SW500007 Microchip Technology, SW500007 Datasheet - Page 113

• Manufacturer Part Number: SW500007
• Description: PICC-18 PRO
• Manufacturer: Microchip Technology
• Type: Compilerr
• Series: PIC18r

Specifications of SW500007

• Supported Families: PIC18
• Core Architecture: PIC
• Software Edition: Professional
• Kit Contents: Software And Docs
• Mcu Supported Families: PIC18
• Tool Function: Compiler
• Tool Type: Compiler
• Lead Free Status / RoHS Status: Not applicable / RoHS Compliant
• For Use With/related Products: PIC18 Series
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 015P; 778-1002; 778-1002

Macro Assembler
Some examples of the use of the PSECT directive follow:
4.3.8.4 ORG
The ORG directive changes the value of the location counter within the current psect. This means that
the addresses set with ORG are relative to the base address of the psect, which is not determined
until link time.
The argument to ORG must be either an absolute value, or a value referencing the current psect. In
either case the current location counter is set to the value determined by the argument. It is not
possible to move the location counter backward. For example:
will move the location counter to the beginning of the current psect plus 100h. The actual location
will not be known until link time.
must be used from within an absolute, overlaid psect. For example:
4.3.8.5 EQU
This pseudo-op defines a symbol and equates its value to an expression. For example
The identifier thomas will be given the value 123h. EQU is legal only when the symbol has not
previously been defined. See also Section 4.3.8.6.
In order to use the ORG directive to set the location counter to an absolute value, the directive
PSECT fred
PSECT bill,size=100h,global
PSECT joh,abs,ovrld,class=CODE,delta=2
The much-abused ORG directive does not necessarily move the location counter to the
absolute address you specify as the operand. This directive is rarely needed in programs.
ORG 100h
PSECT absdata,abs,ovrld
thomas EQU 123h
ORG 50h
HI-TECH C Assembly Language
99