VGA1306 (VGA-out for DIY Arduboys implemented on an FPGA!)


(SkyBlue) #143

hi guys. first of all, @uXe: thank you for your work and share it with all of us.

I have bought the same FPGA board as @Mpiazza and I have downloaded the source code for the DMG from your github but I am newbie.

I have Quartus Prime Lite installed and I have working the board with some examples (blinking led…) but I don’t know how I have to modify your source code to get it working in this board.

I figure out that I should reassign pins in the .pcf file and change the CLK speed but because this board run at 48Mhz but I don’t know how exactly do that.

If you guys could help me I would be very grateful.


#144

@skyblue - will PM you!


#145

Hi all !
Hi uXe, congrats for your work !!!
Just tested DMG VGA and all works fine.:smile:


One question : witch ohm value do you use for output.
I use 100R for HSYNC and VSYNC and 500R for RGB.
Now I need to find a working Game Boy, this one have bad cartridge connector and the other one is my old made in Japan Game Boy :heart_eyes:
After that I’ll try to add second RGB bits for expanding palette and use grey values.


#146

Looking good :slight_smile:

I used 82.5Ω for H/V sync and 270Ω for RGB - what is the FPGA board you are using?


#147

It’s a cheap EP2C5 board : https://www.ebay.fr/itm/ALTERA-FPGA-Cyslonell-EP2C5T144-Minimum-System-Learning-Board-Development-Board/263454705863?hash=item3d571fc8c7:g:yMwAAOSwMGVaZyr9:rk:48:pf:0
Minimal board but really cheap and a lot of I/O :yum: