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Golden Axe Port - Dev log

GeorgeSpinner said:
Looks great!

Which EPROMs are you using C and V ROMs?
It looks like 27c160. It's hard to tell though.

What are you using for the P, M and S ROMs?

Thanks.
Click to expand...
27c160 as C & V
27c800 as P or double it and use 27c160
27c1001 as M1
and 27c1000 as S1

you can use 27c1001 also on S1 but you have to invert pin 2 and pin 24
 
XtraSmiley said:
Altered Beast!?!?!? The NeoGeo already has a ton of shitty games! :P

It has a soft spot in my heart as well, but man, it's not a good one!

Dynamite Dux would be interesting though.

I still think Fantasy Zone 2 from the S16c board would be the most interesting b/c of the expanded RAM situation.
Click to expand...

Fantasy Zone 2 port would be a dream!
That's a game I'd want in cart form for the NEO GEO
 
GeorgeSpinner said:
Looks great!

Which EPROMs are you using C and V ROMs?
It looks like 27c160. It's hard to tell though.

What are you using for the P, M and S ROMs?

Thanks.
Click to expand...

C, V, P - mx29f1615 (M27C160)
M1 - 27C010
S1 -27C100

I changed V, P, M roms to program with M27c160.

V - split 32mb -> 2 16mb roms
P - 8mb -> 16mb
M1 - 512 -> 1mb
 
GeorgeSpinner said:
I don't think you can change characters when you continue in Golden Axe.

If you can, I will be surprised that I never noticed this in hundreds of sessions.
Click to expand...
If you're in two player mode, you can wait for the timer to run out and start a fresh game with a different character.
 
AGCRetrogaming said:
Hey @h0ffman excellent port again and thanks a lot and whole team. I just saved on the Neo Geo CD.

2 things happen with me and I think is my console because I never updated the unibios.

- during continue, not able to select different characters.
- player 2 not playable just start is working. None the other buttons or direction is working.

Graphic and sound perfect
Just a little lagging when you finish the final boss and the queen and the king are being pulling down.

The rest perfectly
Thanks
Click to expand...
Sorry if this is a double reply.

On changing characters, you can only do this if you are in 2 player mode and the continue timer runs out. This is how the arcade works.

As for 2 player mode, this was tested extensively on real hardware so... I dunno.
 
sega19 said:
Hoffman, Have you experimented with Generative AI (like Anthropic Claude 3.5 Sonnet) tools to aid in the process?
Click to expand...
Nope and I won't even entertain the idea. The fun part of this process is digging through the original game code and data and unearthing it's structure. It's like digital archeology.
 
So yeah.. anyway, kinda ignored the thread over the last couple weeks as I've been sick but I've bounced back now.

Thanks for all the lovely comments, was fun sharing the development journey here and it's great seeing people enjoy the result of the hard work.

There will be a final version release of this and Shinobi but not for a good few months. I've got another Neo Geo non-game related project to dive into.


And lastly.. for everyone who keeps suggesting games for me to port... let me point you to my FAQ..


FAQ

Q: Will you please consider porting [insert game here]
A: Like all good DJs, I don't take requests
 
h0ffman said:
Nope and I won't even entertain the idea. The fun part of this process is digging through the original game code and data and unearthing it's structure. It's like digital archeology.
Click to expand...
The archeology part was what kept me hooked on the Midway stuff as well. There was lots of stuff disabled, debug, many comments too.

Like this bit where they disabled the backboard shattering per the NBA demands:

Code: 
;Fix!!!
;    LOCKUP
    move    @bbshatter,a0        ;Already happened
    jrnz    #noshat2
;    jruc    #noshat2        ;THE NBA SUCKS!

There's much more bit i can't recall it all from the top of my head right now lol.
This thing here has a lot of .doc files with developer comments, and it's a real treasure trove:

https://github.com/historicalsource/nbajam-complete

/derail
 
I'm planning to make a Golden Axe cart, I konw that I can use 27c010 for S1 instead of 27c1000, but now I got some 27c1000 and would like to use it in S1 but my programmer doesn't flash 27c1000, it's a TL866CS.
If I swap the pins in 27C1000 could I flash it as a 27C010?
Should I disable check ID option or there is an ic that I could select to flash it
 
I made an adapter for a similar job from a pair of stacked sockets but I can't remember if I just used this for reading:

IMG_3116.jpg


Assuming the write voltages are similar/the same it should work, and yes, you will need to disable the ID check.
 
GarouSP said:
I'm planning to make a Golden Axe cart, I konw that I can use 27c010 for S1 instead of 27c1000, but now I got some 27c1000 and would like to use it in S1 but my programmer doesn't flash 27c1000, it's a TL866CS.
If I swap the pins in 27C1000 could I flash it as a 27C010?
Should I disable check ID option or there is an ic that I could select to flash it
Click to expand...
yes swap pin, disable check id and its work fine
 
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