: (no more clone drive)
> 
> XA1541 adaptor connected to a 1541 II Drive (Alignment and speed perfect)
> Using OpenCBM and CBMXfer GUI (CBMXfer defaults to OpenCBM's D64Copy.exe to
> copy files to disk).
> 
> 
> 
> My Commodore setup:
> 
> 64C with 2nd 1541 II Drive (Alignment and speed perfect). Epyx Fast load
> cartage. C64TPC Adaptor.
> 
> 
> 
> Note: I've tested the 64C with Doctor 64 and no errors were reported. Same
> with the Drives. I've also checked the alignment of the Drives comparing
> program results with a Factory disk, the 1541 Demo Disk and the results were
> identical.
> 
> 
> 
> I know other 1541 devices work great and all and so do the emulators, its
> just I'm having trouble understanding why my setup isn't the optimum way to
> play D64 files.
> 
> 
> 
> Please, any help, Advice or direction would be greatly appreciated.
> 
> 
> 
> 
> 
> 
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-
Pete Rittwage
http://rittwage.com



       Message was sent through the cbm-hackers mailing list
Received on 2009-10-22 14:00:04

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