It is currently Tue Apr 24, 2018 2:02 am

View unanswered posts | View active topics


Board index » NES / Famicom » NES Hardware and Flash Equipment

All times are UTC - 7 hours





Post new topic Reply to topic  Page 1 of 2
  [ 30 posts ]  Go to page 1, 2  Next
  Print view Previous topic | Next topic 
Author Message
Zepper
 Post subject: Gradius II dump?
PostPosted: Wed Dec 14, 2016 12:53 pm 
Offline
Formerly Fx3
User avatar

Joined: Fri Nov 12, 2004 4:59 pm
Posts: 3097
Location: Brazil
Board pictures. A pirate cart with cheating.


Attachments:
IMG_20161214_174819748.jpg
IMG_20161214_174819748.jpg [ 346.85 KiB | Viewed 2583 times ]
IMG_20161214_174807078.jpg
IMG_20161214_174807078.jpg [ 333.91 KiB | Viewed 2583 times ]
Top
 Profile  
 
lidnariq
 Post subject: Re: Gradius II dump?
PostPosted: Wed Dec 14, 2016 12:54 pm 
Offline

Joined: Sun Apr 13, 2008 11:12 am
Posts: 7020
Location: Seattle
It's a VRC2 with a pirate IRQ.

... Wait, that looks really familiar.

'cuz it is...
Top
 Profile  
 
Zepper
 Post subject: Re: Gradius II dump?
PostPosted: Wed Dec 14, 2016 3:45 pm 
Offline
Formerly Fx3
User avatar

Joined: Fri Nov 12, 2004 4:59 pm
Posts: 3097
Location: Brazil
Fine. How could I dump it with kazzo? Is possible to do it?
Top
 Profile  
 
lidnariq
 Post subject: Re: Gradius II dump?
PostPosted: Wed Dec 14, 2016 3:49 pm 
Offline

Joined: Sun Apr 13, 2008 11:12 am
Posts: 7020
Location: Seattle
Dump it as though it were the ordinary licensed VRC4 Gradius 2. CHR is identical and PRG will only differ in the last 2 KiB.

Sorry, I should have actually looked at my traces from when Fisher asked; it's actually VRC2b layout.

However, it won't work in any emulator. There's no mapper allocated to this board.
Top
 Profile  
 
zxbdragon
 Post subject: Re: Gradius II dump?
PostPosted: Wed Dec 14, 2016 7:16 pm 
Offline

Joined: Mon Dec 12, 2011 8:15 pm
Posts: 400
lidnariq wrote:
Dump it as though it were the ordinary licensed VRC4 Gradius 2. CHR is identical and PRG will only differ in the last 2 KiB.

Sorry, I should have actually looked at my traces from when Fisher asked; it's actually VRC2b layout.

However, it won't work in any emulator. There's no mapper allocated to this board.


dumper and read eeprom,The data is different.
dumper:data is 2k patch to PRG, ROM size :128+128
eeprom:ROM size :2k patch+128+128

all G2 pirate working my build nestopia plus! r314
Top
 Profile  
 
Fisher
 Post subject: Re: Gradius II dump?
PostPosted: Sun Dec 25, 2016 6:06 am 
Offline
User avatar

Joined: Sat Jul 04, 2015 9:58 am
Posts: 679
Location: -29.794229 -55.795374
First of all, MERRY CHRISTMAS!!!

I have a pirate "Kid Dracula" (Akumajou Special: Boku Dracula-kun) that runs on similar hardware.
Is ROM dumping / PAL dumping / scanning worth the effort?
I mean, can this really help documenting and further understanding the hardware?

Does your cartridge have the same bug as mine?
Top
 Profile  
 
zxbdragon
 Post subject: Re: Gradius II dump?
PostPosted: Sun Dec 25, 2016 8:21 am 
Offline

Joined: Mon Dec 12, 2011 8:15 pm
Posts: 400
Fisher wrote:
First of all, MERRY CHRISTMAS!!!

I have a pirate "Kid Dracula" (Akumajou Special: Boku Dracula-kun) that runs on similar hardware.
Is ROM dumping / PAL dumping / scanning worth the effort?
I mean, can this really help documenting and further understanding the hardware?

