Texas Instruments MSP50C614 User Manual
Page 244
Individual Instruction Descriptions
4-152
4.14.57
RFLAG
Reset Memory Flag
Syntax
[label]
name
src
Clock,
clk
Word,
w
With RPT,
clk
Class
RFLAG
{
flagadrs}
1
1
N/R
8a
Execution
memory flag bit at {
flagadrs} data memory location
⇐
0
PC
⇐
PC + 1
Flags Affected
None
Opcode
Instructions
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
RFLAG
{flagadrs}
1
0
0
1
0
0
0
0
1
1
flagadrs
Description
Reset flag at addressed memory location to 0.{
flagadrs} includes two groups
of memory flag addresses: global flags, which are the first 64 word locations
in RAM; and relative flags, which are 64 locations relative to the page register
(R6). Flag address {
flagadrs} only addresses the 17
th
bit. (See section 4.3.7
for more information)
See Also
SFLAG, STAG, RTAG
Example 4.14.57.1
RFLAG *0x21
Resets the flag bit at RAM byte location 0x0042 to zero.
Example 4.14.57.2
RFLAG *R6 + 0x0002
Resets the flag bit at RAM byte location 0x0084 to zero. Assume R6 = 0x0080. The R6 register is
represented in bytes, but the 0x0002 is represented in words. Thus, 0x0080 bytes plus 0x0002 words
(or 0x0004 bytes) equals 0x0084 (bytes).