13 Nov
2000
13 Nov
'00
10:27 a.m.
From: Dwight Elvey <elvey(a)hal.com>
Hi
Which 80186? These came in a lot of flavors. Every letter
following meant a change in pinouts or some feature inside.
All of the 80186's had some amount of select line decoding.
This along made them completely incompatible, pin wise, with
any of the more standard '86 family parts.
Dwight
Ah no, the 80186 and the 80188 were the only versions though the
PACKAGE was different with plastic and ceramic plus PLCC and
other varients. The only other version was the CMOS varients
same part in cmos. That it up held by my Intel 1987 embedded
controller Handbook.
The incompatability with other family of '86 parts was not from
package but from differences like the DMA controller and interrupt
controller are not the same as the more common 8237 and 8259A
that are used with 8088/6 and the 286 family. That created the
incompatability based on programming model and addresses
used. FYI: the 186 approach was a better implementation than
PC style.
Allison