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Extended Basic Plus - Sebasoft 1987

Cartridge PCB

1 reply to this topic

#1 kl99 OFFLINE  

kl99

    Dragonstomper

  • 676 posts
  • Location:Vienna, Austria

Posted Sun Nov 5, 2017 1:58 PM

I got a wonderful wedding gift from Ermanno from Italy - Astharot on atariage. It is an Extended Basic Plus I didn't know existed. It is from Sebasoft from 1987.

There was no single reference to it in the whole The Cyc (cadd99.com).

 

Now after honeymoons I finally had some time to examine it, at least by opening it.

 

Attached File  DSC08312.JPG   702KB   4 downloads

 

Attached File  DSC08306.JPG   777.39KB   3 downloads

 

Attached File  DSC08273.JPG   777.79KB   3 downloads

 

Attached File  DSC08260.JPG   733.03KB   3 downloads

Attached File  DSC08259.JPG   743.94KB   3 downloads

Attached File  DSC08276.JPG   552.99KB   3 downloads

 

Is this some unique PCB layout?

It seems it shows ROM and 2 GROM to the TI, but fakes the GROMS to the TI using standard Eproms and some logic.

The board uses TMS27128 for some reason, which means 16k per chip if I am right.

I made lots more pictures of the PCB parts if anyone is interested.



#2 ramidavis ONLINE  

ramidavis

    Chopper Commander

  • 101 posts

Posted Mon Nov 6, 2017 5:04 PM

Considering taking a dump of it?







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