Zafar Ullah Scenix Semiconductor Inc. BINARY 7-SEG CONVERTER

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Zafar Ullah Scenix Semiconductor Inc. BINARY 7-SEG CONVERTER

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BINARY 7-SEGMENT CONVERTER
Zafar Ullah Scenix Semiconductor Inc.
BINARY 7-SEG CONVERTER
SX28
COMMON ANODE
Truth Table:
simple table lookup method implemented this binary 7-seg converter. code reads binary input through ports, reads table output value through port turn on/off LEDs. This design used hp's HDSP 7301 LED, which common anode type. truth table above shows input-output relationship implement this converter with this LED.
Binary Seven-Segment Display Routine Author:Zafar Ullah Written: 98/7/30 ;****** Assembler directives uses: SX28AC, pages program memory, banks RAM, high speed ;osc. operating turbo mode, with 8-level stack extended option reg. DEVICE pins28,pages2,banks8,oschs DEVICE turbo,stackx,optionx 'Seven-Se' ;program label RESET reset_entry ;set reset/boot address FREQ 100h Program execution begins here power-up after reset reset_entry :LOOP #$0F CALL CHECK_TABLE :LOOP CHECK_TABLE PC+W Look table Read Port Masking significant bits look table Output value port #$0F !RB, #$FF !RC, #$00 ;set mode registar. Port Input port Output 50000000
RETW

Zafar Ullah Scenix Semiconductor Inc. BINARY 7-SEG CONVERTER

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