29 Apr
2006
29 Apr
'06
2:53 p.m.
On Friday 28 April 2006 10:35 pm, Chuck Guzis wrote:
On 4/28/2006 at 8:23 PM Kelly Leavitt wrote:
My understanding of these parts is that the 179x series had the data separator
on-chip, while the 177x parts had to have a separate chip for the purpose...
--
Member of the toughest, meanest, deadliest, most unrelenting -- and
ablest -- form of life in this section of space, a critter that can
be killed but can't be tamed. --Robert A. Heinlein, "The Puppet Masters"
-
Information is more dangerous than cannon to a society ruled by lies. --James
M Dakin
I'm lazy tonight. Are there any pin compatible
replacments for this chip?
It is the SD floppy controller on my TRS-80 EI. It is very sick...
Any sources for 1771 anywhere. I see lots of 197x available.
WD1771's weren't uncommon, so you might still be able to locate a pull.
But it is a 30-year old chip...
Alternatively, a WD1791/1792/1795 is very close in pinout and command set
compatibility and probably could be made to work with a little tweaking.