Store Floating-Point Single with Update

D-Form

• stfsup FRS,D(RA)

Pseudo-code:

EA <- (RA) + EXTS(D)
MEM(RA, 4)<- SINGLE( (FRS) )
RA <- EA

Description:

Let the effective address (EA) be the sum (RA) +D.

The contents of register FRS are converted to single
format (see page 142) and stored into the word in stor-
age addressed by RA.

EA is placed into register RA.

If RA=0, the instruction form is invalid.

Special Registers Altered:

None

Store Floating-Point Single with Update Indexed

X-Form

• stfsupx FRS,RA,RB

Pseudo-code:

EA <- (RA) + (RB)
MEM(RA, 4)<- SINGLE( (FRS) )
RA <- EA

Description:

Let the effective address (EA) be the sum (RA) +(RB).

The contents of register FRS are converted to single
format (see page 142) and stored into the word in stor-
age addressed by RA.

EA is placed into register RA.

If RA=0, the instruction form is invalid.

Special Registers Altered:

None

Store Floating-Point Double with Update

D-Form

• stfdup FRS,D(RA)

Pseudo-code:

EA <- (RA) + EXTS(D)
MEM(RA, 8)<- (FRS)
RA <- EA

Description:

Let the effective address (EA) be the sum (RA)+D.

The contents of register FRS are stored into the dou-
bleword in storage addressed by RA.

EA is placed into register RA.

If RA=0, the instruction form is invalid.

Special Registers Altered:

None

Store Floating-Point Double with Update Indexed

X-Form

• stfdupx FRS,RA,RB

Pseudo-code:

EA <- (RA) + (RB)
MEM(RA, 8)<- (FRS)
RA <- EA

Description:

Let the effective address (EA) be the sum (RA)+(RB).

The contents of register FRS are stored into the dou-
bleword in storage addressed by RA.

EA is placed into register RA.

If RA=0, the instruction form is invalid.

Special Registers Altered:

None