FPGArt Painting with an FPGA Niklas Rother, Rebecca Cramer, Tim - - PowerPoint PPT Presentation

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Jul 11, 2023 294 likes •403 views

FPGArt Painting with an FPGA Niklas Rother, Rebecca Cramer, Tim Oberschulte 23.03.2017 1 / 10 Contents Task Implementation What we learned... Statistics Demo 2 / 10 Task Create a painting application on an FPGA Use a PS/2 Mouse

SLIDE 1

FPGArt

Painting with an FPGA Niklas Rother, Rebecca Cramer, Tim Oberschulte 23.03.2017

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SLIDE 2

Contents

Task Implementation What we learned... Statistics Demo

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SLIDE 3

Task

◮ Create a painting application on an FPGA ◮ Use a PS/2 Mouse for input and VGA for output ◮ Implement it completely in hardware (no softcore processor)

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SLIDE 4

Module overview

Drawing Logic SRAM Controller VGA Output SRAM Clear PS/2 Protocol PS/2 Communication

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SLIDE 5

Graphic pipeline

counter ctl h v mem addr palette

verlay

SRAM show palette show overlay cursor inside LUT INV R′ G ′ B′ R G B 5 / 10

SLIDE 6

Real hardware

Working with real hardware discloses real world problems... The pull-up resistor on the board is not fast enough for pulling the PS/2 clock lane up in one cycle at 40 MHz. Clock Output Input

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SLIDE 7

Hazards happen

Hazards happen – so better buffer all input signals... FSM fed by an unbuffered input signal, behaving unpredictable (being in two states at the same time).

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SLIDE 8

Statistics (without overlay)

Family: Cyclone II Device: EP2C35F672C6 Total logic elements: 1,690 / 33,216 (5 %) Total combinational functions: 1,683 / 33,216 (5 %) Dedicated logic registers: 225 / 33,216 (< 1 %) Total registers: 225 Total pins: 99 / 475 (21 %) Total memory bits: 0 / 483,840 (0 %) Embedded Multiplier 9-bit elements: 4 / 70 (6 %) Total PLLs: 1 / 4 (25 %)

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SLIDE 9

Statistics (with overlay)

Family: Cyclone II Device: EP2C35F672C6 Total logic elements: 4,634 / 33,216 (14 %) Total combinational functions: 4,626 / 33,216 (14 %) Dedicated logic registers: 225 / 33,216 (< 1 %) Total registers: 225 Total pins: 99 / 475 (21 %) Total memory bits: 0 / 483,840 (0 %) Embedded Multiplier 9-bit elements: 4 / 70 (6 %) Total PLLs: 1 / 4 (25 %)

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SLIDE 10

DEMO

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