7-19
Section
Comparison Instructions
435
Description
When the execution condition is OFF, BCMP(68) is not executed. When the
execution condition is ON, BCMP(68) compares CD to the ranges defined by a
block consisting of CB, CB+1, CB+2, ..., CB+31. Each range is defined by two
words, the first one providing the lower limit and the second word providing the
upper limit. If CD is found to be within any of these ranges (inclusive of the upper
and lower limits), the corresponding bit in R is set. The comparisons that are
made and the corresponding bit in R that is set for each true comparison are
shown below. The rest of the bits in R will be turned OFF.
CB
≤
CD
≤
CB+1
Bit 00
CB+2
≤
CD
≤
CB+3
Bit 01
CB+4
≤
CD
≤
CB+5
Bit 02
CB+6
≤
CD
≤
CB+7
Bit 03
CB+8
≤
CD
≤
CB+9
Bit 04
CB+10
≤
CD
≤
CB+11
Bit 05
CB+12
≤
CD
≤
CB+13
Bit 06
CB+14
≤
CD
≤
CB+15
Bit 07
CB+16
≤
CD
≤
CB+17
Bit 08
CB+18
≤
CD
≤
CB+19
Bit 09
CB+20
≤
CD
≤
CB+21
Bit 10
CB+22
≤
CD
≤
CB+23
Bit 11
CB+24
≤
CD
≤
CB+25
Bit 12
CB+26
≤
CD
≤
CB+27
Bit 13
CB+28
≤
CD
≤
CB+29
Bit 14
CB+30
≤
CD
≤
CB+31
Bit 15
Flags
ER:
The comparison block (i.e., CB through CB+31) exceeds the data area.
Indirectly addressed DM word is non-existent. (Content of
*
DM word is
not BCD, or the DM area boundary has been exceeded.)