[Simh] Problem with MT_ASTLVL on the VAX-11/780

[Johnny Billquist]

No. MOVZx is when you don't want to have the value sign extended. Ie. move *zero* extended.

  Johnny 


Matt Burke <matt at 9track.net> skrev: (18 maj 2017 02:00:21 CEST)
>On 18/05/2017 00:18, Johnny Billquist wrote:
>>
>> Hum. Do I remember wrong? I seem to remember that when you MOVB to a
>> register, the value should be sign extended. So not just the low byte
>> should have been modified.
>>
>>     Johnny
>>
>
>I think you may be thinking of MOVZBL (and MOVZWL for words).
>
>Matt
>
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