I Need help on how to write the full opcode of the above x86 codes.
i saw like for sgdt it is 0F 01 /1. the problem is i dont know the full opcode will it be 0F01[01-this is what am not sure][then the 48 bits]
FASM cannot compile the code
I need help on get features function. es:di what exact memory will these point to?
Also i need help on mode 116h [1024x768] how do i switch the banks? and also whre do i get the feature that gives me the direct pointer to the bank switch/ window changing vesa code?
Which will i change 1st the bank or window? anyway what do the window and the banks actually refer? please send me a picture showing the bank and window in a screeen.
could you please explain to me what do the x86 registers refer to and how to change them incase of protected or real mode?