Dragon's Lair Fans - Arcade Lifestyle
General Chat => Technical Area => Topic started by: Ramakers on August 30, 2015, 06:41:53 PM
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I discovered an old Taito game. Looking at it in the box it looked to me as a Space Invaders, but once I got it out, it got me confused. It hasn't got the row of pots and the are some strange switches on the top board. Five large single switches, and two types dip switches.
After disassembling it to find some components that could give away its identity, I got nothing. There doesn't seem to be a processor or any RAM. The two labeled components are ROMs I think and they are labeled TZ01 & TZ02.But the labels cover the type so I can't be sure about the type so I can't dump the roms. I don't want to remove those labels as I want to keep things original. Although the two ROMs are not the same type, yet they seem factory issued to me but I'm not an expert on this subject.
The only link I get from TZ ROMs by Taito refer to Missile-X but there should be 3 ROMs?
A first picture:
(https://farm6.staticflickr.com/5725/20997182272_d7ae2022b4_z.jpg)
Look at some more detailed pictures in my flickr account:
https://flic.kr/s/aHskjh2zo1 (https://flic.kr/s/aHskjh2zo1)
Can somebody point me in the right direction?
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You found rom but no processor ???
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You found rom but no processor ???
I told you I got confused. I took another look at the boards to find the processor. Now I discovered a chip on the top board with TZ03 stamped on it, so is it a missile-x after all?
But where is the possessor?
All chips got painted black???, but most of them are still readable. The biggest chip is only a 24pin and this is labled HD74154P so no possessor yet.
I uploaded some pictures of the middle and lower board if somebody wants to look at them.
Maybe I'll have to hook it up step by step and look where it takes me. As the pinout of missile-x is nowhere to be found.
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Damn! I just sold an SI cocktail yesterday afternoon.
I'll ask the buyer if he could take some pics so you can compare.
I'll post here if he gets back to me.
You probably saw these schematics already, but just in case : http://www.brentradio.com/SpaceInvaders.htm (http://www.brentradio.com/SpaceInvaders.htm)
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Monaco GP has plenty of ROMs and no processor.....
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i didn't know that taito built discrete logic games until 79...(on some of the ttls, the production date can be seen)
so i searched for taito ttl found this one:
http://www.citylan.it/wiki/index.php/Zun_Zun_Block_(TTL)
i just checked the lot of switches on the upper pcb :)
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i didn't know that taito built discrete logic games until 79...(on some of the ttls, the production date can be seen)
so i searched for taito ttl found this one:
http://www.citylan.it/wiki/index.php/Zun_Zun_Block_(TTL)
i just checked the lot of switches on the upper pcb :)
I think this is the one, little disappointing :(
but I'll try to get this running anyway. Someone will like this game and every game has a right to get a second life.
At this point I don't find much info on the web about this game.
At KLOV they say it's a color crt game but from what I see in the the pictures on the net its a B&W game.
I can't find a pinout anywhere.
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I think klov is wrong in the way they describe color CRT.
it is black and white with color overlay, like space invaders and breakout.
so its in some way a color game, but its a black and white monitor
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On the http://www.crazykong.com/dips/ZunZunBlock.txt (http://www.crazykong.com/dips/ZunZunBlock.txt) website I found the dip settings! thanks a lot.
But still no pinout.
Is it possible they made this game to run on a color crt, you can display b&w on a color crt after all. Because they already made a lot of color games by then, or did they make it b&w to clear out there old b&w tube stock?
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With Taito - quite Often the Upright version of the game would use a 19" colour CRT, but the cocktail version would use a b/w monitor. Thats why Space Invaders has 'color' versions of SI and SI part 2. b/w crt's were more plentiful and cheaper and cocktail were aimed at a slightly different market to the uprights, so that business model made sense for the time period where parts/demand made it viable. The engineers just made sure the game could output both video formats so one pcb worked in both cabinets without any or minimal differences in production.
The pcb you have looks a lot like Zun Zun Block, i had one once along time ago.. should be all TTL, but has some interesting circuits to display text. I definitely pulled one out of a table that was black and white with overlays, its possible the pcb had RGB colour output, but i dont remember finding that when i hooked it up on my bench, or i may have made the adapter with RGB insted of just b/w output.
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This is the color version I'd say.....
http://youtu.be/k1PNdUgVP_U
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Maby it's a game from the unemulated taito games :P
http://unmamed.mameworld.info/non_taito.html
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Monaco GP has plenty of ROMs and no processor.....
Interesting, so how does that work? ...... I will wait for the workshop @eurocade ;D
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There's a MONACO GP workshop at Eurocade? :o
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Leo is kidding....
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I checked the pictures from the PCB inside my SI cocktail table and it's a... Pit & Run ;D
Sorry I thought I could help. :oops:
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I checked the pictures from the PCB inside my SI cocktail table and it's a... Pit & Run ;D
Sorry I thought I could help. :oops:
No problem, any help is welcome. But I already ruled out SI as it has no processor. Nice pictures of PCBs are always helpful for future identification.
I'll keep posting my findings about the game. Maybe one day it can help others.
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I wired up the 5v and gnd to both the top and bottom board. Then I checked for out coming signals on the bottom board. On the screen of my scope I found only one pin with a signal. I was expecting more? Then I took a closer look at the signal and it appeared to me it could be composite video.
Did they use composite video on arcade boards? A quick search on the net taught me they did. Mostly on B&W cocktail tables so this should be it.
Now my test rig isn't capable of playing composite video :( so I hooked up a small video device in MacGyver style. And there was an image :D.
The ball stops moving as soon as the image is steady, but with the crappy connection the picture goes on and of having the ball move jerky.
I also discovered the big switches on top don't respond. You should be able to put the game in play or test mode, but it seems it's only in test mode (large padel). Also the flip screen does nothing? So there is definitely some work to be done on this board.
But this solves the mystery, it is a zunzun block board. Now I have to find a way to display the composite video on a crt so I can try to get this game up and running like it did in 1979.