Susoft 5a clone?

A place that you can discuss reproduction of classic titles or "licensed-for-reproduction" homebrew for personal use.

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Fisher
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Re: Susoft 5a clone?

Post by Fisher » Sat Nov 28, 2015 11:10 am

As I have promised some time ago, here's a video of this game's opening:
https://www.youtube.com/watch?v=JAafMRzZFfs
I'm still fighting this crap capture card, since I'm getting no sound at all.
But this should be no problem, I guess...
I can try to do some game play videos, if needed.

I just have some little questions:
Is there a way to eliminate the slowdown on this game? Preferably without writing another ROM with a modified PRG.
What options I would have to make a repro on this board?
I was thinking originally in doing a Batman ROTJ, since I like this game and, as many old games, it's ridiculously expensive here!! But maybe I could do some other games, like Contra J, or even Crisis Force. Stay with this game as is is a good option too, but I really would like to eliminate the slowdown, if possible.

Joe
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Re: Susoft 5a clone?

Post by Joe » Sat Nov 28, 2015 12:15 pm

Fisher wrote:Is there a way to eliminate the slowdown on this game? Preferably without writing another ROM with a modified PRG.
The mapper hack added by the pirates adds a lot of cycles to the processing time. The only way to fix that is by modifying the ROM.
Fisher wrote:What options I would have to make a repro on this board?
Remove the IRQ circuit and you've got a fairly standard VRC2b board. Most games using a VRC2 should be pretty easy to get on this board, although some VRC2 variants will need a couple things rewired.
Fisher wrote:I was thinking originally in doing a Batman ROTJ, since I like this game and, as many old games, it's ridiculously expensive here!!
This game does not use a VRC2, so it won't work unless you add a mapper hack like the pirates did.
Fisher wrote:But maybe I could do some other games, like Contra J, or even Crisis Force.
Contra will require a small modification to the board (or possibly the ROM?) in order to work, since it relies on the microwire interface.

Crisis Force uses a VRC4, which means it won't work if it relies on any VRC4-specific features. Additionally, it needs PRG-RAM, so you'll need to add components to handle that (and prevent conflicts with the VRC2).

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Fisher
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Re: Susoft 5a clone?

Post by Fisher » Sat Nov 28, 2015 1:46 pm

As I have thought.
Looks like the best idea is to stick with the game as-is.

I've seem a Batman ROTJ hack, but it's VRC4.
Looks like the best thing to do.

Maybe I mess up a little and put a socket on PRG ROM to try some hacks... who knows?
Up to now, the ROMs I have got/used seemed almost undestructible!!
But I really know it's not true!! I think I've been very lucky to have not killed any good cartridge yet.
Although I'm very cautious, I don't know if this lucky will last very long, so... better stay as-is.

Many thanks for everybody!!
Let me know if some more videos would be needed.
I'm really learning alot here!! Many thanks for sharing your knowledge!!

Edit: Just out of curiosity, I tested some Gamegenie codes with this game.
To my surprise, they worked as they should!
I tried the US version codes. Interesting, huh?

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Fisher
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Re: Susoft 5a clone?

Post by Fisher » Sat May 14, 2016 6:44 am

Sorry about my absence, I've been really busy lately...
As promised some time ago, I'm posting some gameplay videos:

Stage 3-1 and 3-2 https://youtu.be/mtGUVVPaSug
Stage 4 https://youtu.be/H8md_xgnp-s

I have other weird pirate game to dissassemble, dump, scan and ask for help to try to fix a glitch.
But this will have to wait a little more.

Many thanks for the help!!
See you guys later!!

onimush
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Re: Susoft 5a clone?

Post by onimush » Mon May 14, 2018 1:37 am

Some evolution of subj bootleg cart. PAL16 instead of 3xTTL.
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3BnRdKXxEvc.jpg

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Fisher
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Re: Susoft 5a clone?

Post by Fisher » Mon May 14, 2018 2:35 am

That's cool!
Does it suffer from slowdowns?
Mine unfortunately does, but I think there's a version with this bug corrected.
I'm not sure if they're compatible.

onimush
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Re: Susoft 5a clone?

Post by onimush » Mon May 14, 2018 4:19 am

Fisher wrote:That's cool!
Does it suffer from slowdowns?
Mine unfortunately does, but I think there's a version with this bug corrected.
I'm not sure if they're compatible.
I haven't this cart yet but seller warned me about slowdowns.

zxbdragon
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Re: Susoft 5a clone?

Post by zxbdragon » Tue May 07, 2019 7:56 pm

onimush wrote:Some evolution of subj bootleg cart. PAL16 instead of 3xTTL.
I found this cart,The data on the cart are exactly the same as Fisher's cart.

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