25 May
2006
25 May
'06
7:44 p.m.
Michael B. Brutman wrote:
Don Y wrote:
Yes, this is just a simple FM scheme for storing data *as* audio.
I am unfamiliar with the PC5150 so couldn't comment on that...
Michael B. Brutman wrote:
Ok, I need some education. On other home type machines, a standard
shoebox cassette player was used. I assume this is the same on the
PC5150. (This is the cassette interface on the motherboard.) Don't laugh - I'm serious.
I ran across a Advanced Diagnostics cassette tape for an IBM PC 5150.
I've never seen such a thing before. Besides the obvious
cassette-to-cassette copy (which I'm not equipped to do), how else
would one preserve this? A WAV file?
Sorry, I'm not sure whether you are saying this is an *audio*
cassette or a *data* cassette. Data cassettes had servo/clock
tracks recorded on them to retrieve the data -- i.e. I doubt
you will be able to read such a cassette without a data cassette
drive.
What would be an example of a different setup?
There are (were?) cassette tape drives that used special
cassettes (that looked just like the traditional
"Compact Cassette" used for audio). These had a special
servo/clock track recorded on the media. This track
was essential to the proper operation of the media in
the drive.
E.g., BULK erase an audio cassette and you can still use
it in the first scenario; in the second scenario, you have
rendered the tape completely useless (you can't rerecord
the clock track with the drive that is used to read/write
the tape)