Ikari Warriors

micksimmonds

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Just picked up an Ikari Warriors, and monitors was dead so swapped it out with another one, anyway now can see the game load up and appears to have no issues with the rom check etc, but a couple of the sprites (the actual 2 players) are glitchy, guessing need to clean and reseat a rom?

but checked the power at the harness and its running at like 5.6v which seems high, but adjust it down and the sprites disappear :(

also its the original SNK board with some addon board between the actual Jamma? harness connector and the board, what pinout is this? Im guessing not JAMMA, ive got one wire and a diode? soldered to the side of it that seems flakey, anyone make a better adapter?

but on the plus side both of my rotary sticks work :)
 
The board is an adapter so it can be used in a Jamma cabinet, it's a common thing.
I think my Imari boards also wig out with the sprites if the +5 is too high so I would not be worried. Many games get crazy when the voltage is too much out of range
 
i concur with what's been said so far, i've had over a dozen ikari warriors go through my hands, and flickering sprites can be a direct result to low +5v line. is the psu adjustable? have it on 5v and then turn it up a little.
 
so on a related note, does Ikari 3 work in the same cabinet (without the SNK adaptor) and also Ikari 2 (Victory Road) as would be neat to have all 3 in the same cab, anyone done this? thanks
 
Hey Mick. Measure the voltage at some ICs on the PCBs. And consider checking/cleaning the inter-board POWER cables (seperate from the ribbon cables). If after you are done fiddling with the voltage, it's still not satifactory... I'd strongly suspect bad RAM.

I disassembled and commented some of the boot code when I was making my high-score save mod. The boot-up self RAM test is VERY incomplete. It only tests a portion of main CPU RAM... There's plenty of video RAM not tested... so it may be bad in spite of the "RAM OK" at boot.

Oh, and a number of years ago, I ended up replacing most of the RAM on my IW before I got it working w/o gfx glitches. Hamster may be able to test the RAM for you with his Fluke 9010A...
 
if you have a jamma cabinet (which is sounds like you do), yes ikari 2 and 3 will work when plugged in directly (without the adaptor). obviously you have to remove the rotary controlls and plug them into a new board. i'd like to find a way to have a switcher that works with the rotaries so you can play multiple games. I think someone was working on this. I haven't looked to see what circuitry would be required if any.

-brian

so on a related note, does Ikari 3 work in the same cabinet (without the SNK adaptor) and also Ikari 2 (Victory Road) as would be neat to have all 3 in the same cab, anyone done this? thanks
 
there is a jamma version of ikari warriors too with a different top board.

ikari 3 is rubbish though and is played on a horizontal screen setting, so not really suitable for all 3 of the series to be in the same cabinet.
 
I disassembled and commented some of the boot code when I was making my high-score save mod. The boot-up self RAM test is VERY incomplete. It only tests a portion of main CPU RAM... There's plenty of video RAM not tested... so it may be bad in spite of the "RAM OK" at boot.

I stand corrected. I just looked back at my notes... and I was mixed up a bit. It's the ROM that's not all checked (checksum) by the bootup code. It does a test (a fairly weak test) on the RAM from 0xd800 thru 0xffff. According to MAME, that's all of the shared RAM between the two game CPUs. There a little more RAM that the sound CPU uses, which isn't shared (and thus not tested) by the main CPU(s). [Not sure if the sound CPU tests it... I haven't looked at that code.]

There's a bit of a disconnect somewhere. My notes seems to count at least 14 2k x 8 RAMs on the boards, but the MAME driver's info doesn't seem to explain but like 6 of those 2k x 8... Not sure what gives.

EDIT: on 2nd thought, a couple of those RAMs may be a line buffer... but that still leaves more unexplained. Damn, I wish someone would turn up some Ikari schematics...
 
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there is a jamma version of ikari warriors too with a different top board.

ikari 3 is rubbish though and is played on a horizontal screen setting, so not really suitable for all 3 of the series to be in the same cabinet.

well that puts a stop to that idea, why the hell did they do that ?!?!?#$?#$#
 
well after spending a hour or so with Hamster on this, we got it so its playable, couple of control panel issues, but all in all its playable, the adapter board seems loose as once moved the cabinet back few issues came back, but there is hope :) and glitches are pretty much gone
 

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well after spending a hour or so with Hamster on this, we got it so its playable, couple of control panel issues, but all in all its playable, the adapter board seems loose as once moved the cabinet back few issues came back, but there is hope :) and glitches are pretty much gone

So what problems were found & fixed?
 
well the cab had 2 jamma harnesses in it, the original psu was outputting 5.6v and couldnt adjust, so removed other jamma harness, swapped out psu, cut a load of wires that did nothing, cut a wire from a diode that was on the adapter board? (maybe supplying power to card swipe coin door?) again removed that coin door and put on a proper one, fix couple of ground issues with pcb and control panel and was all good (apart from couple of CP issues with no going up or shooting, they are easy fixes that will do when pull CP apart to clean it) but need to look at redoing adapter board as its loose and can be flakey (again another contributor to glitches?) as moved cab back into spot and slight flicker is back, fiddle with adapter board and goes away, found that Bob Roberts sells one so think ill order that :)

now just to repaint and redo cab and get it ready for GW3
 
now just to repaint and redo cab and get it ready for GW3

Woohoo! If that happens to be a JAMMA version of Ikari, I have a high-score save & freeplay (and bugfix...) kit I created for my IW. Requires 2 swapping 27512 ROMs, and replacing a RAM with a 2K NVRAM.

Lemme know if you're interested. I can send the EPROM files and instructions to you or Hamster. And if you want, I can even modify the title screen to say "GAMEWARP 2013" ;)
 
no its the non-jamma version :(

Well maybe this is my excuse to get off my lazy ass and code the non-JAMMA version... if you guys don't mind being the testers for it. I'm 99% sure the RAM-to-NVRAM-swap is the same, I just need to deal with the different game code used in the non-JAMMA one.
 
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