I've only ever seen the diagnostic tape, but there are utilities that will let you dump software to tape using a sound card.

Axatax wrote on 2020-10-27, 01:44:

I've only ever seen the diagnostic tape, but there are utilities that will let you dump software to tape using a sound card.

Thank you for your answer. Any names of utilities?

An educational program 'Typing Tutor' was available from IBM on cassette, but good luck finding that one: http://books.google.com/books?id=VDAEAAAAMBAJ … ette%22&f=false

There was at least one game written in BASIC, which ran off a disk, but it allowed you to save/load from tape (Avalon Hill's' Galaxy').

Also, a nice experiment: https://www.youtube.com/watch?v=Kd975GSm15w

I don't know specifically, but the Commodore/Spectrum and ham radio communities have software that does it.

Many years ago i wrote two simple command-line tools. This tools are written for exUSSR Soviet PC-clone home computer named "Poisk" (ПЭВМ Поиск), not for original IBM PcJr. But cassette tape format are fully compatible, with some minor differences (maybe some differences with files type in header). Anyway, i provide fully source code for this tools in archives, you can modify tools for your PC....

First WAV2CAS - try recover data from your tapes. For example, if you converted IBM_PC_Diagnostic_Cassete from mp3 to 8 bit unsigned PCM WAV file and enter

1wav2cas.exe IBM_PC_Diagnostics_Cassette.wav diagn.cas

you got basic loader for IBM diagn tools.
If tape record have noice and other distortion, try use /fixcrc key - intellegent (c) (r) (tm) mode, slowly. Auto fixing CRC errors alghorithm.
/mc key for decode uxUSSR Soviet PC-clone home computer "MC-1502" tapes, not actualy for IBM.
/log - create wav2cas.log log file in current directory.

Second tools, CAS2WAV . May convert you basic or other file to WAV file, then can be played from iPod or other music player directly to IBM PC / PcJr.
Run CAS2WAV without options for usage help. For ex:

1cas2wav my_prog.bas myprog.wav -n MYPROG