ST20C4 datasheet(79/212 Pages) STMICROELECTRONICS

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enbt

79/212

enbt

enable timer

Code: 24 F7

Description: Enable a timer guard in an alternative sequence. Areg is the boolean

guard and Breg is the time after which the guard may be selected. Note that this

instruction should only be used as part of an alternative sequence following a

talt

instruction; in this case the location pw.State will have been initialized to

Enabling.p

and the pw.Tlink slot initialized to

TimeNotSet.p.

Definition:

if (Areg

≠ false)

{

if (word[Wptr @ pw.TLink]

= TimeNotSet.p)

–

this is the first enbt

{

word

′[Wptr @ pw.TLink]

← TimeSet.p

word

′[Wptr @ pw.Time]

← Breg

}

else if (word[Wptr @ pw.TLink]

= TimeSet.p)

–

this is not the first enbt

{

if (word[Wptr @ pw.Time] after Breg)

–

this enbt has earlier time

word

′[Wptr @ pw.Time] ← Breg

}

Breg

′← Creg

Creg

′← undefined

Error signals: none

Comments:

Secondary instruction.

ST20C4 Datasheet(PDF) 79 Page - STMicroelectronics

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