650
Floating-point Math Instructions Section 3-15
Description MOVF(469) outputs the single-precision floating-point number (32-bit source
data in IEEE754 format) from source words S+1 and S to destination words
D+1 and D.
Flags
Precautions When MOVF(469) is executed, the Error Flag is turned OFF.
If the source data in S+1 and S is 0, the Equals Flag is turned ON. If the
source data is non-zero, the Equals Flag is turned OFF.
If the source data in S+1 and S is negative, the Negative Flag is turned ON.
Operation Example
Indirect DM/EM
addresses in binary
@ D00000 to @ D32767
@ E00000 to @ E32767
@ En_00000 to @ En_32767
(n = 0 to C)
Indirect DM/EM
addresses in BCD
*D00000 to *D32767
*E00000 to *E32767
*En_00000 to *En_32767
(n = 0 to C)
Constants #00000000 to #FFFFFFFF
(binary)
---
Data Registers ---
Index Registers ---
Indirect addressing
using Index Registers
,IR0 to ,IR15
–2048 to +2047 ,IR0 to –2048 to +2047 ,IR15
DR0 to DR15, IR0 to IR15
,IR0+(++) to ,IR15+(++)
,–(– –)IR0 to, –(– –)IR15
Area S R
D+1 D
S
S+1
Source words
Destination words
Name Label Operation
Error Flag ER OFF
Equals Flag = ON if the source data is 0.
OFF in all other cases.
Negative Flag N ON if the source data is negative.
OFF in all other cases.
MOVF
+3.0
W00000
When input condition W00000 is ON, the content of D00000 and D00001 (+3.0)
is stored in floating-point format (IEEE754 format).
#4040 #0000
D00000
D00001
D00000
Equivalent to +3.0 in floating-point format
To Next Page
Loading...
Need help?
General
