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Osso1
Reged: 10/17/04
Posts: 232
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Re: Pepper2?
06/18/21 09:55 PM


The pepper2 set recently got a supposedly newer set of sound ROMs. With them it fails the self test.
I took a quick glance and I believe the recently added rev 2 sound ROMs are bad dumps. If compared to the old supposedly rev 1 ROMs they have the following changes.

5a: 1 byte change at 58d. Changes a LDA (a9) to a NOP (89). By changing this back the melody is restored but the game still fails the self test

6a: 2 bytes changed: 1f to 0f at 5ca, 2f to 0f at 22c

So 3 bytes changed total which cause the self test to fail and the first one also causes the melody to go missing.


Formerly (un)known as hanamichi on the mameworld.info message boards.







Entire thread
Subject Posted by Posted on
* Pepper2? Divemaster 06/18/21 08:13 PM
. * Re: Pepper2? ICEknight  06/18/21 08:55 PM
. * Re: Pepper2? Osso1  06/18/21 09:55 PM
. * Re: Pepper2? Haze  06/20/21 12:20 AM
. * Re: Pepper2? Vas Crabb  06/20/21 07:26 AM

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