CCS C Compiler Manual PCB / PCM / PCH

PreProcessor
#rom
Syntax:
Elements:
Purpose:
#ROM address = {list}
#ROM type address = {list}
address is a ROM word address, list is a list of words separated by commas
Allows the insertion of data into the .HEX file. In particular, this may be used to
program the '84 data EEPROM, as shown in the following example.
Note that if the #ROM address is inside the program memory space, the
directive creates a segment for the data, resulting in an error if a #ORG is over
the same area. The #ROM data will also be counted as used program memory
space.
The type option indicates the type of each item, the default is 16 bits. Using
char as the type treats each item as 7 bits packing 2 chars into every pcm 14-bit
word.
When linking multiple compilation units be aware this directive applies to the
final object file.
Some special forms of this directive may be used for verifying program memory:
#ROM address = checksum
This will put a value at address such that the entire program memory will
sum to 0x1248
#ROM address = crc16
This will put a value at address that is a crc16 of all the program memory
except the specified address
#ROM address = crc8
This will put a value at address that is a crc16 of all the program memory
except the specified address
Examples:
Example Files:
Also See:
#rom getnev ("EEPROM_ADDRESS")={1,2,3,4,5,6,7,8}
#rom int8 0x1000={"(c)CCS, 2010"}
None
#ORG
127