18 Mar
2012
18 Mar
'12
4:09 a.m.
On 03/17/2012 08:31 PM, Dave McGuire wrote:
AMD's isn't more recent or more
"friendly"; it's a second source of
the same chip.
Are you sure? AMD was definitely a second-source for the original NMOS
part, but I thought AMD designed the Am85C30 as a CMOS replacemen, and
licensed the CMOS version back to Zilog. I could be wrong.
Both AMD and Zilog made various enhanced versions of the part that did
add new features, which may or may not make it more friendly depending
on your POV. I'm not certain that the enhanced parts from AMD and
ZIlog, even if they bear the same part number, are actually completely
compatible; I think the development diverged. One example is the
85230. I don't remember the others at the moment. I had to study all
this at a job in the late 1990s.