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SH7785 Datasheet(PDF) 129 Page - Renesas Technology Corp |
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SH7785 Datasheet(HTML) 129 Page - Renesas Technology Corp |
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129 / 1692 page  5. Exception Handling Rev.1.00 Jan. 10, 2008 Page 99 of 1658 REJ09B0261-0100 Execute next instruction Is highest- priority exception re-exception type? Cancel instruction execution result Yes Yes Yes No No No No Yes SSR ← SR SPC ← PC SGR ← R15 EXPEVT/INTEVT ← exception code SR.{MD,RB,BL} ← 111 SR.IMASK ← received interuupt level (*) PC ← (CBCR.UBDE=1 && User_Break? DBR: (VBR + Offset)) Interrupt requested? General exception requested? Reset requested? EXPEVT ← exception code SR. {MD, RB, BL, FD, IMASK} ← 11101111 PC ← H'A000 0000 Note: * When the exception of the highest priority is an interrupt. Whether IMASK is updated or not can be set by software. "Accepted interrupt level" is B'1111 for NMI. Figure 5.1 Instruction Execution and Exception Handling |
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