SH7101 datasheet(95/560 Pages) RENESAS

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Section 5 Exception Processing

Rev.1.00 Sep. 18, 2008 Page 61 of 522

REJ09B0069-0100

5.1.3

Exception Processing Vector Table

Before exception processing begins running, the exception processing vector table must be set in

memory. The exception processing vector table stores the start addresses of exception service

routines. (The reset exception processing table holds the initial values of PC and SP.)

All exception sources are given different vector numbers and vector table address offsets. The

vector table addresses are calculated from these vector numbers and vector table address offsets.

During exception processing, the start addresses of the exception service routines are fetched from

the exception processing vector table that is indicated by this vector table address.

Table 5.3 shows the vector numbers and vector table address offsets. Table 5.4 shows how vector

table addresses are calculated.

Table 5.3

Exception Processing Vector Table

Exception Sources

Vector Numbers

Vector Table Address Offset

H'00000000 to H'00000003

Power-on reset

H'00000004 to H'00000007

H'00000008 to H'0000000B

Manual reset

H'0000000C to H'0000000F

General illegal instruction

H'00000010 to H'00000013

(Reserved by system)

H'00000014 to H'00000017

Slot illegal instruction

H'00000018 to H'0000001B

H'0000001C to H'0000001F

(Reserved by system)

H'00000020 to H'00000023

CPU address error

H'00000024 to H'00000027

(Reserved by system)

H'00000028 to H'0000002B

Interrupts

NMI

H'0000002C to H'0000002F

H'00000030 to H'00000033

H'00000034 to H'00000037

H'00000038 to H'0000003B

(Reserved by system)

H'0000003C to H'0000003F

H'0000007C to H'0000007F

Trap instruction (user vector)

H'00000080 to H'00000083

H'000000FC to H'000000FF

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