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Questions tagged [cassette-tape]

For questions regarding data storage on magnetic tape in a cassette tape format.

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8 votes
1 answer
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What's the difference between Kansas City tape standard and CUTS?

A number of a different computer systems use a tape encoding based on either the Kansas City or CUTS standards. There's a very brief overview on Wikipedia, but it's not clear what the difference ...
Jules's user avatar
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18 votes
2 answers
2k views

Cassette tape storage formats

I just came across this excellent article on cassette tape storage formats. One thing confuses me though... in the "all digital" examples, like Figure 1C, what exactly ends up on the tape? That is, ...
Maury Markowitz's user avatar
66 votes
1 answer
5k views

How do I extract the program from the Radiohead "Nude" tribute by James Houston?

One of my favorite videos ever is a tribute to Radiohead "Nude" by James Houston. I have never seen the program in the video available to download, so I've just made an attempt to extract it ...
terrorrussia-keeps-killing's user avatar
20 votes
6 answers
13k views

How much data could a home computer store on an audio cassette?

The use of audio cassettes for storing data for home computers was a great example of repurposing an existing invention. Cassettes were sold in a variety of capacities, and labelled with their audio ...
Kaz's user avatar
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18 votes
7 answers
6k views

What should be the waveform for ZX Spectrum tapes?

I am digitizing about 40 tapes with programs for the ZX Spectrum. I am somewhat puzzled by the waveform after digitization. The signal of most cassettes is meander-shaped. One of the cassettes can ...
A. Rumlin's user avatar
  • 391
15 votes
1 answer
918 views

What format is used for CoCo cassette tapes?

Color Computer machines initially used audio cassette tapes for storage. How was the data stored? What was the maximum bit rate?
tlindner's user avatar
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4 votes
1 answer
815 views

Use of PSK for storage of data on audio tape

Most home computers of the 70s and early 80s were able to save and load data on audio cassettes. Typically, in order to do this they encoded the data using frequency shift keying (FSK), i.e. for a '1'...
Jules's user avatar
  • 13k
41 votes
5 answers
30k views

Loading ZX Spectrum tape audio in a post-cassette world

My ZX Spectrum 48k seems very resistant to working with audio input. I no longer have any cassette players, so am relying on audio files from digital players. I have been able to save and verify a ...
scruss's user avatar
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34 votes
17 answers
17k views

Did computer games for Commodore 64 really take "25 minutes" to load "if everything went alright"?

In the Swedish-language song "Nostalgi" by Markoolio from 2003, some of the lyrics go: My first computer had 64 kB you surfed on the water, and that's that The computer games were loaded ...
Kommendåre 64's user avatar
27 votes
4 answers
4k views

Why did the Atari 8-bit computers make beeping noises while accessing the disk and cassette drives?

If you've ever used an actual Atari 8-bit computer with either a cassette or disk drive, you would have noticed that it made a variety of "beeping" noises while accessing the devices. Specifically, ...
bjb's user avatar
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19 votes
9 answers
2k views

Developing an application in the era of cassette tapes (audio-tapes)

My colleague and I have just had a conversation and we were wondering how the process of developing an application was done in the era of cassette tapes. Today we have HDDs, backup HDDs, FTPs, ...
jacek.ciach's user avatar
13 votes
1 answer
1k views

Did the Apple 1 cassette interface card have its own ROM?

According to this page, the Apple 1 monitor program was located in addresses $F000-$FFFF, a ROM program to use the optional cassette interface card was at addresses $C100-$C1FF, and the peripheral ...
DrSheldon's user avatar
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12 votes
2 answers
3k views

What format is used for Apple II cassette tapes?

Apple II computers initially used audio cassette tapes for storage. How was the data stored? What was the maximum bit rate?
fadden's user avatar
  • 9,060
11 votes
2 answers
406 views

What format was used for Exidy Sorcerer cassette tapes?

The Exidy Sorcerer personal computer could use audio cassette tapes for program storage. In what format were programs (and data?) stored on tape? What was the data rate? I seem to remember the tape ...
hotpaw2's user avatar
  • 8,277
9 votes
1 answer
410 views

What is the effect of direct exposure of the magnetic disk of a floppy to ultraviolet (UV) light?

I was thinking of the mold issue of floppies and UV light (UV-C) came to mind. As ultraviolet (UV) is a form of electromagnetic radiation and floppies use a magnetic disk for storage and I vaguely ...
Bob Ortiz's user avatar
  • 1,662
8 votes
1 answer
3k views

What is the maximum BAUD rate for ZX Spectrum tapes?

I've played with various BAUD rate programs that allow you to save most of the RAM into a cassette tape up to around 9600 BAUD. Has anyone written or have a way to write the ram to tape (not ...
Fandango68's user avatar
8 votes
1 answer
1k views

How did the C64 interface tape drives?

How did the C64 interface tape drives? I'm aware that the external interface was basically a audio input - but how was this audio converted into digital data, and how was it loaded into RAM and ...
vidarlo's user avatar
  • 298
8 votes
4 answers
1k views

Cassette formats using ECC?

The Commodore systems famously wrote everything to the Datasette twice as a form of error correction. Most other formats I've looked at - Atari, CUTS and CoCo - lack any form of correction. Is anyone ...
Maury Markowitz's user avatar
3 votes
3 answers
2k views

Using VHS/MiniDV/CompactCassette as digital data storage? [closed]

How can VHS cassettes. MiniDV cassettes. Compact audio cassettes be used as digital data storage? Can the error correction strength be adjusted?
neverMind9's user avatar
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