eCosTM Reference Manual
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# Chapter 22. Package: I/O sub-system

#### Macro name

CYGPKG_IO

#### Type

Boolean

#### Description

The eCos system is supplied with a number of different device drivers. This option enables the basic I/O system support which is the basis for all drivers.

# Option: Debug I/O sub-system

#### Macro name

CYGDBG_IO_INIT

#### Type

Boolean

#### Description

This option enables verbose messages to be displayed on the system "diag" device during I/O system initialization.

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Package: Common error code support | Up | Package: Serial device drivers