r8a77850anbg Renesas Electronics Corporation., r8a77850anbg Datasheet - Page 147
r8a77850anbg
Manufacturer Part Number
r8a77850anbg
Description
Renesas 32-bit Risc Microcomputer Superh? Risc Engine Family
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.R8A77850ANBG.pdf
(1692 pages)
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(12) Slot FPU Disable Exception
• Source: Decoding of an FPU instruction in a delay slot with SR.FD =1
• Transition address: VBR + H'00000100
• Transition operations:
Slot_fpu_disable_exception()
{
}
The PC contents for the preceding delayed branch instruction are saved in SPC. The SR and
R15 contents when this exception occurred are saved in SSR and SGR.
Exception code H'820 is set in EXPEVT. The BL, MD, and RB bits are set to 1 in SR, and a
branch is made to PC = VBR + H'0100.
SPC = PC - 2;
SSR = SR;
SGR = R15;
EXPEVT = H'0000 0820;
SR.MD = 1;
SR.RB = 1;
SR.BL = 1;
PC = VBR + H'0000 0100;
Rev.1.00 Jan. 10, 2008 Page 117 of 1658
5. Exception Handling
REJ09B0261-0100
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