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Macross PCB, Different Version's?
Falken Hawke:
I have a family trip coming up so won't be free 'til next week. I was thinking about using that tiny cabinet waiting for parts to try this :D
Haze:
--- Quote from: PL1 on March 28, 2023, 12:17:19 am ---
--- Quote from: Falken Hawke on March 27, 2023, 10:18:07 pm ---the pics of his board in his project thread match pics of the board elsewhere.
--- End quote ---
For those who don't want to scroll through the 10 pages of Yotsuya's build thread, here's the post with PCB pics.
http://forum.arcadecontrols.com/index.php/topic,137636.msg1423842.html#msg1423842
Can't tell from those pics if there are any ROM labels or PCB markings on Yotsuya's board that indicate a version number or release date.
When you first go into service mode (DIP SW1#8 to up), the center of the screen shows "11th Jun. 1992" (cropped pic below) for a second before proceeding to the monitor adjustment pattern.
- I'm guessing that this might be the revision/release date for the version in MAME.
- Do both of your PCBs show the same date?
Scott
--- End quote ---
You can't trust the date shown on the NMK games, we've seen multiple cases of completely different builds with the same date, and even different games with the same date. Either they forgot to update it, or it has some other meaning like the engine date, or project start date, rather than the build date.
Likewise NMK don't seem to do anything to differentiate versions with labels.
The only real way to know is the dump them.
PL1:
--- Quote from: Haze on March 28, 2023, 06:09:36 am ---You can't trust the date shown on the NMK games, we've seen multiple cases of completely different builds with the same date, and even different games with the same date. Either they forgot to update it, or it has some other meaning like the engine date, or project start date, rather than the build date.
Likewise NMK don't seem to do anything to differentiate versions with labels.
The only real way to know is the dump them.
--- End quote ---
If Yotsuya is willing to dump some ROMs from his PCB, which ROMs are most likely to show if there is a different variant?
- a03 looks promising. (main CPU)
- a08, a09, and a10 might have something relevant. (proms)
- a01, a02, a04, a05, a06 and a07 don't look very promising for the difference noted. (audio CPU, oki sound chips, tiles, and sprites)
--- Quote ---921a03 0524288 maincpu
921a02 0065536 audiocpu
921a01 0131072 fgtile
921a04 2097152 bgtile
921a07 2097152 sprites
921a05 0524288 oki1
921a06 0524288 oki2
921a08 0000256 proms
921a09 0000256 proms
921a10 0000032 proms
--- End quote ---
Scott
Haze:
Assuming it isn't a prototype, then it's only really likely that the maincpu ROM will differ, with a very small chance of the audiocpu ROM differing
For games of this period the GFX/Sample/PROMs were usually finalized before release (and are often mask ROMs)
yotsuya:
--- Quote from: PL1 on March 28, 2023, 03:00:52 pm ---
If Yotsuya is willing to dump some ROMs from his PCB…
--- End quote ---
I’ll get right on that….
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