Pointers and references: Difference between revisions
Content added Content deleted
Puppydrum64 (talk | contribs) m (→Pointers) |
Puppydrum64 (talk | contribs) m (→Pointers) |
||
| Line 2: | Line 2: | ||
=={{header|6502 Assembly}}== |
=={{header|6502 Assembly}}== |
||
===Pointers=== |
===Pointers=== |
||
In most languages, a number that is an operand in an instruction, such as <code>mov ax,3</code> or <code>int x = 3;</code>, is an <i>immediate number</i>, i.e. a constant that equals the value of that number. |
In most languages, a number that is an operand in an instruction, such as <code>mov ax,3</code> or <code>int x = 3;</code>, is an <i>immediate number</i>, i.e. a constant that equals the value of that number. 6502 Assembly is different: a number <b>without</b> a # in front represents a memory address. |
||
<lang 6502asm>LDA $19 ;load the value at memory address $19 into the accumulator |
<lang 6502asm>LDA $19 ;load the value at memory address $19 into the accumulator |
||