File:Order Switch Wiring Diagram-2.jpg and SpinAsm SOF: Difference between pages

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Order Switch Wiring Diagram-2
== SOF ==
{| class="wikitable"
|+
!Mnemonic
!Operation
!Instruction coding
|-
|SOF
|C * ACC + D
|CCCCCCCCCCCCCCCCDDDDDDDDDDD01101
|}
 
====== Description ======
SOF will multiply the current value in ACC with C and will then add the constant D to the result. Please note the absence of an integer entry format for D. This is not by mistake but it should emphasize that D is not intended to become used for integer arithmetic. The reason for this instruction is that the 11 bit constant D would be placed into ACC left justified or in other words 13 bits shifted to the left. D is intended to offset ACC by a constant in the range from –1 to +0.9990234375.
 
====== Parameters ======
{| class="wikitable"
|+
!Name
!Width
!Entry formats, range
|-
|C
|16 Bit
|Real (S1.14)
Hex ($0000 ­ $FFFF)
Symbolic
|-
|D
|11 Bit
|Real(S.10)
Symbolic
|}
 
====== Syntax ======
SOF C,D
 
====== Coding Example ======
<syntaxhighlight line="1">
Off  EQU  1.0                  ;
                                ;
; Halve way rectifier ­­­­­­­­
sof  0,0                        ; Clear ACC
rdax ADCL,1.0                  ; Read from left ADC channel
sof  1.0,Off                    ; Subtract offset
sof  1.0,Off                    ; Add offset
</syntaxhighlight>

Latest revision as of 20:54, 6 January 2023

SOF

Mnemonic Operation Instruction coding
SOF C * ACC + D CCCCCCCCCCCCCCCCDDDDDDDDDDD01101
Description

SOF will multiply the current value in ACC with C and will then add the constant D to the result. Please note the absence of an integer entry format for D. This is not by mistake but it should emphasize that D is not intended to become used for integer arithmetic. The reason for this instruction is that the 11 bit constant D would be placed into ACC left justified or in other words 13 bits shifted to the left. D is intended to offset ACC by a constant in the range from –1 to +0.9990234375.

Parameters
Name Width Entry formats, range
C 16 Bit Real (S1.14)

Hex ($0000 ­ $FFFF) Symbolic

D 11 Bit Real(S.10)

Symbolic

Syntax

SOF C,D

Coding Example
Off  EQU  1.0                   ; 
                                ; 
; Halve way rectifier ­­­­­­­­
sof  0,0                        ; Clear ACC 
rdax ADCL,1.0                   ; Read from left ADC channel
sof  1.0,Off                    ; Subtract offset 
sof  1.0,Off                    ; Add offset

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