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General Chat => Technical Area => Topic started by: Belike on May 20, 2015, 07:58:43 AM

Title: Zacc The Invaders rom hack
Post by: Belike on May 20, 2015, 07:58:43 AM

I have some non-working The Invaders pcbs, that I want to modify to the "3 rom" version.
Is there anybody who did this before and can help me to explain what to do step by step.
I already have modified pcbs, but they are not identical, one has 2516 the other 2716 eproms and on top of that, they are in different positions on the 2 pcbs.
Is it just burning some eproms and place some sockets or more complicated?
The 2 modidied pcbs:
(https://lh3.googleusercontent.com/-ZGiJc-OpcCA/VVZAsJ5IjMI/AAAAAAAAJOM/paj9HcpY_YM/s720/The%252520Invaders%252520pcbs%252520001.jpg)

The 2516 and 2716 eproms in different locations
(https://lh3.googleusercontent.com/-gYlvTDzzRs0/VVZAs8qczBI/AAAAAAAAJOY/vS4bcFvXEB4/s512/The%252520Invaders%252520pcbs%252520002.jpg)
And the whole lot
(https://lh3.googleusercontent.com/-s7n4sHphEw8/VVZAtAPpn2I/AAAAAAAAJOc/_XQPGSjdNxU/s720/The%252520Invaders%252520pcbs%252520004.jpg)

Title: Re: Zacc The Invaders rom hack
Post by: ajhippel on May 22, 2015, 10:46:47 AM

do you have the schematics of the pcb?

Title: Re: Zacc The Invaders rom hack
Post by: Belike on May 22, 2015, 04:37:11 PM

Yeah, uploaded here:
https://picasaweb.google.com/109707166457005716502/ZaccariaTheInvadersSchematics?authkey=Gv1sRgCNvZ-MmZ4uLLKg

Title: Re: Zacc The Invaders rom hack
Post by: ajhippel on May 29, 2015, 10:55:20 AM

sorry bela,

but there are no schematics from the cpu-board :(