RedBoot User's Guide
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iopeek

Name

iopeek -- Read I/O location

iopeek [-b location] [-1 | -2 | -4]

Name	Type	Description	Default
-b `location`	I/O address	I/O Location.	none
-1		Access a one byte (8 bit) I/O location.	-1
-2		Access a two byte (16 bit) I/O location.	-1
-4		Access a one word (32 bit) I/O location.	-1

Reads a value from the I/O address space.

Examine 8 bit value at I/O location 0x3F8.

 
RedBoot> iopeek -b 0x3f8
0x03f8 = 0x30

Examine 32 bit value at I/O location 0x3f8.

 
RedBoot> iopeek -b 0x3f8 -4
0x03f8 = 0x03c10065

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