The assembler that I am using for one of my classes is limited because
it's just a java simulation, and it's not able to handle all
instructions.
It's limited to:

ADD | ADDS |			<register>, <register>, <register>
SUB | SUBS			<register>, <register>, #<literal>

MUL					<register>, <register>, <register>

LDR | STR				<register>, <label>
					<register>, [<register>], #<literal>

MOV | MVN				<register>, <register>
					<register>, #<literal>

BEQ | BNE |			<label>
BGT | BLT | BAL


Pseudo Instructions

LDR  Rn, DATAIN
STR  Rn, DATAOUT
EXIT
MEMDUMP
REGDUMP

I'm trying to create a selection sort with just that. From all of our
examples, we use LDRB - which is not supported by the simulator. I
also needed ADR but found:

LDR R2, POINTER
...
POINTER DCD NUM1

or 

ADD Rd, R15, #offset

was equivalent.

Think anyone can help me with LDRB?