Problem with Dragonfire

[Charlie_]

I've posted about this over at Lemon64 and here in the wanted section, but figured I'd ask here too.

 

I'm trying to play Dragonfire by Imagic found here:

http://csdb.dk/search/?seinsel=all&search=dragonfire&Go.x=0&Go.y=0&Go=Go

 

When the game starts I can see that the graphic for the Archer's arrow is corrupt.

 

I've created floppy disks using my ZoomFloopy, and I also have loaded the .d64 images from SD, UIEC.

 

I was wondering if others could try these images to see if they see the same thing.

 

My C64 is a USA bread bin model, It has Jiffy DOS, and CBM DOS selectable with a switch.

In every other game I play the computer seems to work just fine. I've not noticed any glitches playing many, many games. I've even tried a different power supply. I ran C64 Doctor ram test and it passes after 150+ passes.

 

What could be wrong with my C64?

 

 

 

 

[carlsson]

I'm not sure which version is which, but one of the Hokuto Force +2DGMF cracks is linked to by Gamebase 64. That version works without graphics glitches with WinVICE 3.1 in both NTSC and PAL mode.

http://gamebase64.com/game.php?id=2324&d=18&h=0

 

You might want to download that version again and try.

[Charlie_]

I'm not sure which version is which, but one of the Hokuto Force +2DGMF cracks is linked to by Gamebase 64. That version works without graphics glitches with WinVICE 3.1 in both NTSC and PAL mode.

http://gamebase64.com/game.php?id=2324&d=18&h=0

 

You might want to download that version again and try.

 

Thanks. I tried the image at the site and had the same results.

 

I think something is wrong with my c64, but I'd like to hear someone tried it on real hardware, and it worked, before I start searching for a replacement C64.

[carlsson]

Peculiar if it would be a RAM issue, as you would have far more corrupt graphics than a single sprite.

 

The arrow is sprite #5 counting from #0. It defaults to sprite pointer $2F, which equals memory address $0BC0. It is restored from $D660 every time one loses a life. There is also a copy at $5000 which might be the original origin but not reused once the game is started.

 

$0BC0 is part of the RAM used by BASIC, while $D660 is RAM that is behind both the character ROM and the VIC-II chip. Normally that memory is not accessible from BASIC, and one needs to change the I/O registers to read from it. It should give us some clues, if you have a hidden RAM fault not exposed by most other games, though the RAM test program should expose it eventually.