PCDIDE COMPILER Custom Computer Services Inc (CCS), PCDIDE COMPILER Datasheet - Page 64

• Manufacturer Part Number: PCDIDE COMPILER
• Description: PCD C-COMPILER PIC24, DSPIC
• Manufacturer: Custom Computer Services Inc (CCS)
• Type: Compilerr

Specifications of PCDIDE COMPILER

• For Use With/related Products: Microchip PIC24/dsPIC®
• Lead Free Status / RoHS Status: Not applicable / Not applicable
• Other names: 429-1008

#ROM directive:
Another method is to use #rom to assign data to program memory.
Built-in-Functions:
The compiler also provides built-in functions to place data in program memory, they are:
Please refer to the help of these functions to get more details on their usage and limitations regarding
erase procedures. These functions can be used only on chips that allow writes to program memory.
The compiler uses the flash memory erase and write routines to implement the functionality.
The data placed in program memory using the methods listed above can be read from width the
following functions:
These functions can be used only on chips that allow reads from program memory. The compiler
uses the flash memory read routines to implement the functionality.
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The syntax is:
For example:
- Writes count bytes of data from dataptr to address in program memory.
- Every fourth byte of data will not be written, fill with 0x00.
- Reads count bytes from program memory at address to RAM at dataptr. Every fourth
byte of data is read as 0x00
- Reads count bytes from program memory at the logical address to RAM at dataptr.
#rom address = {data, data, … , data}
Places 1,2,3,4 to ROM addresses starting at 0x1000
#rom 0x1000 = {1, 2, 3, 4}
Places null terminated string in ROM
#rom 0x1000={"hello"}
This method can only be used to initialize the program memory.
write_program_memory(address, dataptr, count);
read_program_memory((address, dataptr, count)
read_rom_memory((address, dataptr, count)