Re: Sumcheck Error with Star Wars mathbox proms

So, are these PROM images corrupt?

http://www.ionpool.net/arcade/atari/roms.html

tm

Andreas Kraemer 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 :-#)#
>>>
>>> --
>>> John's Jukes Ltd. 2343 Main St., Vancouver, BC, Canada V5T 3C9
>>> Call (604)872-5757 or Fax 872-2010 (Pinballs, Jukes, VideoGames)
>>> www.flippers.com
>>> "Old pinballers never die, they just flip out"
>>>
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>
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Received on Thu Oct 2 16:48:18 2008