<code>R15</code> points to the stack frame and should typically only be accessed using the
virtual registers <code>SP</code> and <code>FP</code>.
</p>

<p>
Load- and store-multiple instructions operate on a range of registers.
The range of registers is specified by a start register and an end register.
For example, <code>LMG</code> <code>(R9),</code> <code>R5,</code> <code>R7</code> would load