memory.h File Reference

Default memory layout. More...

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Defines
#define	NUTMEM_SIZE   4096
	Number of bytes available in fast data memory.
#define	NUTMEM_START   0x100
	First address of fast data memory.
#define	NUTMEM_RESERVED   64
	Number of bytes reserved for special purposes.
#define	NUTXMEM_SIZE   28416
	Number of bytes available in extended data memory.
#define	NUTXMEM_START   0x1100
#define	NUTBANK_COUNT   0
	Number of memory banks.
#define	NUTBANK_START   0x8000
	Start address of memory banks.
#define	NUTBANK_SIZE   0x4000
	Size of a single memory bank.
#define	NUTBANK_SR   0xFF00
	Address of the bank select register.
#define	ARTHERCPLDSTART   0x1100
#define	ARTHERCPLDSPI   0x1200

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Detailed Description

Default memory layout.

$Log$ Revision 1.1 2004/08/25 10:56:10 haraldkipp More general memory layout definitions moved from cfg/bankmem.h to cfg/memory.h.

Values can be changed by the configurator.

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Define Documentation

#define NUTMEM_SIZE   4096

Number of bytes available in fast data memory.

On most platforms this value specifies the total number of bytes available in RAM.

On Harvard architectures this value specifies the size of the data memory. It will be occupied by global variables and static data. Any remaining space will be added to the Nut/OS heap during system initialization.

#define NUTMEM_START   0x100

First address of fast data memory.

#define NUTMEM_RESERVED   64

Number of bytes reserved for special purposes.

Right now this is used with the AVR platform only. The specified number of bytes may be used by a device driver when the external memory interface is disabled.

#define NUTXMEM_SIZE   28416

Number of bytes available in extended data memory.

#define NUTXMEM_START   0x1100

#define NUTBANK_COUNT   0

Number of memory banks.

For systems without banked memory this is set to zero. Ethernut 2 has 30 memory banks.

Referenced by NutSegBufInit(), NutSegBufReadCommit(), NutSegBufReadLast(), NutSegBufWriteCommit(), and NutSegBufWriteLast().

#define NUTBANK_START   0x8000

Start address of memory banks.

For systems without banked memory this is ignored.

Referenced by NutSegBufInit().

#define NUTBANK_SIZE   0x4000

Size of a single memory bank.

For systems without banked memory this is ignored.

Referenced by NutSegBufInit().

#define NUTBANK_SR   0xFF00

Address of the bank select register.

For systems without banked memory this is ignored.

#define ARTHERCPLDSTART   0x1100

#define ARTHERCPLDSPI   0x1200