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| | |-+  Wonder Boy Bootleg board #1 and #2		 0 Members and 2 Guests are viewing this topic. « previous next »
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Author Topic: Wonder Boy Bootleg board #1 and #2  (Read 3972 times)
Zabanitu
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« on: February 12, 2012, 10:20:28 PM »
this board comes with a 2nd big pcb replicating some custom ICs.
the background and audio were ok but the sprites were heavy flickering and near impossible to recognize.
after some socket replacing i found that a LS138 on the lower side of the sub board had a floating output, replacing it fixed the sprites issue.

i also used the just fixed top pcb to test another wonder boy bootleg board (wich had 2 sub boards and one missing AM25LS2519 chip) to confirm the bottom board works ok.

so i copied the AM25LS2519 little  implementation (2x LS173) from the working board and made a wirewrap pcb to fix the 2nd bootleg game.

Zab
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channelmaniac
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Few things are better than fixing an old game...


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« Reply #1 on: February 13, 2012, 05:59:29 AM »
Those pesky 25LS2519 chips are a beeeeyotch to find. I have about a 1/2 dozen or so of them and that's all I've EVER been able to find.
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proten
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« Reply #2 on: February 13, 2012, 03:05:27 PM »
Here is some at Arcade Components.com !!

http://www.arcadecomponents.com/catalog/item/2251652/8229260.htm
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One step at a time.
channelmaniac
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« Reply #3 on: February 14, 2012, 01:17:52 AM »
Quote from: proten on February 13, 2012, 03:05:27 PM
Here is some at Arcade Components.com !!

http://www.arcadecomponents.com/catalog/item/2251652/8229260.htm


Yup! That's me. Cheesy
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I have too many hobbies! Electronics, gunsmithing, Miatas, arcade games, metal detecting, etc...

http://www.arcadecomponents.com
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