Sega I/O Rev. A Vs Rev. B
Posted: Thu Oct 26, 2006 11:14 am
Ok,
Sega JAMMA I/O
Rev A, Rev B, what's the difference????
John
Sega JAMMA I/O
Rev A, Rev B, what's the difference????
John
Page 1 of 1
Posted: Thu Oct 26, 2006 12:23 pm
Version A is the JVS 1 found in Naomi cabs, Version B is the Jamma 1.
Posted: Mon Nov 13, 2006 11:48 am
Nope,
Both JAMMA I/O's, one marked Rev A on the PCB and EPROM, and the other marked Rev B.
Any Ideas??
Both JAMMA I/O's, one marked Rev A on the PCB and EPROM, and the other marked Rev B.
Any Ideas??
Posted: Mon Nov 13, 2006 1:02 pm
Then I'm stumped :smt011
Posted: Mon Nov 13, 2006 2:36 pm
I'll take some piccys tonight.
Posted: Mon Nov 13, 2006 6:36 pm
OK,
Rev A.
Rev B.
Any Help???
Rev A.
Rev B.
Any Help???
Posted: Mon Nov 13, 2006 7:15 pm
interesting thing...
maybe the rev.a is the sega io who has problem with gg xx, etc...
maybe the rev.a is the sega io who has problem with gg xx, etc...
Posted: Mon Nov 13, 2006 7:37 pm
I've just noticed 2 physical differences after looking at the pictures I posted.
The Rev A board has AUTO-10 printed on it (just below the EPROM)
The 2nd difference is JP1 (next to the Cap - Again under the EPROM)
On Rev A, the jumper is set to A, and on Rev B, it's set to B.
The Rev A board has AUTO-10 printed on it (just below the EPROM)
The 2nd difference is JP1 (next to the Cap - Again under the EPROM)
On Rev A, the jumper is set to A, and on Rev B, it's set to B.
Posted: Mon Nov 13, 2006 11:56 pm
The revision B has been updated to automatically detect whether the power is being supplied by the jamma edge or the JST connector. I think you had to plan and choose with rev. A or you might blow something. I think there are a couple of fixes as well. I think one of the fixes has to do with how coins were registered.