Intel does some squirrelly crap but I can assure you that unless it says
80C88 it is NMOS ( the -2 version of the 8088 is Enhanced NMOS or HMOS, but
still not CMOS ). CMOS is not necessarily slow either, but at higher
frequencies it looses it's low power advantage. We used SOS ( Silicon On
Sapphire ) 1802s on spacecraft because of the low power, and the SOS makes
it much less static sensitive and Radiation Hardened. Intel screwed us when
they stepped the 8031 to CMOS ( 80C31 ) as they forgot to mention the
multiple pages of errata of things that didn't work right, like Power on
Reset and Interrupts.....
Best regards, Steven
----- Original Message -----
From: "Chris M" <chrism3667 at yahoo.com>
To: "General Discussion: On-Topic and Off-Topic Posts"
<cctalk at classiccmp.org>
Sent: Friday, February 13, 2009 8:10 AM
Subject: Re: 8088 vs. 80c88
regardless, and be sure I am no expert on semiconductor manufacturing, I'd
be surprised to find out that all 8088's were CMOS after a certain date. The
80c88's were used mostly in small laptops, no? (small being anything smaller
then that Zenith big honker, w/the shocking blue display. It used a *real*
8088 IINM). A CMOS version would be slower and more prone to damage from
static electricity. And it would require less power. Off the top of my head
I can't think of any desktops that used them, but I may have actually ran
into 1 or 2 in my travels.
But I am glad you managed to answer your own question Jimbo :)
--- On Thu, 2/12/09, Jim Leonard <trixter at oldskool.org> wrote:
From: Jim Leonard <trixter at oldskool.org>
Subject: Re: 8088 vs. 80c88
To: General at
mail.mobygames.com, "On-Topic and Off-Topic Posts"
<cctalk at classiccmp.org>
Date: Thursday, February 12, 2009, 2:49 PM
Jim Leonard wrote:
So a simple routine to try to identify the 8088 vs.
the 80c88 would look
something like:
mov cx,2 ; test if following instruction will be
; repeated twice.
db 0F3h,26h,0ACh ; rep es: lodsb
jcxz Yes ; intel non-CMOS chips do not care of rep
jmp Nope ; before segment prefix override, NEC and
; CMOS-tech ones does.