Re: Sumcheck Error with Star Wars mathbox proms

Hey Cool! Thanks, I will give these a try later today. :)

Matt

On 25 Sep 2008 14:20 GMT, "Andreas Kraemer" <andi_kraemer@t-online.de>
wrote:
> With some delay :D here are the mathbox proms from Starwars (read from
the
> original and working chips, saved to disk, loaded from disk,
> burned/verified and tested ok in the pcb) Regards, Andreas
>
>
http://www.andysarcade.de/data/coinop/videogames/vectorgames/starwars/starwars_mb_proms.zip
>
>
> "Andreas Kraemer" <andi_kraemer@t-online.de> schrieb:
>> Just by chance I discovered the same two days ago when trying to load
the
>> images
>> from MAME and I think the contents from ionpool had the same issue...
>>
>> Luckily the problem on my SW wasn't any of the mathbox PROMs. So I read
>> them on
>> my Data I/O 29B - Unipak 2B :-) Then saved them as a file and loaded
them
>> one back
>> onto the programmer without a checksum error. Additionally I burned the
>> -110 PROM
>> newly (Harris 7643, cross to 82S137) and it worked like a charm. So I
>> expect the files
>> to be ok.
>>
>> I can only place the verified files on my site later today (if no one
>> else is quicker).
>>
>> Andreas
>>
>>
>> "John Robertson" <pinball@telus.net> schrieb:
>> > Matt Rossiter wrote:
>> > >
>> > > I'm trying to load the four Star Wars Mathbox proms into my Data I/O

>> > > 29B - Unipak 2B programmer. I keep getting a sumcheck error. I
>> > > don't seem to have that problem with loading other proms, for
example
>> > >
>> > > from the Tempest Mathbox.
>> > >
>> > > Has anyone else had this issue?
>> > >
>> > > Matt
>> > >
>> > Are you trying to read them or write to one? If you are getting this
>> > error on a read on just one PROM then that PROM is unstable and
>> > probably
>> > needs to be replaced...
>> >
>> > If you are reading from a file, and you are not using Absolute Binary,

>> > then the file is likely corrupted
>> >
>> > John :-#)#
>> >
>> >
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Received on Thu Sep 25 11:27:52 2008