PIC18F4550 · Web Simulator

Full ISA · GPIO · UART · ADC · I2C · PWM

⚡ Vibecoded by Sk Aslam Ali

▶ Load Example

Source — PIC18 Assembly0 words

Not assembled.

Ready. Click a line number to set a breakpoint.

📈 Logic Analyzer & Oscilloscope

CH1: Pos:

CH2: Pos:

CH3: Pos:

Trigger:

Time/Div:

UART Serial Monitoridle

Hex mode Append CR (0x0D)

Virtual Board — DIP-40 0 cyc · 0 µs

LED (lit when pin driven high & TRIS = output) Button (active-low, hold to press) Temp Sensor (ADC channel) Potentiometer (ADC channel) Servo Motor (PWM input)

CPU State

W (WREG)

0x00

0x0000

BSR

0x00

PRODH:L

0x0000

Cycles

Elapsed (@4MHz)

0 µs

Est. Current

0.5 mA

start len

Watches

No active watches.

Execution Trace (last 50 instructions)

Execution Timeline: Main ISR High ISR Low

PC	Opcode	Cycles	WREG	N Z C DC OV

Live Machine Code (Hex / Binary Preview) —

Line	Address	Mnemonic	Operand	Hex	Binary Preview

Simplified encoding for teaching purposes — shows how each instruction maps to a fixed-width word, not byte-accurate PIC18 silicon opcodes.

Call Stack

empty

FSR Pointers