RTE-V852-PC
USER’ S MANUAL (Rev. 1.10)
35
6.12. INT0(P22/INTP01) SELECT PORT (3F-F200H)
This port controls the generation of the INT0(P22/INTP01) signal. See Section 9.3 for details of the
INT0 signal generation logic.
Address
Bit7 Bit6 Bit5
Bit4 Bit3
Bit2
Bit1
Bit0
3F-F200H
----
----
----
----
----
PRT_INT0EN
ISACON_INT0EN
UART1_INT0EN
Set each bit to “ 1” to generate INT0(P22/INTP01) according to the corresponding interrupt request,
or to “ 0” when it need not be generated.
UART_INT0EN:
Interrupt request issued by UART-CH#1 of TL16C552A
ISACOM_INT0EN:
Interrupt request based on communication with ISA bus
PRT_INT0EN:
Interrupt request issued by PRINTER of TL16C552A
6.13. INT1 (P24/INTP03) SELECT PORT (3F-F210H)
This port controls the generation of the INT1 (P24/INTP03) signal. See Section 9.3 for details of the
INT0 signal generation logic.
Address
Bit7 Bit6 Bit5 Bit4 Bit3
Bit2
Bit1
Bit0
3F-F210H
----
----
----
----
----
Reserved (0)
TOVER_INT1EN
TIMER_INT1EN
Set each bit to “ 1” to generate INT1 (P24/INTP03) according to the corresponding interrupt request,
or to “ 0” when it need not be generated.
TIMER_INT1EN:
Interrupt request issued by TOUT0 of
µ
PD71054
TOVER_INT1EN: Interrupt request resulting from time-over ready occurrence
Reserved (0):
This bit is reserved and should be set to “ 0” .
6.14. INT0(P22/INTP01) STATUS PORT (3F-F220H [READ ONLY])
This port is used to identify the source of an INT0(P22/INTP01) request. See Section 9.3 for details
of the INT0 signal generation logic.
Address
Bit7 Bit6 Bit5 Bit4 Bit3
Bit2
Bit1
Bit0
3F-F220H
----
----
----
----
----
PRT_INT0
ISACON_INT0
UART1_INT0
Each bit is set to “ 1” when INT0 is generated by the corresponding interrupt request, or set to “ 0”
when it is not generated. Each bit represents the interrupt request status of each interrupt request
source and is not affected by the settings of the INT0 enable port. Therefore, the interrupt factor
causing the INT0 occurrence can be identified by ANDing the information in the INT0 status port with
that in the INT0 select port.
UART1_INT0:
Interrupt request issued by UART-CH#1 of TL16C552A
ISACOM_INT0:
Interrupt request based on communication with ISA bus
PRT_INT0:
Interrupt request issued by PRINTER of TL16C552A
