SW500010 Microchip Technology, SW500010 Datasheet - Page 132

• Manufacturer Part Number: SW500010
• Description: HI-TECH C PRO FOR PIC10/12/16
• Manufacturer: Microchip Technology
• Type: Compilerr
• Series: PIC10/12/16r

Specifications of SW500010

• Supported Families: PIC10, PIC12, PIC16
• Core Architecture: PIC
• Software Edition: Professional
• Kit Contents: Software And Docs
• Mcu Supported Families: PIC10/12/16
• Tool Type: Compiler
• Lead Free Status / RoHS Status: Not applicable / Not applicable
• For Use With/related Products: PIC10, PIC12, PIC14, PIC16, PIC16E
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 019P; 778-1006; 778-1006

HI-TECH C Assembly Language
4.3.8.7 DB
DB is used to initialize storage as bytes. The argument is a list of expressions, each of which will be
assembled into one byte. Each character of the string will be assembled into one memory location.
Examples:
Note that because the size of an address unit in ROM is 2 bytes, the DB pseudo-op will initialise a
word with the upper byte set to zero.
4.3.8.8 DW
DW operates in a similar fashion to DB, except that it assembles expressions into words. Example:
4.3.8.9 DS
This directive reserves, but does not initialize, memory locations. The single argument is the number
of bytes to be reserved. Examples:
4.3.8.10 DABS
This directive allows one or more bytes of memory to be reserved at the specified address. The
general form of the directive is:
where memory_space is a number representing the memory space in which the reservation will
take place, address is the address at which the reservation will take place, and bytes is the
number of bytes that is to be reserved. This directive differs to the DS directive in that it does not
allocate space at the curernt location in the current psect, but instead can be used to reserve memory
at any location.
psects. Devices with a single flat memory space will typically always use 0 as the space value;
devices with separate code and data spaces typically use 0 for the code space and 1 for the data
space.
variables that have been allocated an address by the code generator.
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The memory space number is the same as the number specified with the space flag option to
The code generator issues a DABS directive for every user-defined absolute C variable, or for
alabel: DB
DW -1, 3664h, ‘A’, 3777Q
alabel: DS 23
xlabel: DS 2+3
DABS memory_space,address,bytes
’X’,1,2,3,4,
;Reserve 23 bytes of memory
;Reserve 5 bytes of memory
Macro Assembler