 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
TMPR4956C Datasheet(PDF) 142 Page - Toshiba Semiconductor |
|
|
|||||||||||||||||||||||||||||
TMPR4956C Datasheet(HTML) 142 Page - Toshiba Semiconductor |
|
|
142 / 286 page  Chapter 8 CPU Exception 8-14 8.14 System Call Exception 8.14.1 Cause The System Call exception occurs during an attempt to execute the SYSCALL instruction. This exception is not maskable. 8.14.2 Processing The common exception vector is used for this exception, and the Sys code in Cause register is set. If EXL bit of Status register is only set to 0, the following operation is executed. EPC register points to the address of the SYSCALL instruction. If, however, the affected instruction was in the branch delay slot (for execution during a branch), the immediately preceding branch instruction address is retained in EPC register, and BD bit of Cause register is set to 1. 8.14.3 Servicing When this exception occurs, control is transferred to the applicable system routine. To resume execution, the EPC register must be altered so that the SYSCALL instruction does not re-execute; this is accomplished by adding a value of 4 to the EPC register (EPC register + 4) before returning. If a SYSCALL instruction is in a branch delay slot, a more complicated algorithm, beyond the scope of this description, may be required. |
|
Link URL |
| Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Contact us | Privacy Policy | Link to Datasheet | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
| Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
|
Family Site : ic2ic.com |
icmetro.com |
English ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
