Delta-electronics DELTA DUP-B Manual do Utilizador descarregar pdf (Página 346)

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Chapter 3 Creating and Editing Screens

$1 = NOT $0 Store the result of $1. $0 = F100H, $1 = 0EFFH.

Perform the logical NOT operation on $2, and save the result in $4 (this is an

operation of signed 32-bit data).

$4 = NOT $2 (Signed DW) Store the result of $4. $2 = F100 F100H, $4 = 0EFF 0EFFH.

 << (SHL, Logical Shift-left operation)

Equation

Var1 = Var2 << Var3

Explanation

Shift Var2 (WORD/DWORD) data to left (number of bit is Var3). The result of this

calculation is stored in Var1.

Remark

 The calculation result can be stored as WORD and DWORD.

 Var1 can be internal memory only. Var2 and Var3 can be internal memory or

constant.

Example

$0 = F100H

Shift-left 4 bits and becomes $1 = 1000H (this is an operation of unsigned 16-bit

data).

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