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S12CPUV2 Reference Manual, Rev. 4.0

Freescale Semiconductor

REV

MIN-MAX rule

evaluation

Find smallest rule input (MIN)

Store to rule outputs unless fuzzy output is larger

(MAX)

Rules are unweighted

Each rule input is an 8-bit offset

from a base address in Y

Each rule output is an 8-bit offset

from a base address in Y

$FE separates rule inputs from rule outputs

$FF terminates the rule list

REV can be interrupted

REVW

MIN-MAX rule

evaluation

Find smallest rule input (MIN)

Multiply by a rule weighting factor (optional)

Store to rule outputs unless fuzzy output is larger

(MAX)

Each rule input is the 16-bit address

of a fuzzy input

Each rule output is the 16-bit address

of a fuzzy output

Address $FFFE separates rule inputs

from rule outputs

$FFFF terminates the rule list

Weights are 8-bit values in a separate table

REVW can be interrupted

WAV

Calculates numerator

(sum of products)

and denominator

(sum of weights)

for weighted average

calculation

Results are placed in

correct registers

for EDIV immediately

after WAV

WAVR

Resumes execution

of interrupted WAV

instruction

Recover immediate results from stack

rather than initializing them to 0.

Table 5-13. Fuzzy Logic Instructions (Continued)

Mnemonic

Function

Operation

iFi

∑

Y:D

⇒

∑

⇒

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