16 Jun
2009
16 Jun
'09
7:42 a.m.
Chuck,
You are correct sir. I had forgotten about the dark ages of 4000 Series 10
Volt Bulk CMOS. It's all coming back to me now, the night sweats and the
flashbacks.... I think I even have a 10 Volt CDP1802 lurking in a drawer
somewhere...
I've been looking for another 10 Volt CMOS EPROM without any luck. Looks
like building a programmer for the parts he has might be the best approach.
If we knew the source for the EPROM data we might be able to kludge up a
Willem ( sp? ) programmer to program a part....
Best regards, Steven
----- Original Message -----
From: "Chuck Guzis" <cclist at sydex.com>
To: "General Discussion: On-Topic and Off-Topic Posts"
<cctalk at classiccmp.org>
Sent: Monday, June 15, 2009 8:59 AM
Subject: Re: Intersil EPROM
On 15 Jun 2009 at 3:31, Scanning wrote:
I think it is highly unlikely that the Vcc in his
circuit is anything
but 5 VDC. The designer would have to be a real dumbass to do
otherwise.... Besides, it's easy enough to measure and remove all
doubt... I recommended a 27C16 not a 2716 ( and yes I know the Vcc is
the same ).
Consider the age of this piece of gear. If it uses old-style (4000
series) CMOS for other things, the use of a 10 volt Vdd/Vcc has
advantages--increased speed and noise immunitity being the chiefest.
Would this piece of equipment be too new to use HTL?
--Chuck