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I Found Some Interesting EPROMS...


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#1 DavidMil OFFLINE  

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Posted Tue Jan 16, 2018 1:30 AM

I found three interesting EPROM chips today.  One says:

 

1200XL

SW16

U12  V1.0

LOW

 

And the two really interesting ones say:

 

EPYX  P/N 614R-A

1983

EPYX  P/N 614R-B

1983

 

All three are 2764 chips.  The edges are frayed and slightly lifted, but the windows are still

totally covered.  I can't wait to put them in my Pro Burner and see if there is anything on them!

 

Anyone have any clues?

DavidMil



#2 Rybags OFFLINE  

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Posted Tue Jan 16, 2018 2:04 AM

1200XL has 2 OS sockets 8K each which should explain the first - the OS sockets are labelled U12 and U13 on the board.

 

Epyx ones, probably a game.

If you dump them can you do individual per chip.  It should be easy enough to ID what they are.  If you append the pairs together you should be able to use as cart and OS images in emulators.


Edited by Rybags, Tue Jan 16, 2018 2:05 AM.


#3 kheller2 OFFLINE  

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Posted Tue Jan 16, 2018 8:02 AM

It’s interesting the 1200xl says sw16 on it. It is probably the normal rev 10 but a dump would be nice and a picture of the sticker.

#4 DrVenkman ONLINE  

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Posted Tue Jan 16, 2018 8:08 AM

It’s interesting the 1200xl says sw16 on it. It is probably the normal rev 10 but a dump would be nice and a picture of the sticker.

 

No flash though, just in case. ;) 



#5 Almerian OFFLINE  

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Posted Tue Jan 16, 2018 4:00 PM

Epyx game : Is it Gateway to Apshai? 614R seems to reference that.



#6 _The Doctor__ ONLINE  

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Posted Tue Jan 16, 2018 8:06 PM

David,

 

While your name says Mil.....

 

is that short for Milner? Possibly related to Ron Milner?



#7 DavidMil OFFLINE  

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Posted Wed Jan 17, 2018 12:28 AM

Epyx game : Is it Gateway to Apshai? 614R seems to reference that.

 

I sure hope it does.  That was one of my favorite games.  But can you explain how does 614R reference that?

 

Thanks,

David



#8 DavidMil OFFLINE  

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Posted Wed Jan 17, 2018 12:31 AM

David,

 

While your name says Mil.....

 

is that short for Milner? Possibly related to Ron Milner?

 

HA!  If I was, I'm sure he would have gotten tired of my questions and told me to go away a LONG time ago!

 

David



#9 DavidMil OFFLINE  

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Posted Wed Jan 17, 2018 12:39 AM

It’s interesting the 1200xl says sw16 on it. It is probably the normal rev 10 but a dump would be nice and a picture of the sticker.

 

I have no idea what SW16 could mean, and I was hoping someone could enlighten me (please).

 

David



#10 DrVenkman ONLINE  

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Posted Wed Jan 17, 2018 8:52 AM

 
I have no idea what SW16 could mean, and I was hoping someone could enlighten me (please).
 
David


Potentially refers to “Sweet 16”, the project code name for what became the 1200XL.

#11 Almerian OFFLINE  

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Posted Wed Jan 17, 2018 12:08 PM

 

 

I sure hope it does.  That was one of my favorite games.  But can you explain how does 614R reference that?

 

Thanks,

David

 

Look here at the model #:

https://atariage.com...SoftwareID=3872



#12 DavidMil OFFLINE  

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Posted Wed Jan 17, 2018 2:50 PM

Here is a picture of the three EPROM's.  Do you have any idea of how many pictures I had to take without a flash to get this picture?

A lot!

 

DavidMil

Attached Thumbnails

  • EPROM's.JPG


#13 _The Doctor__ ONLINE  

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Posted Wed Jan 17, 2018 3:00 PM

well the fact it's labeled lo usually implies there should also be a HI, as that's the norm unless someone labeled lo out of habbit, in any event a dump of the roms and a look at what in em will shed light on a number of things...


Edited by _The Doctor__, Wed Jan 17, 2018 3:02 PM.


#14 toddtmw OFFLINE  

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Posted Wed Jan 17, 2018 4:22 PM

Do you have those sitting on a wool or cotton blanket? Is that a good idea?



