[Techtoolslist] Fluke on Mario Bros.

[John Robertson]

On 2018/04/19 8:39 PM, Jess Askey wrote:
> Are there any dips or jumpers that might be triggering the code to 
> reset them each boot?
>
>
If there are any jumpers they do not appear in the documents that I have 
found or at least any jumpers aren't documented - something to check I 
guess.

All 8 DIP switches are accounted for in the manual.

John :-#(#
>
> Sent from my Verizon, Samsung Galaxy smartphone
>
>
> -------- Original message --------
> From: John Robertson <jrr at flippers.com>
> Date: 4/19/18 9:36 PM (GMT-07:00)
> To: techtoolslist at flippers.com
> Subject: Re: [Techtoolslist] Fluke on Mario Bros.
>
> On 2018/04/17 9:24 AM, John Robertson wrote:
> > Hi David,
> >
> > I too am having a problem with a Mario Bros game. Can read and write
> > to the CMOS RAM (passes all RAM tests), but it won't save settings
> > when turned off then back on. Self tests are also good.
> >
> > Annoying!
> >
> > Anyone else run into that? I'm thinking of ripping out the CMOS
> > battery circuit and replacing with an NVRAM and direct connection to
> > the /CS instead of the transistor & /Reset circuit that is there now.
> > If it works I will let folks here know.
> >
> > And I still get the CTL ERR message below when using the BUS TEST even
> > after turning off the Error flags.
> >
> > John :-#(#
>
> Further to this, removing all the CMOS battery circuitry and /CS and
> simply installing a NVRAM and jumping the /CS and Vcc did not change the
> results. It still won't store the High Score or Free Play settings. It
> adjusts them on screen, but cycle the power and Free Play and/or High
> Scores go away.
>
> Was there a software version for Mario Bros which did not allow for
> battery backup memory? That is able all i can think of as the Fluke does
> a proper read/write to the memory location just fine (6800h to 6FFFh).
> Fortunately the customer doesn't care so I am not going to sink any more
> time into this problem - for now.
>
> However if someone has a bright idea I am more than willing to listen as
> it annoys me. It may have something to do with the Z80 DMA controller, I
> know nothing about them...
>
> Thanks,
>
> John :-#(#
>
> >
> > On 2011/11/16 11:29 PM, David Shoemaker wrote:
> >> Looking at the manual for the Z80QT pod and the schematic I think I am
> >> getting an expected result.
> >>
> >>
> >> I hooked up the pod and hit BUS to run the bus test.  I immediately
> >> get back
> >> CTL ERR showing 00000010 this is the HALT line. Looking at the
> >> schematic it
> >> appears HALT and INT are both tied together and pulled high.  So the
> >> fluke
> >> can't exercise that line.
> >>
> >>
> >> Any way to ignore that error and verify the rest of the bus test?
> >>
> >>
> >> Oh and according the manual maximum clock frequency is 8.0 mhz. Does
> >> that
> >> mean this pod support Z80A/B/C ?
> >>
> >>
> >>
> >>
> >> From: David Shoemaker [mailto:davids at oz.net]
> >> Sent: Wednesday, November 16, 2011 10:38 PM
> >> To: 'Technical Tools Mail List'
> >> Subject: Fluke on Mario Bros.
> >>
> >>
> >> Anyone know if you can use either the base z80 pod or the z80qt pod
> >> on Mario
> >> bros?
> >>
> >>
> >> I know it uses the Z80A but I don't know what the pod is rated at.
> >>
> >>
> >> Thanks,
> >>
> >> David
> >>
> >> _______________________________________________
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> >>
> >>
> >
>
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