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Instruction Set Comparison Table
B-36
Syntax
Description5x2xx2x1x
ZALR
dma
ZALR {
ind
} [
, next ARP
]
√
√
√
√
√
√
Zero Low Accumulator, Load High Accumulator
With Rounding
Load the contents of the addressed data-memory
location into the 16 MSBs of the accumulator. The
value is rounded by 1/2 LSB; that is, the 15 LSBs of the
accumulator (0–14) are cleared and bit 15 is set to 1.
ZALS
dma
ZALS {
ind
} [
, next ARP
]
√
√
√
√
√
√
√
√
Zero Accumulator, Load Low Accumulator With
Sign Extension Suppressed
Load the contents of the addressed data-memory
location into the 16 LSBs of the accumulator. The 16
MSBs are zeroed. The data is treated as a 16-bit
unsigned number.
ZAP
√
Zero the Accumulator and Product Register
The accumulator and product register are zeroed. The
ZAP instruction speeds up the preparation for a repeat
multiply/accumulate.
ZPR
√
Zero the Product Register
The product register is cleared.