Echelon Neuron - Manual (Page 36)

Segment
Name
Usage
INITDATA For initialization data. Used by the Neuron C compiler.
RAMCODE For code and constant data that resides in off-chip RAM.
RAMFAR For data that resides in on-chip or off-chip RAM.
RAMNEAR For data that resides in on-chip or off-chip RAM. Only Neuron
3150 Chip, FT 3150 Smart Transceiver, and Series 5000 and
6000 devices support off-chip RAM. The size of the
RAMNEAR segment is 256 bytes.
ROM For code or constant data that resides in the user area of
ROM. Only Neuron 3150 Chip and FT 3150 Smart
Transceiver support a ROM user area.
SIDATA For self-identification data. Used by the Neuron C compiler.
TRANSIENT For transient code. Must be relocatable.
FLEX For segments whose name is decided with the Neuron
Assembler’s --flex command line option. This allows writing
and sharing code for resident and for transient use.
Notes:
• EEPROM: electrically erasable programmable read-only memory
• RAM: random access memory
• ROM: read-only memory
• FLEX: In Neuron Assembly, use SEG FLEX to specify a segment whose
name is determined by the --flex command line option. This option is
typically used as --flex CODE or --flex TRANSIENT, although the --flex
option supports arbitrary segment names including invalid ones. The flex
feature allows sharing of code for different targets, directed to the
appropriate segment type with the Neuron Assembler invocation.
Using Neuron Chip Memory
The following sections describe the memory maps for Neuron Chips or Smart
Transceivers with off-chip memory, and Neuron Chips or Smart Transceivers
without off-chip memory. These memory maps show how several of the segment
types relate to memory usage within the Neuron Chip or Smart Transceiver.
Chips with Off-Chip Memory
On-chip memory on the Neuron 3150 Chip and FT 3150 Smart Transceiver
consists of RAM and EEPROM. On-chip memory on a Series 5000 and 6000
device consists of RAM.
26 Neuron Architecture for Neuron Assembly Programming