Sets a specified Floating-Point Status and Control Register bit to 0.
The mtfsb0 instruction sets the Floating-Point Status and Control Register bit specified by BT to 0.
The mtfsb0 instruction has two syntax forms. Each syntax form has a different effect on Condition Register Field 0.
|Syntax Form||Fixed-Point Exception Register||Record Bit (Rc)||Condition Register Field 1|
|mtfsb0.||None||1||FX, FEX, VX, OX|
The two syntax forms of the mtfsb0 instruction never affect the Fixed-Point Exception Register. If the syntax form sets the Record (Rc) bit to 1, the instruction affects the Floating-Point Exception (FX), Floating-Point Enabled Exception (FEX), Floating Invalid Operation Exception (VX), and Floating-Point Overflow Exception (OX) bits in Condition Register Field 1.
Note: Bits 1-2 cannot be explicitly set or reset.
|BT||Specifies Floating-Point Status and Control Register bit set by operation.|
mtfsb0 3 # Now bit 3 of the Floating-Point Status and Control # Register is 0.
mtfsb0. 3 # Now bit 3 of the Floating-Point Status and Control # Register is 0.
Interpreting the Contents of a Floating-Point Register.