Hi Eric,
Hi, I think you can indeed introduce a compile time option like the DOSEMU one (which makes put_console send output to int e6 function 13) to get output to Bochs / QEmu specific interfaces.
How should I implement the outp function to write to the port - write Open Watcom inline assembly and a separate ASM version for Turbo C, or somehow extract this function from the Run-Time Library? I have no idea how to do the latter.
On the other hand, you can just use DOSEMU :-).
Not under Windows! :) Unless I am mistaken! I checked the dosemu.org website so am fairly certain of avoiding embarassment here :)
I really recommend to use Bochs and the built-in debugger of Bochs for kernel debugging. Make sure you have a local copy of the kernel sources and of Ralf Brown's Interrupt List around, then you should really be able to understand things happening in the kernel very well after a while.
I did a bit of that and had some success. I would like source-level debugging though. Perhaps I can get Emacs to launch bochsdbg (crashes under Windows XP for me right now) and write some elisp to bring up the appropriate source file for the current CS:IP, like GUD but with more intelligence, i.e. it would need to look up symbol tables to figure out which listing file to open, etc. I have written elisp like this before but it didn't have to do symbol table lookups.
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