r8a77850anbg Renesas Electronics Corporation., r8a77850anbg Datasheet - Page 143
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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• Source: Execution of TRAPA instruction
• Transition address: VBR + H'00000100
• Transition operations:
TRAPA_exception()
{
}
As this is a processing-completion-type exception, the PC contents for the instruction
following the TRAPA instruction are saved in SPC. The value of SR and R15 when the
TRAPA instruction is executed are saved in SSR and SGR. The 8-bit immediate value in the
TRAPA instruction is multiplied by 4, and the result is set in TRA [9:0]. Exception code H'160
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.
Unconditional Trap
SPC = PC + 2;
SSR = SR;
SGR = R15;
TRA = imm << 2;
EXPEVT = H'0000 0160;
SR.MD = 1;
SR.RB = 1;
SR.BL = 1;
PC = VBR + H'0000 0100;
Rev.1.00 Jan. 10, 2008 Page 113 of 1658
5. Exception Handling
REJ09B0261-0100
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