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Intel386™ EX EMBEDDED MICROPROCESSOR USER’S MANUAL
D-8
D.3 CS
n
ADH (UCSADH)
Chip-select High Address
CS
n
ADH (n = 0–6), UCSADH
(read/write)
Expanded Addr:
ISA Addr:
Reset State:
F402H, F40AH
F412H, F41AH
F422H, F42AH
F432H, F43AH
—
0000H (CS
n
ADH)
FFFFH (UCSADH)
15 8
———— ——CA15CA14
7 0
CA13 CA12 CA11 CA10 CA9 CA8 CA7 CA6
Bit
Number
Bit
Mnemonic
Function
15–10 — Reserved; for compatibility with future devices, write zeros to these bits.
9–0 CA15:6 Chip-select Channel Address Upper Bits:
Defines the upper 10 bits of the channel’s 15-bit address. The address
bits CA15:6 and the mask bits CM15:6 form a masked address that is
compared to memory address bits A25:16 or I/O address bits A15:6.