@mpweiher and vc (32-bit MIPS) as the last one, here you see "HI" used as a MIPS-specific register:
TEXT main+0(SB),0,$8
MOVW j-8(SP),R7
MOVW $1,R5
JMP ,4(PC)
JMP ,2(PC)
JMP ,10(PC)
ADDU $1,R5,R5
SGT $42,R5,R2
BEQ R2,-3(PC)
MOVW $3,R6
DIV R6,R5,
MOVW HI,R3
BEQ R3,2(PC)
ADDU R5,R7,R7
JMP ,-10(PC)
MOVW R7,R1
RET ,
RET ,
END ,