32186 datasheet(106/1032 Pages) RENESAS

106 / 1032 page

EIT

4-4

32185/32186 Group Hardware Manual

Rev.1.10 REJ09B0235-0110 May 15, 07

Note 1: When the zero division exception enable (EZ) bit (FPSR register bit 19) = "0"

Note 2: When the zero division exception enable (EZ) bit (FPSR register bit 19) = "1"

Please note that the DIV0 EIT processing does not occur in the following conditions.

Table 4.2.5 Cases in Which No DIV0 Occur

4.2 EIT Events

3) Inexact Exception (IXCT)

The exception occurs when the operation result differs from a result led out with an infinite range of

precision. The following table shows the operation results and the respective conditions in which

each IXCT occurs.

Table 4.2.3 Operation Results when an IXCT Occurred

Note 1: When the inexact exception enable (EX) bit (FPSR register bit 17) = "0"

Note 2: When the inexact exception enable (EX) bit (FPSR register bit 17) = "1"

4) Zero Division Exception (DIV0)

The exception occurs when a finite nonzero value is divided by zero. The following table shows the

operation results when a DIV0 is occurs.

Table 4.2.4 Operation Results When a DIV0 Occurred

Occurrence Condition

Operation Result (Content of the Destination Register)

When the IXCT EIT processing is

masked (Note 1)

executed (Note 2)

Overflow occurs in OVF masked

Reference OVF operation results

No change

condition

Rounding occurs

Rounded value

No change

Dividend

Operation Result (Content of the Destination Register)

When the DIV0 EIT processing is

masked (Note 1)

executed (Note 2)

Nonzero finite value

+-Infinity (Sign is derived by

No change

exclusive ORing the signs of the

divisor and dividend.)

Dividend

Behavior

An invalid operation exception occurs

Infinity

No exceptions occur (with the result = "Infinity")

32186 Datasheet(PDF) 106 Page - Renesas Technology Corp

32186 Datasheet(HTML) 106 Page - Renesas Technology Corp

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL