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Naibo
Reged: 10/17/07
Posts: 136
Loc: Tianjin China
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Re: DU: Saturday morning bits (updated)
01/08/18 09:42 AM


Thanks for your information.
Just did some further studying: the 0xff only happened in the front 2MBytes of the two 4MB rom data files, while the 2nd half data look good, but the graphics content are the same as the 1st halves(repeated?). However, some necessary in-game graphics can not be found, for example, song titles.

Looks like for these two 16-bit 4-MByte rom chips, their highest address pins(A20), and word/~byte mode pin are reversed?


中国-天津







Entire thread
Subject Posted by Posted on
* DU: Saturday morning bits (updated) SmitdoggAdministrator 12/30/17 07:48 PM
. * Re: DU: Saturday morning bits (updated) Naibo  01/07/18 07:00 AM
. * Re: DU: Saturday morning bits (updated) SmitdoggAdministrator  01/07/18 07:10 AM
. * Re: DU: Saturday morning bits (updated) Haze  01/07/18 01:40 PM
. * Re: DU: Saturday morning bits (updated) Naibo  01/08/18 09:42 AM
. * Re: DU: Saturday morning bits (updated) SmitdoggAdministrator  01/08/18 06:53 PM
. * Re: DU: Saturday morning bits (updated) gregf  12/30/17 11:43 PM
. * Re: DU: Saturday morning bits (updated) SmitdoggAdministrator  12/30/17 11:51 PM
. * Re: DU: Saturday morning bits gregf  12/31/17 12:19 AM
. * Re: DU: Saturday morning bits (updated) Haze  12/31/17 12:18 AM
. * Re: DU: Saturday morning bits (updated) SmitdoggAdministrator  12/31/17 12:19 AM
. * Re: DU: Saturday morning bits (updated) Haze  12/31/17 12:22 AM
. * Re: DU: Saturday morning bits (updated) Haze  12/31/17 12:30 AM
. * Re: DU: Saturday morning bits (updated) Naibo  12/30/17 11:21 PM
. * Re: DU: Saturday morning bits (updated) SmitdoggAdministrator  12/30/17 11:23 PM
. * Re: DU: Saturday morning bits SmitdoggAdministrator  12/30/17 10:02 PM
. * Re: DU: Saturday morning bits agard  12/30/17 10:01 PM
. * Re: DU: Saturday morning bits Nate  01/07/18 07:34 PM

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