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Multiply Signed 16 LSB x Signed 16 MSB With Left Shift and Saturation SMPYLH
3-225 Instruction SetSPRU733
Example SMPYLH .M1 A1,A2,A3
Before instruction 2 cycles after instruction
A1
0000 8000h
−32768
‡
A1 0000 8000h
A2 8000 0000h −32768
†
A2 8000 0000h
A3 xxxx xxxxh A3 7FFF FFFFh 2147483647
CSR 0001 0100h CSR 0001 0300h Saturated
†
Signed 16-MSB integer
‡
Signed 16-LSB integer