TL;DR: Yes, good idea. I do that. I write software for Amstrad CPC in C using SDCC compiler (wow that even claims to supports C11 see http://sdcc.sourceforge.n

TL;DR: Yes, good idea. I do that. I write software for Amstrad CPC in C using SDCC compiler (wow that even claims to supports C11 see http://sdcc.sourceforge.net/ http://sdcc.sourceforge.net/ ). I made a framework, available on https://github.com/cpcitor/ https://github.com/cpcitor/ , that was forked into https://github.com/lronaldo/cpctelera/ https://github.com/lronaldo/cpctelera/ used for a number of recent CPC games. When transferring from the jack output of my PC to a CPC-464, I use a "cassette jack adapter" that I bought second-hand for 1€. Faster and more reliable that going through a cassette. Even when transferring to a machine fitted with a disk drive (e.g. a CPC-6128) the audio cable option has the benefit of no moving part (no swapping disks, etc) and is thus faster than using a PC to write to a floppy disk to be read by the CPC. I use this cable: https://coolnovelties.co.uk/coolnovelties/amstrad-cpc-pcw/278-amstrad-cpc-6128-cassette-tape-recorder-cable.html https://coolnovelties.co.uk/coolnovelties/amstrad-cpc-pcw/27... . SD card readers exist for the CPC, and other ways to inject data from the PC, but nothing beats a 1-10€ adapter/cable, simplicity and cost-wise. Similar things exist for the Commodore 64, e.g. http://www.indieretronews.com/2014/09/ucassette-best-tape-loader-for-c64.html http://www.indieretronews.com/2014/09/ucassette-best-tape-lo... If you want to try my CPC software, it's on https://github.com/cpcitor/ https://github.com/cpcitor/ with a very easy "getting started" method (git clone, a few extremely common dependencies, scripts fetch and compile specific tools for you, up to an emulator if your compilator can compile a SDL program). Details on https://github.com/cpcitor/cpc-dev-tool-chain/blob/master/documentation/how_to_install.md https://github.com/cpcitor/cpc-dev-tool-chain/blob/master/do...