#15 _The Doctor__ ONLINE  

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Posted Wed Jan 17, 2018 9:47 PM

ugh, that's how you kill the chips right there folks



#16 DavidMil OFFLINE  

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Posted Wed Jan 17, 2018 10:05 PM

Well Almerian nailed identifying the EPYX chips.  Here is a capture of the A chip... 

 

David

 

 

Attached Thumbnails

  • Gateway To Apshai.JPG


#17 Kyle22 OFFLINE  

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Posted Wed Jan 17, 2018 10:07 PM

Please guys, remember that a camera flash won't hurt a COVERED EPROM. Even an uncovered one would suffer very minimal (if any) damage.

 

That video of a camera flash (if it is to be believed) only caused transient glitches. It did not destroy data. the ST came right back every time.

 

Laws of Physics here!

 

Don't be paranoid.



#18 DavidMil OFFLINE  

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Posted Wed Jan 17, 2018 10:16 PM

Do you have those sitting on a wool or cotton blanket? Is that a good idea?

 

Normally I'd laugh at anyone suggesting that there is any static build up in Houston because of our normal 80% or so humidity.  But because the temp has been below 

freezing for several days, your right.  I took special caution with those chips.  Also I had some fun with the dog (accidently).  I walked across the carpet and went to 

pet her and ended up zapping her on the nose!  She let out a yelp, ran to my wife, and hasn't so much as looked at me the rest of the day today.

 

DavidMil



#19 SoundGammon OFFLINE  

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Posted Wed Jan 17, 2018 10:25 PM

I see you have a ProBurner too!



#20 DavidMil OFFLINE  

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Posted Thu Jan 18, 2018 12:42 AM

I see you have a ProBurner too!

 

Yup.  A bright orange, 2 pound, left hand slot only, Thompson Pro Burner.

 

DavidMil



#21 SoundGammon OFFLINE  

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Posted Thu Jan 18, 2018 12:57 AM

Is it the newer one with XL-XE on it?



#22 DavidMil OFFLINE  

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Posted Thu Jan 18, 2018 12:34 PM

I'm guessing it is the newer one because the label says for Atari 400, 800, XL, and XE computers.  I can't find a

copyright date or a publication date on the burner or the docs.  The labels on the burner are also orange.  I can

post a picture if you'd like.

 

DavidMil

 

PS.  I'm going to put the 1200XL Eprom on the burner this evening, and see what comes up.

DM



#23 kheller2 OFFLINE  

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Posted Thu Jan 18, 2018 3:46 PM

I'm guessing it is the newer one because the label says for Atari 400, 800, XL, and XE computers.  I can't find a

copyright date or a publication date on the burner or the docs.  The labels on the burner are also orange.  I can

post a picture if you'd like.

 

DavidMil

 

PS.  I'm going to put the 1200XL Eprom on the burner this evening, and see what comes up.

DM

 

 

Run and MD5 checksum against it and post the results .. I can easily compare it to the known LO ROMs out there for the 1200XL.



#24 CharlieChaplin OFFLINE  

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Posted Thu Jan 18, 2018 4:31 PM

 

 

Look here at the model #:

https://atariage.com...SoftwareID=3872

 

The cartridge shell of this Epyx cart. is often (always?) used for Eproms. They often (always?) used a slightly different cart. shell for ROMs, e.g. this one:  https://atariage.com...areLabelID=2525

 

So I would say Epyx "Gateway to Apshai" (Eprom version) is correct for 614R-A and 614R-B. I also had a Gateway to Apshai Eprom version and later bought a ROM version (kept the ROM version/pcb and changed the Eprom version/pcb to my likes by removing the Eproms and burning a different game on them)...


Edited by CharlieChaplin, Thu Jan 18, 2018 4:42 PM.


#25 DavidMil OFFLINE  

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Posted Thu Jan 18, 2018 9:55 PM

 

 

Run and MD5 checksum against it and post the results .. I can easily compare it to the known LO ROMs out there for the 1200XL.

 

Forgive my ignorance but what is MD5?  I know what a checksum is, just not MD5.  I have saved all three EPROMs to a floppy as bin files.  Now, how do I get them posted here?

I have a SIO2USB device running Mydos 4.53, and APE for Windows.

 

DavidMil






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