A Few times I have prised out the Eprom off the motherboard and re-flashed it with my own small programs for a super-fast embedded system or game. (the eprom is

A Few times I have prised out the Eprom off the motherboard and re-flashed it with my own small programs for a super-fast embedded system or game. (the eprom is ussally the only socketed item on the motherboard apart from the CPU) The main problem is not overwritting the BIOS routines which, unless you rewrite them all (like linux of windows do) you still need to use (nothing here has really changed since 1981 and you can use anything that produces 16 bit code such as Turbo C, Assembler or Pascal) Usually there is plenty of spare EPROM space you can find and as your running in 16 bit mode this is enough for something like space invaders :-) PC Motherboards can usually be blagged for nothing, so its a great way to do low level experimenting.