It's not a cassette, but the PB-440 (Pitney-Bowes), renamed Raytheon 440 and its upgrade the raytheon 520 had a large reel paper tape with a bidirectional read and an "operating system" Load the os, say we want to run fortran, spin down to fortran, read the program in on 80 column cards (probably 2 pass, I don'trecall), automatically reload the monitor when done, read and execute the program from cards. Frequently used programs could be on the OS paper tape reel.
btw, that computer was user level microcode. multiple "machine" definitions, with typical 24 bit word, one instruction set optimized for fortran execution, one for fortran compilation, etc (don't remember exactly, as I only programmed in the microcode of mostly 2 micro instructions per word). <pre>--Carey</pre> > On 02/27/2024 8:58 AM CST erik--- via cctalk <cctalk@classiccmp.org> wrote: > > > Hi Jon! > > > think the Bendix G-15 had cassettes for the 5-level tape > > they used. >
