SK>What is the best way of getting the high word of EAX ?
I can think of several ways of doing that, but I am uncertain which you would
consider the "best" way... Here's a few ideas for moving the high word of
AX
into AX:
1. SHR EAX, 16
2. PUSH EAX
POP AX
POP AX
3. BSWAP EAX ; 486+ only
XCHG AL, AH
4. ROR EAX, 16
(or) ROL EAX, 16
5. SHRD EAX, EDX, 16 ; EDX can be changed to another register
; if desired... only the new high word of EAX
; will be affected
6. MOV [mem], EAX
MOV AX, WORD PTR [mem+02]
7. PUSH DS
PUSH ES
POP DS
MOV SI, DI ; assuming ES:[DI] points to valid memory
STOSD
LODSW
LODSW
POP DS
I suspect there are more possibilities, but I'll leave it at that for now.
((Cloud))
MauveCloud@juno.com
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