RE: Succeeding at Battlezone with TQM.

Wooops, it is on spies, nevermind!

http://www.spies.com/arcade/conversion/BZoneNVRAM.update

Isn't Spies a wonderful place?

> -----Original Message-----
> From: Whittam, Simon [CRK:ASTE:EXCH]
> Sent: Friday, August 06, 1999 9:16 AM
> To: 'vectorlist@lists.cc.utexas.edu'
> Subject: RE: Succeeding at Battlezone with TQM.
>
> There's an update too for the HighScore mod.
> I think I received this by Email awhile ago .....
> maybe this should be on spies as well???
>
> SPW
>
>
> > I recently acquired an upright BattleZone and was wondering if you had
> made
> >any updates to the BattleZone high score memory conversion before I start
> on
> >it.
>
> Go nice and easy on your board and remember to make it so it can simply
> be removed.
>
> I did post an upgrade that got around the problems with test mode, I
> suspect you may have the version of the modification without the upgrade.
>
> Good luck, let me know how things go.
>
> -----------------------------------------------
> > KNOWN PROBLEMS
> > --------------
> >
> > The main problem with this patch is that I haven't had a look at the
> test mode
> > code yet, and because the data in ROM 409 has been changed the
> Battlezone
> > test mode spots this and complains. This will not effect normal
> operation
> > but if you put the ROM into test mode you will have problems.
> >
> > I may just be a case of juggling the checksums for the ROM so they match
> > the original ones, or it may be more complicated. Also the test mode
> > might mess with our score locations (while it is testing the RAM).
> > I'll be looking into this problem and will post a new patch that will
> > pass test mode when I've figured it out (or someone has beaten me to
> it).
> >
> > Until then simply don't enter testmode. If you really need to check
> things
> > out then put the original ROM (and SRAM) back in first.
>
> Anyway here is a version of the patch that will remember the top 3
> scores, pass test mode and not corrupt your scores during test mode.
>
> 7800 <---- Starting address for ROM 036-409
> 7FFF <---- End address for ROM 036-409
>
> 7b58 { <- location of 1st part of patch
> A2 3C A9 00 9D 00 03 E8 D0 FA A0 0A AD 00 08 29 01
> F0 02 A0 07 A2 1B A9 16 9D 1E 03 9D 1F 03 9D 20 03
> A9 05 9D 00 03 A9 00 9D 02 03 9D 01 03 CA CA CA 88
> D0 E2 20 1F 53 4C 00 50 7D
> }
>
> 7AE6 { <- location of 2nd part of patch
> EA EA EA
> }
>
> 7C71 { <- location of 3rd part of patch
> 03
> }
>
> Here are the details:
>
> This version permanently preserves the top 3 high scores, and
> initailizes the others to "5000 AAA" (unless the right coin
> switch is held down during powerup/reset, when it will set all
> 10 entries to "5000 AAA").
>
> All the bytes in a each Battlezone ROM need to XOR to 0xFF for the ROM
> to pass test mode (This is what the 0x7D does at the end of the 1st
> section above).
>
> I have prevented the code from checking page 3 (addresses
> 0x300-0x3FF) during test mode because this scribbles over
> the high score locations. But all the checks for the other
> areas of RAM are still in there.
>
> Regards, John.
>
> * John Keay ! TMS320C80 design *
> * work: keay@tiuk.ti.com ! Texas Instruments Ltd. *
> * home: john@keay.demon.co.uk ! Northampton, U.K. *
> * Disclaimer: All opinions expressed herein are personal. etc etc *
>
>
>
>
>
>
> -----Original Message-----
> From: Franklin Bowen [SMTP:fbowen@balt.checkfree.com]
> Sent: Friday, August 06, 1999 9:00 AM
> To: vectorlist@lists.cc.utexas.edu
> Subject: Re: Succeeding at Battlezone with TQM.
>
>
>
> Finally found it:
>
> http://www.spies.com/arcade/conversion/BZoneNVRAM
>
>
Received on Fri Aug 6 08:28:01 1999