Search found 16 matches

by jerky
Tue Nov 29, 2022 11:51 am
Forum: General
Topic: This is why the MAME emulation of Kangaroo is inaccurate...
Replies: 12
Views: 12629

Re: This is why the MAME emulation of Kangaroo is inaccurate...

I thought I would check back in and see if anyone wants to investigate and resolve this long standing issue with Kangaroo's emulation. To help explain the problem, this video shows how the Gorilla is supposed to behave on an arcade machine with the security chip working properly up through Level 4: ...
by jerky
Wed Jan 27, 2021 2:31 pm
Forum: General
Topic: Must see recordings
Replies: 211
Views: 247850

Re: Must see recordings

Improvement: http://replay.marpirc.net/inp/4/f/b/jky_irobot_825730_wolf183.zip Glad you have been enjoying my I,Robot playbacks + thanks for the recognition :) Atari master David Theurer put a great deal of effort into this overlooked title and I am glad I could share some of it's complex level des...
by jerky
Tue Nov 27, 2018 2:10 pm
Forum: Playbackability
Topic: jerky - cchasm1 - 507,250
Replies: 3
Views: 8733

Re: jerky - cchasm1 - 507,250

Thanks for the heads up.

Recorded using exact same batch file that my other score for this title used (623k). Still plays back fine on my end.

Anyone else having issues?
by jerky
Wed Jan 17, 2018 11:57 am
Forum: Playbackability
Topic: mhavocrv
Replies: 2
Views: 11426

Re: mhavocrv

Sorry for any confusion. You need the latest version 1.8 roms from Jess Askey's site which are different than what you find elsewhere on the nets for mhavocrv: http://gamearchive.askey.org/Video_Games/Manufacturers/Atari/major_havoc.html The trick is that those are just the changes to turn regular M...
by jerky
Sat Apr 01, 2017 5:20 pm
Forum: Regulation Play
Topic: mhavoc and it's clones
Replies: 61
Views: 34160

Re: mhavoc and it's clones

I seem to have picked up the Major Havoc torch here many years after this thread, but I wanted to chime in on a few points. You get way more points using the Aqua warp to get to Level 13 than playing 1-12+. I think you end up with a hundred thousand points less or more playing the early levels so mo...
by jerky
Wed Dec 14, 2016 12:57 pm
Forum: General
Topic: Time to clean up the Robotron scores?
Replies: 5
Views: 7720

Re: Time to clean up the Robotron scores?

Here is another Difficulty 3 submission to the Difficulty 10 Robotron board (second one since yesterday) :
http://replay.marpirc.net/inp/5/f/f/rrr ... win122.zip
by jerky
Mon Oct 10, 2016 9:44 pm
Forum: General
Topic: Time to clean up the Robotron scores?
Replies: 5
Views: 7720

Re: Time to clean up the Robotron scores?

Exactly. Discussion (link in the special rules box) at the origin of the special rule is from 2005, SLA's input is from 2002. I'm quoting this from TJT : "After brief postal exchange with DBH and BBH, we decided that: Robotron.zip should be played at diff=10, that should make the game slightly...
by jerky
Sat Oct 08, 2016 1:57 pm
Forum: General
Topic: Time to clean up the Robotron scores?
Replies: 5
Views: 7720

Time to clean up the Robotron scores?

Howdy. Could someone please clean up the Robotron scoreboard when they get a chance? (Solid Blue romset). I finally started scoring over a million points on Difficulty 10 but I am not sure where I stand because some of the scores here don't seem to follow the special rules. http://replay.marpirc.net...
by jerky
Wed Jan 21, 2015 7:30 pm
Forum: General
Topic: This is why the MAME emulation of Kangaroo is inaccurate...
Replies: 12
Views: 12629

Re: This is why the MAME emulation of Kangaroo is inaccurate

I don't know if anybody has attempted to see if Kangeroo also used the same MCU code, although it does indicate that this type of chip is a valid decapping target, or at least was for the guy who did it, I'm less sure about the current people doing it for us. One of the current guys doing decaps fo...
by jerky
Sat Dec 27, 2014 7:19 pm
Forum: General
Topic: This is why the MAME emulation of Kangaroo is inaccurate...
Replies: 12
Views: 12629

Re: This is why the MAME emulation of Kangaroo is inaccurate

Perhaps a bug report ought to be filed at MAMETesters... The MB8841 MCU is emulated by MAME, but without the code dumped (which is likely not to be easily possible), you just have to simulate what it does. I am going to contact them and share my findings. Its hard to simulate a custom randomizer co...
by jerky
Sat Dec 27, 2014 7:16 pm
Forum: General
Topic: This is why the MAME emulation of Kangaroo is inaccurate...
Replies: 12
Views: 12629

The code...

I started with information from the MAME driver code I found here: https://github.com/OpenEmu/UME-Core/blob/master/mame/src/mame/drivers/kangaroo.c Sun Electronics hardware: TVG-1-CPU-B 2 x Z80 AY-3-9810 8-way DipSwitch Service Switch Program ROMS (both Main & Sound) MB8841 (at least for Kangaro...
by jerky
Sat Dec 27, 2014 5:39 pm
Forum: General
Topic: This is why the MAME emulation of Kangaroo is inaccurate...
Replies: 12
Views: 12629

This is why the MAME emulation of Kangaroo is inaccurate...

I wanted to share this post I made on Twin Galaxies regarding the obvious differences between how Kangaroo plays on a legit arcade machine versus the current MAME romsets (TG takes days to put your posts up so I don't have a link for ya yet but you can find it at the end of the "Undisputed Cham...
by jerky
Wed Apr 16, 2014 3:56 am
Forum: General
Topic: zlk's 2025 bounties
Replies: 40
Views: 85373

Re: zlk's 2014 bounties

Third time's the charm! Much improved Toobin' 1 credit finish (rev 3): (3) Tues 4/15/14 Wolfmame .152 (cmdline) finish @ Nightmare River Class 6-5 /// 10,578,390 points (T-Shirt @ Class 3 and x5 bonus end Class 3>6) (7 patches left over) (3) http://replay.marpirc.net/inp/b/5/6/jky_toobin_10578390_wo...
by jerky
Mon Apr 14, 2014 2:57 pm
Forum: General
Topic: zlk's 2025 bounties
Replies: 40
Views: 85373

Re: zlk's 2014 bounties

Thank you for the bounty inspiration! I haven't done much gaming outside of Zelda, Super Mario and Rayman for almost 20 years (not a big fan of fighters, 1st person shooters, nor Hollywood production style gaming). But, no matter how many years go by, I am always drawn back to the arcade classics. L...
by jerky
Mon Apr 14, 2014 1:29 am
Forum: General
Topic: zlk's 2025 bounties
Replies: 40
Views: 85373

Re: zlk's 2014 bounties

It's possible to "edit" your previous score to a lower score, then submit a higher one. Sometimes it's necessary to edit more than one "previous score", well, just press "(edit)" in the side of your current score and you will understand what it means. Thanks! That did ...