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virtualtap's Introduction

VirtualTap

I (furrtek) do not make these anymore ! If you have questions or issues with your kit, please contact the seller.

Virtualtap pcb picture

  • doc: Installation manuals.
  • logic: Verilog sources, pin assignments and bitstream files for NTSC and VGA versions.
  • pcb: Schematics, BOM and GERBER files.
  • servo_emu: AVR firmware and hookup guide for servo emulator.

What it is

A small mod board made to be plugged inside a Nintendo Virtualboy unit to make it output standard VGA or NTSC RGB video.

What this is

All the necessary files to make, assemble, and program the board yourself. Please respect the LICENSE :3

How it works

The signals sent to one of the Virtualboy's displays are tapped and level-translated to 3.3V for processing by a CPLD clocked at 40MHz. It interleaves the writes to a parallel SRAM chip (framebuffer) with reads to output the rotated frame one pixel at a time to three 2-bit R-2R DACs according to the selected palette. The voltages and the generated sync signal are fed to a 4-channel THS7373 video amp for final output to whatever socket the user wishes to use.

Servo emulator

This is only useful if you wish to consolize your VirtualBoy and get rid of the mechanical parts to make it smaller.

The servo emulator makes the VirtualBoy think the eye displays are still there and working properly. Without it, the games won't start.

You only need to program a cheap microcontroler with this code and wire it up to your VirtualBoy's main board.

Porting the code to the Arduino Nano or other small AVR boards should be pretty straightforward.

virtualtap's People

Contributors

furrtek avatar itslemcy avatar

Stargazers

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Watchers

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virtualtap's Issues

Hex not working - solution found

Hi @furrtek , the hex file does not work if flashed via a tl866 or an arduino, so i recompiled it and created another one that works. This new file has been flashed multiple times on an attiny25 via the tl866ii plus without any issues. Check out my fork if you find it useful.

TTL Csync

Hello,

Is it possible to have the virtualtap output TTL csync?

X1 Crystal on Tester

Looking at the schematic for the Tester, for X1, I dont see any information other than "crystal." When looking to order online, I see there are different options for crystals As far as the frequency. I was wondering if there ia any specific crystal you used, that you could share. Thank you.

Capacitor C1-C8

Hello,

Capacitors,8,C1-C8,100nF,0603 100nF MLCC,CGB3B3X5R1E474K055AB

This is showing 100nf, but the SKU is 0.47uf.

Assume it should be 100nf instead from what I saw in the schematic?

Do you have a SKU you'd recommend?

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