User’s Manual
39
4. S
OFTWARE
Dynamic C is an integrated development system for writing
embedded software. It runs on an IBM-compatible PC and is
designed for use with single-board computers and other devices
based on the Rabbit microprocessor.
Chapter 4 provides the libraries, function calls, and sample pro-
grams related to the BL2600.
4.1 Running Dynamic C
You have a choice of doing your software development in the flash memory or in the
static RAM included on the BL2600. The flash memory and SRAM options are selected
with the
Options > Project Options > Compiler
menu.
The advantage of working in RAM is to save wear on the flash memory, which is limited
to about 100,000 write cycles. The disadvantage is that the code and data might not both
fit in RAM.
NOTE:
On the BL2600, compiling a program to flash will produce a warning message.
You will receive an error message if you attempt to compile a program to the battery-
backed data SRAM. If you still want to compile to the battery-backed data SRAM, you
will have to comment out some code as instructed in the error message. The program
should be run from the program execution SRAM after the programming cable is dis-
connected. Your final code must always be stored in flash memory for reliable opera-
tion. Select
Code and BIOS in Flash, Run in RAM
from the Dynamic C
Options >
Project Options > Compiler
menu to store the code in flash and copy it to the fast
program execution SRAM at run-time to take advantage of the faster clock speed. This
option optimizes the performance of the BL2600 with an RCM3200 RabbitCore module
running at 44.2 MHz.
NOTE:
On the BL2610, an application can be developed in RAM, but cannot run stand-
alone from RAM after the programming cable is disconnected. Standalone applications
can only run from flash memory.
NOTE:
Do not depend on the flash memory sector size or type. Due to the volatility of
the flash memory market, the BL2600 and Dynamic C were designed to accommodate
flash devices with various sector sizes.
Summary of Contents for BL2600
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