82C836 Datasheet, PDF (108/205 Pages) List of Unclassifed Manufacturers – Single-Chip 386sx AT

s I/O Address Maps
Address Maps
Table 9-2. Interrupt Controller I
I/O Address
0020H
0021H
Read/Write
Write
Write
Read
Read
Read
Write
Write
Write
Write
Read
Description
INTC ICW1
INTC OCW2, OCW3
INTC Interrupt Request Register (IIR)
INTC In-Service Register (ISR)
INTC Polling Data Byte
INTC ICW2
INTC ICW3
INTC ICW4
INTC OCW1
INTC Interrupt Mask Register (IMR)
Table 9-3. Internal Configuration Registers
I/O Address
0022H
0023H
Read/Write
W/O
R/W
Description
Internal Configuration Register Index
(See Table 9-4.)
Internal Configuration Register Data
9-2 Revision 3.0
PRELIMINARY
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