Re: Sega Space Ship pinout (Space Wars Clone)

Hi Fabrice,

re the RAM Chips, I believe that 94322 or 94L322 will work instead of the 2101 or 9101.
They have the same pinout and are rated usually 35-45 ns as they are used as video rams.
I have used them at many places instead of the 2101/9101.
Let me know, I still have a couple here in Germany, if you don't want to order them
from the US eg arcadechips.com.

Great work and documentation!

Is it allowed to share out pics and info on my website for this rare machine, lmk.

Best Regards,
Andreas
www.andysarcade.de

"Fabrice GIRARDOT" <f4brice@gmail.com> schrieb:
>
> Hi all.
>
> I finished to create the SEGA Space Ship pinout file.
>
> I know it's usually a bad idea to attach a file to
> a mail sent to a mailing-list.
> But doing a copy-paste here would not make the e-mail
> smaller in size and would also perhaps break lines.
>
> There are 1 input and 1 output that are unknown to me :
> input A8 pin 8 (EXTERNAL_HIGH)
> output F2 pin 12 (O7)
>
> I'm still working in repairing my PCB.
> I already changed N2 and T2 who were bad for sure.
> Now, I think at least 1 memory chip is bad since
> I have strange output.
> Both pictures are RAM at L14, pin 16 :
> http://img1.uplood.fr/free/leol_broche_16_1us.png
> http://img1.uplood.fr/free/s05q_broche_16_500ns.png
> It is not a DSO hallucination (also tested at faster speed).
> When I exchange 2 memory chips, I do NOT have the same
> signals.
>
> I'm gonna buy replacement chips.
> I only found 400 ns chips, and SEGA's chips are 200 ns.
> Can anybody tell me if 400 ns memory chips would be
> fast enough for the CCPU ?
>
> Also I took some pictures of the SEGA Space Ship cabinet
> control panel. Pictures are posted here:
> http://www.gamoover.net/Forums/index.php?topic=20677.msg299603#msg299603
>
> If somebody wants more pictures, please let me know.
> I'll send some good pictures to klov, since there's none for this game.
>
>
> Regards.
>
> --
> Fabrice
>

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Received on Wed Jan 27 02:11:12 2010