19 Aug
2002
19 Aug
'02
10:30 a.m.
Joe wrote:
At 01:47 PM 8/19/02 -0700, you wrote:
I got this VIP for substantially less than that at a recent hamfest. Mike Haas and I
had both been over this guys stuff at least three times then I decided to go through the
stuff one more time while Mike went and got the car. That's when I found the VIP.
Needless to say, Mike was quite upset! It's amazing how many times you can look
through the same stuff and still find something that you previously overlooked.
It would probably work. I have a few KIM-1 cassette
programs
(most at 3x normal speed) posted as WAVs at
http://www.learnmicros.com. (And a few songs that KIM sings
too,
also as WAVs.) :)
This seems to be 100% reliable once you get the levels
right.
As an aside, none of those recordings came from a recorder,
but
directly from a "C" program which generated the WAV samples.
Probably the worst case would be you'd need an RC low-pass
filter between the playback device and your cassette input,
to simulate the low-pass characteristics of a voice-grade
tape recorder.
Undoubtedly, you'd have to experiment with the sample rate
and stuff. I found 16 Khz mono with 8 bit samples works
fine
for KIM at 3x speed (half-hypertape.) I couldn't figure out
how to generate half a wave in my "C" program, so I stopped
at 3 x normal speed. Hypertape's still da fastest for KIM.
:)
-- Ross
-- Ross
--- Joe <rigdonj(a)cfl.rr.com> wrote:
The VIPER news-letters are really great. There's loads of good info in them. Mike
has PILES of RCA docs for the Cosmac, ELF, VIP and other 1802 stuff.
At 10:36 AM 8/19/02 -0700, you wrote:
Good for you.
--- Joe <rigdonj(a)cfl.rr.com> wrote:
> I was in a surplus store today and...
>... did find a 6 inch high stack of manuals for the RCA Cosmac VIP
> :-) :-) :-) :-)
Did you get them?
You bet! If so, what part numbers?
http://cgi6.ebay.com/aw-cgi/eBayISAPI.dllViewSellersOtherItems&userid=r…
No one seemed interested so I put them on E-bay.
If you're interested in
the VIP or ELFs then take a good look at them, there's LOTS of good info
in them.
Looks like I have originals for all of the photocopied data sheets
and RCA manuals you have (and possibly one or two you don't), but I
do not have any issues of VIPER. I have a VIP too (altough Mike has it at the
moment). I bought at a
hamfest earlier this year. I bought the manuals from the same people
except they were at their store. 99% chance that these manuals went with
that same VIP.
I got my VIP about 16 years ago for $35 at Dayton (same year I got
an ASR-33 w/110 baud data set for $20). What manuals I have, came
from the local RCA distributor for cover price ($5) or free.
Somewhere, I have a cassette of CHIP-8 and most of the CHIP-8 games
from the VIP manuals - I typed it all in and saved it to tape myself.
One of my ultra-low priority projects is to locate the tape, slurp
it into a modern machine and cut MP3s of the programs and see if I
can use my Rio PMP300 (or portable CDDA/MP3 player) as a load device.
That would be "interesting"!
Joe
>
>-ethan
>
>
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