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Next round of PowerPak beta mappers fixes controller problems, mapper 79, mmc1

Nov 3, 2010 at 6:29:33 PM
bunnyboy (81)
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(Funktastic B) < Master Higgins >
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B1

To reduce the number of incompatible games, this mapper set adds open bus reading to 4016 and 4017 on CNROM and MMC3.  That will probably mean nothing to most people    The fix makes the controller in games like Paperboy work.  All 6 games that have control issues on the incompatibility list should now work.  Hopefully it didn't break anything else!

It also adds iNES 2.0 WRAM size calculations to MMC1.  Don't think anything currently uses this, but will in the future.

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B2

Fixes mapper 79 -  now Krazy Kreatures, Deathbots, Mermaids, and Venice Beach Volleyball should all work correctly.

Fixes weird MMC1 problem with RMW instructions - now Bill & Ted, Hillsfar, Rocket Ranger, and Sesame Street 123 should work.

No changes to the SNES side yet.





Edited: 11/10/2010 at 05:37 PM by bunnyboy

Nov 3, 2010 at 6:31:37 PM
NESHomebrew (21)
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(Brad Bateman - Strange Brew Games) < King Solomon >
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There were some concerns about extra sound not working with the last set of beta mappers. Did anything change with those?

Nov 3, 2010 at 6:38:12 PM
bunnyboy (81)
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(Funktastic B) < Master Higgins >
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The mappers with extra sound are from loopy and I haven't touched them. Who is having problems?

Nov 3, 2010 at 7:22:49 PM
NESHomebrew (21)
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(Brad Bateman - Strange Brew Games) < King Solomon >
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http://nesdev.com/bbs/viewtopic.p...

Nov 3, 2010 at 7:31:34 PM
bunnyboy (81)
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Dunno what he was doing wrong, but as the last post there says v1.34 = loopy mappers.

Nov 3, 2010 at 7:47:36 PM
UncleTusk (234)
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(Wilfred Brimley) < King Solomon >
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Woot woot! Time to deliver papers!

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Nov 3, 2010 at 7:56:59 PM
Enslaved (106)
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(Edd Showalter) < Master Higgins >
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Always good to have a grand classic like Paper Boy for your PowerPak. Good job Bunny!

-------------------------
Check out this really awesome WTB thread that I found, I heard this guy wants games at the cheapest rate possible!  Now on the look out for Unlicensed NES!

http://www.nintendoage.com/forum/...



Nov 4, 2010 at 12:47:41 AM
Herbalist (139)
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(Bill Brasky) < King Solomon >
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*raises hand*

What if you have the "controller issues games" already patched with the fix on nesdev.

Will these function normally or do I have to revert to un-modded roms of those games?

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Nov 4, 2010 at 12:56:56 AM
TN (73)
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(TN TN) < El Ripper >
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many thanks for continuing to upgrade the PowerPak bunnyboy!

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Nov 4, 2010 at 9:18:28 AM
bunnyboy (81)
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(Funktastic B) < Master Higgins >
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Originally posted by: Herbalist
What if you have the "controller issues games" already patched with the fix on nesdev. 

Will these function normally or do I have to revert to un-modded roms of those games?

They will still work fine.  The patch makes the games use the correct controller reading like properly written games.


Nov 4, 2010 at 10:00:43 AM
buttheadrulesagain (20)
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(Jorge Juarez) < King Solomon >
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Hi there. I want to point out that some powerpaks seem to have problems with Crystalis (graphic glitches). Mine doesn't, but a couple of people reported problems using the same ROM as me.

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Nov 4, 2010 at 10:15:14 AM
bunnyboy (81)
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(Funktastic B) < Master Higgins >
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And that almost certainly won't change with these mappers.

Nov 5, 2010 at 3:08:31 AM
WaverBoy (1)

(Jeff Nelson) < Eggplant Wizard >
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Any idea of what the Crystalis issue might be?

Nov 5, 2010 at 8:42:39 AM
albailey (55)
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(Al Bailey) < Lolo Lord >
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Originally posted by: WaverBoy

Any idea of what the Crystalis issue might be?


