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Syntax: DM ( I0 , M0 ) = dreg ;
I1 M1 <data>
I2 M2
I3 M3
I4 M4
I5 M5
I6 M6
I7 M7
data: <constant>
‘%’ <symbol>
‘^’ <symbol>
Permissible dregs
AX0 MX0 SI
AX1 MX1 SE
AY0 MY0 SR1
AY1 MY1 SR0
AR MR2
MR1
MR0
Example: DM (I2, M0) = MR1;
Description: The Data Memory Write Indirect instruction moves the
contents of the source to the data memory location specified in the
instruction word. The immediate data may be a constant or any symbol
referenced with the “length of” (%) or “pointer to” (^) operators.
The addressing mode is register indirect with post-modify. For linear (i.e.
non-circular) indirect addressing, the L register corresponding to the I
register used must be set to zero. When a register of less than 16 bits is
written to memory, the value written is sign-extended to form a 16-bit
value. The contents of the source are always right-justified in the
destination location after the write (bit 0 maps to bit 0).
Status Generated: None affected.
MOVE
DATA MEMORY WRITE (Indirect Address)
(instruction continues on next page)
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