23 Mar
2022
23 Mar
'22
3:09 a.m.
On Tue, Mar 22, 2022 at 12:25 PM Chris Elmquist <chrise at pobox.com> wrote:
On Tuesday (03/22/2022 at 12:20PM -0700), Glen Slick wrote:
(Flogging a dead horse here slightly)
Just took a look at a previous version of that Intel databook:
http://www.bitsavers.org/components/intel/_dataBooks/1991_Intel_Memory_Prod…
Page 5-56 (Page 325 of the PDF) 27C256
Table 1. Mode Selection
Intelligent Identifier - Manufacturer 89H
Intelligent Identifier - Device 8DH
NOTES:
4. Programming equipment may also refer to this device as the 27C256A.
Older devices may have device ID = 8CH
So apparently the Device ID change is not specific to the A27C256
"Automotive" rated version, just that in the 1993 version of the
databook where I first looked the only EPROMs listed are the
"Automotive" ones.
On Tue, Mar 22, 2022 at 11:56 AM Chris Elmquist
<chrise at pobox.com> wrote:
Interesting. Thanks Glen. The part is clearly labeled as
"D27C256-200V10" so they must not have gotten around to changing the D
to an A :-)
Trying not to hijack the thread too much but I have an Intel D27C256-200
here in my TL866II+ programmer and it returns ID 89h / 8Dh.
http://www.bitsavers.org/components/intel/_dataBooks/1993_Intel_Memory_Prod…
Page 5-78 (Page 1201 of the PDF)
Table 1. Mode Selection
Intelligent Identifier - Manufacturer 89H
Intelligent Identifier - Device 8DH
That is for the A27C256 "Automotive" rated version.
My BP Microsystems BP-1610 device programmer software doesn't have an
entry for that one either.