Buggy Dreadnaught Factor

[Janzl]

I'll second that

[GroovyBee]

Can you take a look into DF when you are done with Rocketeer and your other projects? As a PAL user you would benefit too.

 

Sure, I can take a look some time.

[fabulous_Muller]

I think a cart that works on a 60Hz PAL system will not work on a 50Hz PAL system either. In my mind, its a timing problem or "race condition" that is the root of the problem (caused by the drop from 60Hz to 50Hz) and not the TV standard.

 

Maybe , but it would be interesting to hack the roms and see what is the difference. As I nver prog for INTV I don't know if there are specific timing instructions that should be used for PAL,NTSC or PAL-M. I don't think so because I don't remember or heard about local programmers hired to translate the game according to country TV standards. That would be an interesting finding. The similarities between PAL and PAL-M are very close , discarding the network frequency :

 

PAL M 525 lines, chroma signs 3,575611 MHz, H-freq 15.750 Hz , v-freq 60 Hz.

PAL N 625 lines, chroma signs 3,582056 MHz, H-Freq 15.625 Hz , V-Freq 50 Hz.

 

I'm starting to like this post....

[Janzl]

By the way , I sent a msg to mit pic newsgroup with a pic of my cartidge (the rom chip only) that I'm attaching now. Could you pls do the same and sent yours? It's just unscrew the cart and take a photo or scan it. Just to see what rom they used compared to our here. Rgds...

 

I checked and the rom in my cart is exactly the same as the one on your photo.

[HunterZero]

Found this ROM patch from Joe Zbiciak (INTVNut), so if you patch the ROM, you should be able to at least run it on a CC3:

 

 

Ok, the following .CFG file seems to make Dreadnaught Factor work for me on my hacked copy of jzIntv. (I took a stab at PAL timings that I know aren't 100% right, but what the hey, eh?)

[mapping]
$0000 - $1FFF = $5000 ; map first 8k to $5000 - $6FFF

[memattr]
$D000 - $D0FF = ROM 16

[macro]
@p 5cb5 734a
@p d000 02b8
@p d001 d009
@p d002 0240
@p d003 0100
@p d004 0040
@p d005 0240
@p d006 0101
@p d007 0220
@p d008 72c6
@p d009 02b8
@p d00a 5ca9
@p d00b 0240
@p d00c 0100
@p d00d 0040
@p d00e 0240
@p d00f 0101
@p d010 0220
@p d011 bffd


If you use this CFG file with jzIntv's "rom2bin" utility, you'll get a .ROM file that will run

on PAL. You can use "bin2rom" to get back a pure .BIN file with the patch applied.


Tada,

--Joe