Figure 1. sext8
Description
This instruction sign-extends a byte (8 bits) into a word (32 bits). Bit 24 in rA will be copied into bits 0-23 of rD. Bits 24-31 in rA will be copied into bits 24-31 of rD.
Pseudocode
(rD)[0:23] ← (rA)[24]
(rD)[24:31] ← (rA)[24:31]Registers Altered
- rD
Latency
- 1 cycle