參數(shù)資料
型號(hào): M32000D3FP
元件分類: 微控制器/微處理器
英文描述: 32-BIT, 66.6 MHz, RISC MICROCONTROLLER, PQFP100
封裝: 14 X 20 MM, 0.65 MM PITCH, PLASTIC, LQFP-100
文件頁數(shù): 110/155頁
文件大?。?/td> 1340K
代理商: M32000D3FP
4-22
M32000D3FP User's Manual
EIT
4.10 Trap processing
(4) Branching to the EIT vector entry
Processing branches to one of addresses H’0000 0040 - H'0000 007C in user space depending
on the TRAP instruction operand value. The M32000D3FP carries out hardware pre-processing up
to this point.
(5) Branching from the EIT vector entry to the EIT handler
The M32000D3FP executes the BRA instruction written at the relevant address H’0000 0040 -
H'0000 007C of the EIT vector entries, and branches to the top address in the EIT handler. At the
top address of the EIT handler, the BPC, the PSW register and any necessary general-purpose
registers should be saved in the stack.
(6) Returning from the EIT handler
At the end of the EIT handler, the general-purpose registers, the BPC and the PSW register should
be returned from the stack and the RTE instruction executed. When the RTE instruction is executed,
hardware post-processing is carried out automatically.
Fig. 4.10.1 Trap (TRAP) return address example
H'00
address
TRAP instruction
H'04
H'08
H'0C
+0
+1
+2
+3
H'00
address
H'04
H'08
H'0C
+ 0
+ 1
+ 2
+ 3
return
address
return
address
BPC
H'0A
BPC
H'08
TRAP instruction
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