6 Aug
2007
6 Aug
'07
12:25 p.m.
On 6 Aug 2007 at 20:48, river wrote:
Why did Intel bring out the 8085A? Were there issues
with the 8085?
I don't think that 8085's aren't particularly rare; basically the
original NMOS implementation. The 8085A fixed a few bugs--IIRC,
there were some issues in device selection timing (easily fixed with
a little "glue") and it seems to me that there was also a strange
race condition among the RST x.5 and TRAP interrupts. Maybe someone
remembers--the 8085a came along pretty quickly after the 8085.
Far better than either of the NMOS versions, however are the -AH
HCMOS models. Faster clocks and much lower power drain.
Cheers,
Chuck