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90 lines
1 KiB
Plaintext
90 lines
1 KiB
Plaintext
==========DIVU - Divide unsigned==========
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divu - 2 // is it seperating quotients & remainders correctly
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ori $4, $0, 4
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ori $5, $0, 3
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divu $4, $5
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mfhi $4
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mflo $5
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addu $2,$4,$5
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jr $0
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ref file = 2
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34040004
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34050003
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0085001B
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00002010
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00002812
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00851021
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00000008
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divu - 3 // check if unsigned despite MSB=1
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lui $4, $0, 0xFFFF
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ori $4, $4, 0xFFFC
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lui $5, $0, 0xFFFF
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ori $5, $5, 0xFFFE
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divu $4, $5
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mfhi $2 // look at remainder
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jr $0
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reg file = 4294967292 (0xFFFFFFFC)
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3c04FFFF
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3484FFFC
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3c05ffff
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34A5FFFE
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0085001B
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00001010
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00000008
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divu - 4 // +ve/(-ve value if signed but unsigned div here)
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ori $4, $0, 0x4
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lui $5, $0, 0xFFFF
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ori $5, $5, 0xFFFC
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divu $4, $5
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mfhi $2
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jr $0
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reg file = 4 (0x4)
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34040004
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3c05FFFF
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34A5FFFC
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0085001B
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00001010
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00000008
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divu - 5 // is it seperating quotients & remainders correctly
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lui $4, $0, 0xFF00
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ori $4, $4, 0xFF04
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lui $5, $0, 0x00FF
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ori $5, $5, 0x00FF
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divu $4, $5
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mfhi $4
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mflo $5
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addu $2,$4,$5
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jr $0
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ref file = 256 (remainder) + 4 (quotient)
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3404FF00
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3484FF04
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340500FF
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34A500FF
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0085001A
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00002010
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00002812
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00851021
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00000008
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