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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.
Figure 6-3. PTS Interrupt Response Time
ClearedSet
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 1239 6
15 3 1239 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
ClearedSet
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