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ursanthu21
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Joined: 18 Jun 2010
Posts: 2
Location: chennai
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| WHAT IS THE USE OF BNO INSTRUCTION IN ASSEMBLER ........... |
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PeterHolland
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Joined: 27 Oct 2009
Posts: 2481
Location: Netherlands, Amstelveen
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BNO = branch if not ones
used for bit testing, e.g. :
| Code: |
TM 0(R7),X'80' LAST PARM PTR PRESENT ?
BNO PARMERR
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karthikramaiah
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Joined: 25 Jun 2010
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Location: chennai
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as given in the code the Test under mask sets a condition code.
it usuallyseyts decimal 0 or1 or3. now assume these decimals in binary. if there is no 1's in the condition code it will branch[/i][/b] |
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Bill O'Boyle
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Joined: 14 Jan 2008
Posts: 2501
Location: Atlanta, Georgia, USA
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To be precise, BNO is not an instruction, but rather a Mnemonic, which represents a 4-Bit Condition Code, which is tested after an instruction, such as a "TM". Without using the Mnemonic, this particular CC would be 14.
Bill |
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