Dumping and Emulation Issue

All questions regarding the dumping of media go here.
plaxamate
Posts: 15
Joined: Sat Aug 29, 2020 11:07 pm

Re: Dumping and Emulation Issue

Post by plaxamate »

Got 86Box to work. I had to convert the psi to td0. Once I did that, I created my PCJr machine properly and started it up. It seems to work perfectly. For those that haven't checked it out, it's pretty cool. I was used to the C64 version.
Jeff_HxC2001
Posts: 63
Joined: Thu May 12, 2011 10:56 pm

Re: Dumping and Emulation Issue

Post by Jeff_HxC2001 »

ScreenShotTrack39.jpg
ZrX wrote: Mon Feb 15, 2021 7:37 pm That's just because the sector header has been altered to tell you the sector is 1024 bytes while the actual sector itself is still just 512 bytes. HxC tries to interpret it according to the header information and makes it look like the next sector is inside it, which also causes the checksum to come out as bad.

Too much automation in a software isn't always a good thing.
But this is just how a normal floppy controller read this. This sector is bad from a CRC point of view. The protection routine expect to find the next sector header in the "bad" sector data. The graphical representation is right.
ZrX
Posts: 649
Joined: Tue Dec 06, 2011 9:09 pm

Re: Dumping and Emulation Issue

Post by ZrX »

Matter of perspective. How the disk is built vs how the controller sees the disk.
rcade
Posts: 124
Joined: Mon Nov 21, 2011 5:21 pm

Re: Dumping and Emulation Issue

Post by rcade »

plaxamate wrote: Tue Feb 16, 2021 12:51 am Very interesting! I know that there is a broken copy out there that works on DosBox, so I wasn't sure about mine.

According to this site (https://www.vogons.org/viewtopic.php?t=50664&start=40) the disk won't work at all on any CGA/EGA, etc. past the title (which is what happens on my dump), so maybe it's a good dump and I just have to wait for an emulator to come out since I can't write code. I'm curious, though, since my disk DOES have a notch in it (which I wasn't expecting). Anyone got a PCJr to check it? :-)
I do, but image is deleted now.
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Pete Rittwage
C64 Preservation Project
http://c64preservation.com
brightcaster
Posts: 379
Joined: Fri Nov 08, 2013 10:48 pm

Re: Dumping and Emulation Issue

Post by brightcaster »

Here we go:

https://davidkrause.de/GhostbusterPCjr.zip

I also deleted this file (as I do with all the dumps presented here after a short while), but I still had it in my second last backup....


David
plaxamate
Posts: 15
Joined: Sat Aug 29, 2020 11:07 pm

Re: Dumping and Emulation Issue

Post by plaxamate »

David beat me to it. I tend to remove the dumps from Dropbox after a time. Please let us know if it works on a real machine!
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