🚀 go-pugleaf

jhall@wpi.WPI.EDU (John Clinton Hall) writes:

>AccordingtMicrosoft's _Mixed-Language Programming Guide_, "A procedure
>caled from any of the Microsoft high-level languages should preserve the
>values of SI, DI, SS, and DS (in additon to BP, which is already saved)." 
>However, does one need to save the ES register if it is mdified?  How abo
>the flags register?

To save the ES register, you can always:

	MOV AX,ES
	PUSH AX

	...

	POP AX
	MOV ES,AX

The general registers (AX - DX) can transfer stuff into the segment registers
and vice versa.  Just remember: if you save the REAL AX register, and then mov
like above, you'll have to pop the "fake" AX register before you pop the
"real" one.
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