Assembler Directives

processed:
AORG <address>       defines the start address of (a piece of) a program.
EQU <label> <value>  Assignes a label to a value (decimal or hex), a register or peripherial register.
BYTE <constant>      Defines a single-byte constant. Only one per line.
DATA <constant>      Defines a two-byte constant. Only one per line.
TEXT '<string>'      Defines a string of arbitrary length. Only printable characters are allowed.
BSS <value>          Reserves block of memory. An optional label is assigned to the first byte of the block.
BES <value>          Reserves block of memory. An optional label is assigned to the first byte _after_ the block.
*                    Comment character
END

ignored:
TITL
IDT
PAGE

LABELs              Should have an opcode on the same line.