RedBoot User's Guide
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iopeek

Name

iopeek -- Read I/O location

Synopsis

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

Arguments

NameTypeDescriptionDefault
-b locationI/O addressI/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

Description

Reads a value from the I/O address space.

Examples

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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