Thanks for the boost, Alex. I'll do some work on my own now, and get back to you. I am going to try more qemu versions, then I am going to try modifying or rewriting the bios file in qemu to see if I can bypass this limit. I guess it is trying to emulate the x86-64 architecture to the bit, so maybe as a vm the 64kb limit is not needed? Another thought I had was designing my own hardware in the vm along the lines of PilMCU. I am by no means qualified to do so (yet!), but that's the fun isn't it? 64bit is the kicker, since I have some 32 bit boards lying around, and an FPGA proto board.
Rob On Mon, Jul 20, 2015 at 9:26 PM, Alexander Burger <a...@software-lab.de> wrote: > On Mon, Jul 20, 2015 at 08:30:01PM +0800, Robert Herman wrote: > > Is there a way to change a qemu bios file config? > > The man page of qemu-system says "QEMU uses the PC BIOS from the Seabios > project and the Plex86/Bochs LGPL VGA BIOS". But there is also a > > -bios file > > option. I haven't tried. > > > > Could I change beg.l to > > load it in segments, or would it still require a 670kb read to put it > > together again? > > This is surely possible, but quite tedious. You would have to modify the > 'DAP' structure (starting at line 87) for varying "Start sector"s, > "Offset"s and smaller "Number of sectors" values, and call int 13h > repeatedly. So you could read it all in e.g. 11 pieces, each <= 64 KiB. > Perhaps not worth the effort ... > > ♪♫ Alex > -- > UNSUBSCRIBE: mailto:picolisp@software-lab.de?subject=Unsubscribe >
