Help to identify a file type? Gorf 2000 (PD).jag

[phoboz]

I have a file for Gorf 2000, but I don't know what type of file it is?

(the file seems to be widely available at many ROM sites on the internet)

 

The extension is .jag, but it's clearly not a ROM file, e.g. it does not have the ROM header (e.g. starting with F6:42)

 

When I open the file in the JiFFI tool, it identifies the file format as: "None detected - either BJL, ROM, or junk!"

I can also convert the file to ROM in the JiFFI tool, and it can be played in the project tempest emulator (for a few seconds),

but it won't start at all on the Jaguar using the GameDrive.

 

I know that there are some other files types for the Jaguar, for example "Jaguar Server" etc.

Is there some common place were I can find information about the headers for all the different file types for the Jaguar?

Or does someone else on this forum recognize what type of file this might be?

 

 

This is what the start of the file looks like in a hex editor:

 

How it looks in the JiFFI tool:

 

 

and crash in project tempest emulator.

 

 

Edited May 25, 2021 by phoboz

[phoboz]

I managed to play this game on the Jaguar using the Skunkboard by uploading it with the JiFFI tool.

I have no idea how/why it worked, because I had to select a flag "Upload homebrew as ROM",

but the file itself does not look like a ROM?

 

Does the JiFFI tool convert the file to a ROM before it uploads it?

Still the question remains, what type of file the game initially was?

 

Edited May 25, 2021 by phoboz

[phoboz]

[Rick Dangerous]

Most old school jag fans won't touch this game with a 10 foot pole because of the controversy with the license etc. 

 

I think at this point for me it's another one of those "who cares" scenarios.  Will Midway take legal action if the rom is shared to a few dozen Jag GD carts?  No.

 

I still have my replica CD copy, but will be looking to put this on my Jag GD as well. 

[Fadest]

Is it the BJL version that was included in BJL ROM ? If so, it is a BJL file.

[phoboz]

1 hour ago, Fadest said:

Is it the BJL version that was included in BJL ROM ? If so, it is a BJL file.

I am guessing it's a BJL file, but I really not sure.

(as it was hard to find any info about the structure of a BJL file)

 

This version doesn't seem to have any sound, and you have infinite lives.

Also if you already fired a shot, and fire again, the already fired shot will disappear.

 

6 hours ago, Rick Dangerous said:

I still have my replica CD copy, but will be looking to put this on my Jag GD as well. 

Please let me know if you get something working on the Jag GD. I could only make this work on the Skunkboard.

The patched file that I flashed to the Skunkboard won't start using the Jag GD.

[Machine]

46 minutes ago, phoboz said:

.....

Also if you already fired a shot, and fire again, the already fired shot will disappear.

.....

 

 

That is in the original version of the arcade game so I am guessing it is meant to be that way in the Jag version....

[+cubanismo]

Odd that it works with that button checked but not without. If you.rename it .bin does it work?

[phoboz]

16 hours ago, cubanismo said:

Odd that it works with that button checked but not without. If you.rename it .bin does it work?

No, I tried to rename it both to .bin, and to .cof. Neither of this makes it work.

[phoboz]

On 5/26/2021 at 6:53 PM, Rick Dangerous said:

I still have my replica CD copy, but will be looking to put this on my Jag GD as well.

Did you succeed to play the CD version of the game (with sound)?

 

It looks much more entertaining to play with sound, as the version I tried is completely silent.

[Atari Nut]

On 6/12/2021 at 1:47 PM, phoboz said:

Did you succeed to play the CD version of the game (with sound)?

 

It looks much more entertaining to play with sound, as the version I tried is completely silent.

I know this is an old thread but what size is the file you have?

[walter_J64bit]

This version of Gorf is more of a beta.

[JagChris]

On 5/26/2021 at 4:04 PM, phoboz said:

Also if you already fired a shot, and fire again, the already fired shot will disappear.

 

Yes as Machine said in Gorf only one shot can be in the air at a time. Old School.

[Machine]

(not Jag related) = The new GORF game on 2600 does an great job recreating the arcade feel. Well worth the price.

[+CyranoJ]

Rip the CD data track, rip the ATRI header off it, turn the binary into a ROM. Job done.

 

[edit]

There's probably an endian byte-swap in there somewhere.

[phoboz]

23 hours ago, Atari Nut said:

I know this is an old thread but what size is the file you have?

The orignal Gorf 2000 (PD).jag file is 67.6 KBytes, the jiffi converted .rom file is 1 MB.

[Atari Nut]

1 hour ago, phoboz said:

The orignal Gorf 2000 (PD).jag file is 67.6 KBytes, the jiffi converted .rom file is 1 MB.

That's what mine is.  Did you try it in BigPEmu?  I couldn't get it to work.

[phoboz]

4 hours ago, Atari Nut said:

That's what mine is.  Did you try it in BigPEmu?  I couldn't get it to work.

No, the original file doesn't work, but the file I converted to .rom (using the jiffi tool) works. It also works on the Skunkboard, but not on the Gamedrive.

[JagChris]

On 5/26/2021 at 9:53 AM, Rick Dangerous said:

Most old school jag fans won't touch this game with a 10 foot pole because of the controversy with the license etc. 

 

I think at this point for me it's another one of those "who cares" scenarios.  Will Midway take legal action if the rom is shared to a few dozen Jag GD carts?  No.

 

I still have my replica CD copy, but will be looking to put this on my Jag GD as well. 

There's no controversy with the licensing. It went to.the appropriate people for checking and licensing.