You would use the LDR instruction to load the word from RAM. So just one instruction, but with some slower memory access. When writing ARM assembly, the assemb

You would use the LDR instruction to load the word from RAM. So just one instruction, but with some slower memory access. When writing ARM assembly, the assembler (at least the ones I've seen) abstract this detail away from you. You can use ldr r0, =0xff000000 and the assembler will emit a MOV if it can, and if it can't it will put the value somewhere in RAM and use LDR to load it up. ARM is fun.