Quote:
Originally Posted by Toni Wilen
I'd say they are technically correct. I don't think those bit combinations are supposed to be used because instruction becomes plain move  |
Sure for most of them
But take this snippet:
Code:
lea $4.w,a0
moveq #0,d0
move.l a0,$0.w
dc.b $2c,$70,$09,%00010101
dc.b $2c,$70,$09,%10010101
That disassemble to:
Code:
00642376 41f8 0004 LEA.L $0004,A0
0064237A 7000 MOVE.L #$00,D0
0064237C 21c8 0000 MOVE.L A0,$0000 [00000004]
00642380 2c70 0915 MOVEA.L ([],D0.L) == $00000004 [002008d4],A6
00642384 2c70 0995 MOVEA.L ([],D0.L) == $00000004 [002008d4],A6
Considering the bits encoding, first move to A6 rightly insert the indirect base content (what is at offset 0 of execbase).
You've execbase in A6 only in the later move, because base is suppressed.