Omron CS1G/H-CPUxxH Instructions Manual page 603

Double-precision Floating-point Instructions (CS1-H, CJ1-H, CJ1M, or CS1D Only)
Applicable Program Areas
Operand Specifications
Description
582
Block program areas
OK OK
Area
CIO Area
Work Area
Holding Bit Area
Auxiliary Bit Area
Timer Area
Counter Area
DM Area
EM Area without bank
EM Area with bank
Indirect DM/EM
addresses in binary
Indirect DM/EM
addresses in BCD
Constants
Data Registers
Index Registers
Indirect addressing
using Index Registers
DBLL(844) converts the 32-bit signed binary value in S+1 and S to double-
precision (64-bit) floating-point data (IEEE754-format) and places the result in
words D to D+3. A single 0 is added after the decimal point in the floating-
point result.
S+1CH
D+3CH D+2CH
Signed binary data within the range of –2,147,483,648 to 2,147,483,647 can
be specified for S+1 and S. The floating point value has 24 significant binary
digits (bits). The result will not be exact if a number greater than 16,777,215
(the maximum value that can be expressed in 24-bits) is converted by
DBLL(844).
Example Conversions:
A signed binary value of 16,777,215 is converted to 16,777,215.0.
A signed binary value of –16,777,215 is converted to –15,777,215.0.
Step program areas Subroutines
OK
S
CIO 0000 to CIO 6142
W000 to W510
H000 to H510
A000 to A958
T0000 to T4094
C0000 to C4094
D00000 to D32766
E00000 to E32766
En_00000 to En_32766
(n = 0 to C)
@ D00000 to @ D32767
@ E00000 to @ E32767
@ En_00000 to @ En_32767
(n = 0 to C)
*D00000 to *D32767
*E00000 to *E32767
*En_00000 to *En_32767
(n = 0 to C)
#00000000 to #FFFFFFFF
(binary)
---
---
,IR0 to ,IR15
–2048 to +2047 ,IR0 to –2048 to +2047 ,IR15
DR0 to DR15, IR0 to IR15
,IR0+(++) to ,IR15+(++)
,–(– –)IR0 to, –(– –)IR15
SCH
Signed binary data (32 bits)
D+1CH DCH
Floating-point data (64 bits)
Section 3-16
Interrupt tasks
OK
D
CIO 0000 to CIO 6140
W000 to W508
H000 to H508
A448 to A956
T0000 to T4092
C0000 to C4092
D00000 to D32764
E00000 to E32764
En_00000 to En_32764
(n= 0 to C)
---