Have a person try SMB3.  If you get graphics glitches maybe its an old powerpak without the resister mod.


Bunny, I'm curious why CNROM would have had any issues.   I know it has bus conflicts, but I always thought that only applied to the PRG section $8000-$FFFF.  Why would $4016-$4017 be affected?

Al

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My Gameboy collection  97% complete.          My N64 collection   88% complete



 My Gamecube collection  99% complete        My NES collection   97% complete


Nov 5, 2010 at 9:50:54 AM
bunnyboy (81)
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(Funktastic B) < Master Higgins >
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Originally posted by: WaverBoy

Any idea of what the Crystalis issue might be?

Nope haven't looked at it, lots more higher priority stuff.



Originally posted by: albailey

Bunny, I'm curious why CNROM would have had any issues.   I know it has bus conflicts, but I always thought that only applied to the PRG section $8000-$FFFF.  Why would $4016-$4017 be affected?

It isn't bus conflicts, its an open bus problem.  When the games do a controller read (LDA $4016) they aren't masking the higher bits (AND #$01).  The NES drives the lower 5 bits, but leaves the upper 3 bits open.  When the bus is open the capacitance in the wires keeps the last value that was on the bus, which is the $40 from the LDA $4016.  So the games are expecting to read exactly $40 or $41.  The problem is the PowerPak has pull up resistors on the bus, making the upper 3 bits 1, so the games get $E0 or $E1 instead.  The fix just drives the upper bits on those reads.

Nov 5, 2010 at 1:37:12 PM
neidl32 (4)
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am i a total fool, or does Mario's Adventure still not work on the power pak? i've tried he rom with all the updates and cant get it to play correctly. anyone know anything about this?

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Nov 5, 2010 at 2:42:22 PM
NewUser123456789 (226)

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Mario's Adventure as far as I've found does not work on real NES hardware. Coinheaven makes a repro of it, but I believe he uses a different ROM. Joe, please correct me if I am wrong.

Nov 6, 2010 at 12:19:23 AM
NESHomebrew (21)
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(Brad Bateman - Strange Brew Games) < King Solomon >
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Originally posted by: Paul

Mario's Adventure as far as I've found does not work on real NES hardware. Coinheaven makes a repro of it, but I believe he uses a different ROM. Joe, please correct me if I am wrong.

He uses a patched rom, and a faster chip.

Nov 6, 2010 at 12:24:41 AM
Arjak (12)

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Originally posted by: Paul

Mario's Adventure as far as I've found does not work on real NES hardware. Coinheaven makes a repro of it, but I believe he uses a different ROM. Joe, please correct me if I am wrong.


Huh, I didn't know this. Why doesn't it work right on a real NES?

Nov 6, 2010 at 4:17:05 AM
casperdj777 (0)

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hey bunnyboy,any chance of this with upgrade going to be sold again on the site? i need to save up so let me know. also the nes-GB cart will it play gba or gbc?

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Nov 6, 2010 at 5:52:47 AM
deksar (0)

(Deksar Dekstersman) < Cherub >
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Could we make this thread a `sticky topic`? It'd be easier to follow the mapper changes.

Nov 6, 2010 at 7:56:45 AM
Zzap (47)
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(James ) < King Solomon >
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Keep an eye here if you don't want to keep track of announcements:

http://www.retrousb.com/downloads...

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Chunkout for iPhone, iPad and iTouch out now!
Chunkout Games: FaceBook | Web

Nov 6, 2010 at 1:44:13 PM
marvelus10 (46)

( . ) Boobies ( . ) < King Solomon >
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I'm still holding my breath for mapper 90....

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Nov 6, 2010 at 3:02:48 PM
bunnyboy (81)
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(Funktastic B) < Master Higgins >
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Not my fault when you pass out

Nov 6, 2010 at 4:40:23 PM
deksar (0)

(Deksar Dekstersman) < Cherub >
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Originally posted by: marvelus10

I'm still holding my breath for mapper 90....


Same here. It has lots of nice games; Super Mario World, Mortal Kombat, Tekken 2..etc


Edited: 11/06/2010 at 05:22 PM by deksar