22 Jun
2005
22 Jun
'05
2:50 p.m.
On 6/20/05 1:52 PM, "Dwight K. Elvey" <dwight.elvey at amd.com> wrote:
Hi Gary
You didn't say what the main issue is? The problem
could be most any thing. Have you listened to the
recordings to make sure you don't have dropouts?
Do you have an oscilloscope that you can use to
look at what the Z80 sees?
No, Don't have an oscope handy, sadly, but I managed
to
Get a partial load from one tape, but I've given up since
The other tapes seem to be very faded and whatnot, I don't
Think these tapes are giving a good load any time soon.
If you have dropouts caused by wrinkled tapes, wind
the tape backwards and let it sit for about a week.
If it is folded, you may have to do some more serious
recovery tricks. I've has to do this on Poly88 tapes.
It may also be a problem in the Sinclair. Sometimes
the ceramic capacitors become leaky. This can effect
the threshold of the input comparitor.
I'll have to check that
There are still more things to look at. Try to
isolate
the problem. Things like, are you get partial reads?
And things like was meantioned about tape speeds.
If you are using a hi-fi unit, most line outs don't
I'm using a hi-fi unit
with the noise reduction and other
Processing circutry disabled (There's switches on the front
Panel to do this), and running it through my amp, feeding the
Headphone jack into the TS, and that's how I did manage to
Get one program I had recorded to load, and a partial load off of
Another.
provide enough signal level.
Dwight