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Add equ explanation

Jesse Weaver 2018-01-04 00:04:47 -07:00
parent 029c0a10da
commit 57d94c6019
1 changed files with 21 additions and 1 deletions
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22
Assembler-directives.md

@ -1,4 +1,24 @@
TODO: # equ
The `equ` directive allows you to give a name to certain special values. This code:
INT_LEGS equ 0x0001
LEGS_SET_DIRECTION equ 0x0001
NORTH equ 0x0000
MOV A, LEGS_SET_DIRECTION
MOV B, NORTH
HWI INT_LEGS
translates to:
MOV A, 0x0001
MOV B, 0x0000
HWI 0x0001
but is much easier to understand.
# TODO:
labels labels
equ equ
dup dup