mc68ec060 Freescale Semiconductor, Inc, mc68ec060 Datasheet - Page 406

• Manufacturer Part Number: mc68ec060
• Description: Mc68060 Superscalar 68k Microprocessor Including The Lc060 And Ec060
• Manufacturer: Freescale Semiconductor, Inc

FSAVE
MC68060 Instructions
Operation:
Assembler
Syntax:
Attributes:
Description:
D-16
saves the internal state of the floating-point unit in a state frame located at the effective
address. After the save operation, the floating-point unit is in the idle state, waiting for
the execution of the next instruction. The first long word written to the state frame con-
tains the frame format on the third byte. The state frame always contains three long
words.
Any floating-point operation in progress when an FSAVE instruction is encountered
can be completed before the FSAVE executes, saving an IDLE state frame. An IDLE
state frame is created by the FSAVE if no exceptions occurred; otherwise, an EXCP
state frame is created.
If in Supervisor State
Else TRAP
FSAVE<ea>
Unsized
FSAVE allows the completion of any floating-point operation in progress. It
Then FPU Internal State State Frame
Save Internal Floating-Point State
M68060 USER’S MANUAL
(MC68060 only)
FSAVE
MOTOROLA