Echelon Neuron Bedienungsanleitung PDF herunterladen (Seite 182)

This example acquires the semaphore, then modifies a global variable, then

releases the semaphore.

import io_iaccess, io_irelease

... ; ( data -- )

callf io_iaccess ; ( data -- )

pop globalVar ; ( -- )

callf io_irelease ; ( -- )

_l_shift16 (Left Shift, 16 Bit)

This function shifts an unsigned 16-bit integer left. b must be in the range 0..7.

Stack Transformation: (a(2), b -- a(2)<<b)

Location: Near

Registers Affected: None

Example:

This example shifts 16 left 2.

pushs #d’2 ; (d’2)

pushd #d’16 ; (d’16, 0, d’2)

call _l_shift16 ; (d’64, 0)

_l_shift16s (Left Shift Signed, 16 Bit)

This function shifts a signed 16-bit integer left. b must be in the range 0..7.

Stack Transformation: (a(2), b -- a(2)<<b)

Location: Near

Registers Affected: None

Example:

This example shifts 16 left 2.

pushs #d’2 ; (d’2)

pushd #d’16 ; (d’16, 0, d’2)

call _l_shift16s ; (d’64, 0)

_l_shift8 (Left Shift, 8 Bit)

This function shifts an unsigned integer left. b must be in the range 0..7.

Stack Transformation: (a, b -- a<<b)

Location: Near

172 System-Provided Functions

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Echelon Neuron Bedienungsanleitung Seite 182