Re: Help witk IIe card

[sdspitfire@hotmail.com]

On Mon, 6 Oct 2008 00:29:44 -0700, Charlie Springer <RAM@regnirps.com>
wrote:

>On Sun, 5 Oct 2008 15:34:52 -0700, sdspitfire@hotmail.com wrote
>(in article <65fie4lg0ocnmhg8n865rdbs4cmbooe5u8@4ax.com>):
>
>
>You can't find it because you are looking at a batch number or something like 
>that. They are Mitsubishi MSM5165 8K static RAM chips in plastic (P) and 
>given the time period, the 15 is probably 150ns. The PAL is just the address 
>decoder and bus interface in a single chip.
>
>So, it is 16K RAM card, but 1986? Weird. Maybe they just wanted to go small 
>like with the tiny 80 col cards. Or maybe it was meant for something small 
>like the IIc.
>
>The PAL is an R type, so it has flip-flop registers (L type are just 
>combinatorial logic -- no state memory) and could have a soft switch for 
>turning access to the RAM on or off and other goodies.
>
>-- Charlie Springer


Interesting ... So, I have a "VERY RARE" Language card !! I'll list it
that way if I decide to sell it on eBay. :-)

Do have to wonder why Apple would produce a 16k RAM card in 1986 when
all the machines they were selling had at least 64k already.

Maybe some day, I'll locate some documentation. Until then, into the
spares box.