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Neison1
PostPosted: Wed Sep 06, 2000 3:34 am 
What's the operation result of "TRB" of WDC65C02S?


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8BIT
PostPosted: Tue Jun 19, 2001 5:52 pm 
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Joined: Fri Aug 30, 2002 9:02 pm
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Location: Sacramento, CA
Hi,

Here is what I found on the TRB instruction:
!A AND M -> M with Z flag indicating result of A AND M (same as Bit instruction).
Note: the !A means the compliment of A. The result is stored in the memory address referenced, not the A register.

Two instructions: 1C-TRB asbolute and 14-TRB Zero page

Hope that helps!

Daryl

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8BIT
PostPosted: Tue Jun 19, 2001 5:52 pm 
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Joined: Fri Aug 30, 2002 9:02 pm
Posts: 1686
Location: Sacramento, CA
Hi,

Here is what I found on the TRB instruction:
!A AND M -> M with Z flag indicating result of A AND M (same as Bit instruction).
Note: the !A means the compliment of A. The result is stored in the memory address referenced, not the A register.

Two instructions: 1C-TRB asbolute and 14-TRB Zero page

Hope that helps!

Daryl

_________________
Please visit my website -> https://sbc.rictor.org/


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