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ST20C2 Datasheet(PDF) 62 Page - STMicroelectronics

Part # ST20C2
Description  Instruction Set Reference Manual
PDF  212 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST20C2 Datasheet(HTML) 62 Page - STMicroelectronics

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cword
®
62/212
cword
check word
Code: 25 F6
Description: Check that the value in Breg can be represented as an N-bit signed
integer. Areg contains 2(N-1) to indicate the value of N (i.e. bit N-1 of Areg is set to 1
and all other bits are set to zero).
Definition:
if (Breg
<−Areg) or (Breg ≥ Areg)
IntegerError
Areg
′← Breg
Breg
′← Creg
Creg
′← undefined
Error signals:
IntegerError signalled if Breg is not in range.
Comments:
The result of the instruction is undefined if Areg is not an integral power of 2.
Undefined if Areg has more than one bit set.
Secondar y instruction.
See also:
cb cs csngl xword



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