TMS2516 to 2716 adapter?

Scucci

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I have no 2516 spares, anywhere... but I'm working on adding a HSS to my BattleZone (without spending $50 on the kit).

As best I can tell, the only difference between the TMS2516 and a standard 2716 is pin 18? Maybe 18 and 20? ... not great with these friggin' datasheets. Either way, it looks like one of them will have to be inverted.

That sound about right?

I have some gates here that I can use to invert the line, but I just need to know which one...
 
I've always swapped 2516's with 2716's without any modification. I always assumed they were the same (I've never checked the data sheets.....but I do know I've mixed them without issues). Now, a TMS2716 IS a different beast...as opposed to any other companies 2716.

Edward
 
I've always swapped 2516's with 2716's without any modification. I always assumed they were the same (I've never checked the data sheets.....but I do know I've mixed them without issues). Now, a TMS2716 IS a different beast...as opposed to any other companies 2716.

Edward

Yeah, sadly the board is strapped for TMS2516's... uggg.
 
A TMS2516 is the same as other companies 2716. What board?

Edward

BattleZone.

I was just reading and some of the pinball sites are saying it's the same pinout as a standard 2716... the datasheet through me off because of the nots over the lines, but I guess that's just there to confuse me... well done.
 
TMS 2516 = 2716

TMS 2716 NOT = 2716

----

Historical Trivia below...

TI first came out with the TMS-2708 eprom which was a 1kb eprom
and required three voltages to program

It then followed with the TMS-2716 which was exactly the same but 2kb.

At roughly the same time, INTEL launched their version of the 2716
which had a different pin-out and only needed a +25V to program.

The INTEL 2716 became very popular because they were easier (cheaper) to program
and followed what is now the JEDEC pinout standard.

The TMS-2716 quickly faded into obsolescence, (*)
but TI wanted to stay in the eprom market so they created an INTEL clone,
and named it TMS-2516 (...since the TMS-2716 was already used...)

(*) Note. The only game I know that can support TMS-2716
is Space Invaders, ... IF you've got the jumpers set correctly.
No other game, to my knowledge, uses TMS-2716 eproms.

So as others have stated,
TMS-2516 is the same as the "standard" 2716 .


TI did some other crazy things with 2532, 2732, 2564 and 2764 eproms,
.... but we'll keep that for another discussion !

;-)

Steph
www.Hobbyroms.com
 
I have no 2516 spares, anywhere... but I'm working on adding a HSS to my BattleZone (without spending $50 on the kit)..

There's no difference between the 2516 and the (non TMS)2716.

TI did the TMS2716 first, and it needed +5, -5, +12 to operate. Everyone else did 2716s with +5 only, and a different pinout.

When TI started doing single-voltage eproms, it changed the number to 25xx.
 
(*) Note. The only game I know that can support TMS-2716
is Space Invaders, ... IF you've got the jumpers set correctly.
No other game, to my knowledge, uses TMS-2716 eproms.

All midway 8080s support TMS2716, as do most of the Taito B&Ws.
Missile command definitely can be strapped for them, and some other ataris take them as well.
 
sorry for the reply to an old post..
but currently working on an Atari Tempest PCB & when looking at what EPROM's should i use
found from the factory they used a mix of TMS2516 & the standard 2716 chip's
had a "what the" moment until i cross referenced the datasheet's
So as in the above post's :- TMS2516 = 2716 :)
 
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