Intel 80C196NU ユーザーズマニュアル
6-9
STANDARD AND PTS INTERRUPTS
Figure 6-2. Standard Interrupt Response Time
6.4.2.2
PTS Interrupt Latency
In both 64-Kbyte and 1-Mbyte modes, the maximum delay for a PTS interrupt is 43 state times
(4 + 39) as shown in Figure 6-3. This delay time does not include the added delay if a protected
instruction is being executed or if a PTS request is already in progress. See Table 6-4 for execution
times for PTS cycles.
(4 + 39) as shown in Figure 6-3. This delay time does not include the added delay if a protected
instruction is being executed or if a PTS request is already in progress. See Table 6-4 for execution
times for PTS cycles.
Figure 6-3. PTS Interrupt Response Time
Cleared
Set
1-Mbyte Mode 61 State Times
64-Kbyte Mode 56 State Times
A0261-02
1-Mbyte Mode
4 3 2 1
64-Kbyte Mode
11
2
12
39
6
15
3
12
39
6
Ending
Instruction
End
"NORML"
Call is
Forced
If Stack
External
"PUSHA"
Interrupt Routine
Execution
Interrupt
If Stack
External
"NORML"
4 3 2 1
Interrupt
Pending
Bit
Response
Time
64-Kbyte or 1-Mbyte Mode
Ending
Instruction
End
"NORML"
Vector to PTS
Control Block
PTS
PTS Interrupt Routine
Cleared
Set
Execution
Interrupt
Interrupt
Pending Bit
Response Time
Latency Time
"NORML"
43 State Times
64-Kbyte or 1-Mbyte Mode
PTS
A0262-02
4 3 2 1
39