23 Jun
1999
23 Jun
'99
4:46 p.m.
Aren't those 6520's just weak-kneed versions of the 6821? I haven't ever
had cause to use a 6520 and I though it was more or less the same in an
identical pinout as the 6821 (maybe the 6521).
Dick
-----Original Message-----
From: Dwight Elvey <elvey(a)hal.com>
To: Discussion re-collecting of classic computers
<classiccmp(a)u.washington.edu>
Date: Wednesday, June 23, 1999 3:30 PM
Subject: Re: Quest ELF was Top 150 .....
Philip.Belben(a)pgen.com wrote:
>
>
> Ethan Dicks wrote:
>
> > Now, my junk box is *much* deeper. I could probably assemble an entire
> > PET PCB and Amiga PCB, just from spares. Thankfully, I don't have to.
>
>
> You mean you actually have spare 6520 chips? How many can you send me
and how
much do you
want? I have at least one dead one in one of my PETS.
Philip.
Hi Philip
You can buy 6520A's from Jameco. Part number 43246 at $3.75us for
1-9 and $2.95us for 10+ ( 2.95 was a sale price and may have gone up
some). You can even deal through the net ( www.jameco.com ).
Take care
Dwight
PS
Of course you could always give me your PET.
I would give it a good home ;)
23 Jun
23 Jun
5:43 p.m.
"Richard Erlacher" <edick(a)idcomm.com> wrote:
Aren't those 6520's just weak-kneed versions
of the 6821? I haven't ever
had cause to use a 6520 and I though it was more or less the same in an
identical pinout as the 6821 (maybe the 6521).
Hi Dick
I don't recall if it was the 6820 that was the same as the
6520 or the 6821 that was considered the same as the 6520.
I have parts labled with both 65XX and 68XX numbers some place
in one of my pinball machines ( I remember seeing this ). In
anycase, I would think that in most cases one could also use
6821's as well. Jameco also sells these:
6821 part # 43596 @ 2.49
68B21 part # 43414 @ 2.95
Since the 6520A was a 2 MHz part I would think that:
6520 = 6821
6520A = 68B21
If it were me, I'd just order the 6520A and be happy.
Dwight
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