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GPIO Simulation

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PIC16F84A PDIP/SOIC RA2 1 RA3 2 RA4 3 MCLR 4 VSS 5 RB0 6 RB1 7 RB2 8 RB3 9 RB4 10 RB5 11 RB6 12 RB7 13 VDD 14 OSC2 15 OSC1 16 RA0 17 RA1 18
Click an input pin to toggle its state (HIGH/LOW). Pin modes are controlled by assembly code (TRIS registers). Gray pins are power/clock pins.

Breakpoints

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Breakpoints: 0
No breakpoints set

User Registers

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No custom registers defined

Interrupt Table

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Seven Segment Display

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PORTB Mapping:

RB0 → Segment A
RB1 → Segment B
RB2 → Segment C
RB3 → Segment D
RB4 → Segment E
RB5 → Segment F
RB6 → Segment G
RB7 → Decimal Point
0

LED Array

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LED Configuration:

All LEDs connected to PORTB

Switch Array

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Switch Configuration:

All switches connected to PORTA

Flag Table

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Stack Viewer

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Memory Viewer

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RAM Memory (68 bytes)
Flash Memory (1,024 words)
Special Function Registers