sabbagh@acf5.NYU.EDU (sabbagh) (02/08/91)
I am trying to hack a program (Bradley's C Forth 83) that requires me
to check (in assembly) the "carry set" bit. Since I only have the
"complete" set of Iris manuals, there is no mention of a carry bit in
the Assembly language guide; only that the "add" instruction generates
an "overflow exception" if the result cannot be extended as a 32-bit
number.
1. How does one detect an overflow exception?
2. Is this (as I guess) equivalent to a "carry bit set" ?
3. Can I implement the equivalent of checking a carry bit without using
assembly?
Hadil G. Sabbagh
E-mail: sabbagh@cs.nyu.edu
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