Does your cartridge have the same bug as mine?


Akumajou Special: Boku Dracula-kun..... I DUMPED,but IRQ not emu

you can dumped 16L8AN?
Top
 Profile  
 
Fisher
 Post subject: Re: Gradius II dump?
PostPosted: Sun Dec 25, 2016 9:18 am 
Offline
User avatar

Joined: Sat Jul 04, 2015 9:58 am
Posts: 679
Location: -29.794229 -55.795374
With Lidnariq's help, I have read the PAL chip as an EPROM.
Later he figured out the logic on the IC based on the data.
I see no reason this could not be made again with this other PAL.

Should I? I think I will!!
Top
 Profile  
 
lidnariq
 Post subject: Re: Gradius II dump?
PostPosted: Sun Dec 25, 2016 11:15 am 
Offline

Joined: Sun Apr 13, 2008 11:12 am
Posts: 7020
Location: Seattle
If you want to build a generic harness for dumping PAL16L8, connect pins 13-18 to your ROM reader data lines, but also put ≈4.7kΩ resistors from your ROM reader address lines to those six pins.
This will let the address line drive the pin if the PAL is configured to have the pin be an input, but will let the data line be read if it's an output.
Top
 Profile  
 
Fisher
 Post subject: Re: Gradius II dump?
PostPosted: Sun Dec 25, 2016 3:19 pm 
Offline
User avatar

Joined: Sat Jul 04, 2015 9:58 am
Posts: 679
Location: -29.794229 -55.795374
Do you mean like this?
Top
 Profile  
 
zxbdragon
 Post subject: Re: Gradius II dump?
PostPosted: Sun Dec 25, 2016 3:52 pm 
Offline

Joined: Mon Dec 12, 2011 8:15 pm
Posts: 400
Akumajou Special: Boku Dracula-kun


Attachments:
QQ图片20161220215809.jpg
QQ图片20161220215809.jpg [ 2.1 MiB | Viewed 2358 times ]
Top
 Profile  
 
Zepper
 Post subject: Re: Gradius II dump?
PostPosted: Sun Dec 25, 2016 3:54 pm 
Offline
Formerly Fx3
User avatar

Joined: Fri Nov 12, 2004 4:59 pm
Posts: 3097
Location: Brazil
Back to the subject... :| :|

So, it's NOT possible to dump it with Kazzo because of this extra chip/data?
Top
 Profile  
 
zxbdragon
 Post subject: Re: Gradius II dump?
PostPosted: Sun Dec 25, 2016 4:02 pm 
Offline

Joined: Mon Dec 12, 2011 8:15 pm
Posts: 400
Attachment:
IMG_20161226_070019.jpg
IMG_20161226_070019.jpg [ 485.91 KiB | Viewed 2353 times ]


Top
 Profile  
 
zxbdragon
 Post subject: Re: Gradius II dump?
PostPosted: Sun Dec 25, 2016 4:03 pm 
Offline

Joined: Mon Dec 12, 2011 8:15 pm
Posts: 400
lidnariq wrote:
If you want to build a generic harness for dumping PAL16L8, connect pins 13-18 to your ROM reader data lines, but also put ≈4.7kΩ resistors from your ROM reader address lines to those six pins.
This will let the address line drive the pin if the PAL is configured to have the pin be an input, but will let the data line be read if it's an output.

this cart 16l8an+ax580c ,VRC4 +IRQ?
Top
 Profile  
 
Joe
 Post subject: Re: Gradius II dump?
PostPosted: Sun Dec 25, 2016 4:30 pm 
Offline

Joined: Mon Apr 01, 2013 11:17 pm
Posts: 437
Zepper wrote:
So, it's NOT possible to dump it with Kazzo because of this extra chip/data?

It is possible. Use VRC2b.
Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  Page 1 of 2
  [ 30 posts ]  Go to page 1, 2  Next

Board index » NES / Famicom » NES Hardware and Flash Equipment

All times are UTC - 7 hours


Who is online

Users browsing this forum: Google Adsense [Bot] and 6 guests

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB® Forum Software © phpBB Group