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Pankaj Shrivastava
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I have seen Register 0 as a valid Operand for the source or reciever Address , Wheareas Register 0 as an operand in many instructions just behaves as null operation like :
BALR R,0
Why machine cant resolve the address put in the register 0. |
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enrico-sorichetti
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because the manual says so ...
because they ( the designers ) decided so ...
... |
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Bill O'Boyle
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Your question relates to an MVCL, but your example questions R0 in a BALR?
R0 (an even register) can be used to house a sending or receiving address in an MVCL.
Bill |
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Pankaj Shrivastava
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Hi Bill ,
Yes I intented to say the same thing . R0 can host theh address in MVCL ..but for other instructions it cant host an address and just implies a null. Why did designer allowed R0 to host an address in MVCL and not for any other instructions . Any special reason behind this ? |
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enrico-sorichetti
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| Quote: |
| Why did designer allowed R0 to host an address in MVCL and not for any other instructions . Any special reason behind this ? |
if You are really feel the need to know...
impendig anorexia
long sleepless nights,
nightmares of bytes losing the parity...
add as many as You want
You can try by searching the US patents data base,
hard to believe but it contains lots of trade secrets 
or look at ...
www.research.ibm.com/journal/
IBM systems Journal
IBM journal of research and development
PS
the wrath
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| that all your bytes lose their parity |
is my favorite |
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Pankaj Shrivastava
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Location: Pune
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 thx Enrico ..I will let u knw after consulting those research documents  |
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