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ADDU Add Two Unsigned Integers Without Saturation
3-64 Instruction Set SPRU733
Example 1 ADDU .L1 A1,A2,A5:A4
Before instruction 1 cycle after instruction
A1
0000 325Ah
12890
†
A1 0000 325Ah
A2 FFFF FF12h 4294967058
†
A2 FFFF FF12h
A5:A4 xxxx xxxxh A5:A4 0000 0001h 0000 316Ch 4294979948
‡
†
Unsigned 32-bit integer
‡
Unsigned 40-bit (long) integer
Example 2 ADDU .L1 A1,A3:A2,A5:A4
Before instruction 1 cycle after instruction
A1
0000 325Ah
12890 A1 0000 325Ah
A3:A2 0000 00FFh FFFF FF12h 1099511627538
‡
A3:A2 0000 00FFh FFFF FF12h
A5:A4 0000 0000h 0000 0000h 0 A5:A4 0000 0000h 0000 316Ch 12652
‡
†
Unsigned 32-bit integer
‡
Unsigned 40-bit (long) integer