On Thursday 19 January 2006 19:01, Mark Underwood wrote: [...]
Could someone let me know if there are any docs describing how I can use the boot-loader to upload my own kernel into RAM and ideally also re-flash it?
Yes, this has been fairly well reverse engineered. I wrote a tool called pblq that would do this sort of thing; see http://www.cowlark.com/amstrad.html. Someone else on the list has a very similar tool called pbltool which is apparently more complete --- sorry, I've forgotten who and where!
Is there a decent set of resources for this kind of software, yet? The one page I know about (Ralph's page on inputplus) has lots of information on the hardware, but not much about software.