Variable size/Set: Difference between revisions

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→‎{{header|6502 Assembly}}: fixed broken code closer
m (→‎{{header|6502 Assembly}}: fixed broken code closer)
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dd 0</lang>
 
For programs that are executed solely from ROM, such as video game console cartridges, you won't be able to use the above method. The assembler can often use an <code>enum</code> or <code>rsset</code> directive to sequentially assign labels to a series of consecutive memory locations in the system's RAM.
 
<lang 6502asm>.rsset $00 ;starting at $0400, the following labels represent sequential memory locations of length ".rs n"
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tempStack .rs 1 ;$07</lang>
 
Assemblers that don't have an <code>enum</code> or <code>rsset</code> directive can use the <code>equ</code> directive instead. This method lets you immediately see what each memory location actually is, but it makes it harder to insert a new one without having to redo all the numbering. Certain 6502 instructions rely on two memory addresses being consecutive.
 
<lang 6502asm>VBlankFlag equ $00
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