[Techtoolslist] Fluke on Mario Bros.

[John Robertson]

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 :-#(#

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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