Home Your Account FAQ Topics Content Submit News Top 10
  Login/Create an Account    


Amiga600_FPGA.gif Amiga FPGA Accelerator
· Introduction
· Pictures
· Voltage Level Translation
· Sharing ideas
· Who helped?New content !
· Apollo-team chat

Amiga600_FPGA.gif Vampire 600 V1
tree-L2.gif About
tree-T.gif Schematics
tree-T.gif Core
tree-L.gif Soldering
· Terms of service
· Ordering
· Core upload
· Vampire 600 map
· All News

Amiga600_FPGA.gif Vampire 600 V2

Amiga600_FPGA.gif Vampire 1200
· All News

Amiga_Ball.gif Amiga Talk Talk
· Amiga 1200 Coldfire
· Talk regarding A608
· Amiga PPC

icon_members.gif Amiga Repair
· Amiga 600 restoration
· Mouse repair
· Cold solder joint
· Amiga 600 repair
· Keyboard repair

favoritos.gif Amiga Tutorials
· Install WB from WinUAE
· Play HAM Video

som_themes.gif Amiga Testings
· Amiga 600 plays video
icon_community.gif Forum
nuke.gif Downloads
home.gif Web Hosting
som_downloads.gif Web links


Only registered users can shout. Please login or create an account.

Vampire 600 V1: Using FPGA Accelerator as Logic Analyzer
Posted on Thursday, August 23 2012 @ 13:27:08 UTC by majsta

Huge problem for me now is that I don't have any single one working Amiga 600 motherboard, so I had to repair one or two to be able to continue my work. For that job I need serious equipment that I didn't have until today. For proper repair it is not enough to just track schematics and change parts I had to "catch" signals to see it and find out what's wrong on the motherboard. For that job I needed Logic Analyzer so I created Logic Analyzer using my FPGA Accelerator board. 5 minutes job and now I have serious equipment.

1. Accelerator uses VCC from Amiga motherboard
2. JTAG -> USB connection to the PC
3. One probe from Accelerator
4. VHDL code (one part for translators, second one for probe , third for LED who depends on probe status)
In process of using this Accelerator as Logic Analyzer I realize that there is huge problem because Accelerator don't have over voltage protection and every time I accidentally "touch" 12V on Amiga motherboard I destroy Voltage Level Translator. So I needed to have some over voltage protection and after some calculations I decided that best way is to add 680 OHM resistor on input probe to limit clamp current. Now everything is working perfect.

Sponsored links

Related Links
· More about Amiga FPGA accelerator
· News by majsta

Most read story about Amiga FPGA accelerator:

Article Rating
Average Score: 5
Votes: 1

Please take a second and vote for this article:

Very Good


 Printer Friendly Page  Printer Friendly Page

 Send to a Friend  Send to a Friend

Sorry, Comments are not available for this article.
Web site powered by PHP-Nuke

All logos and trademarks in this site are property of their respective owner. The comments are property of their posters, all the rest
You can syndicate our news using the file backend.php or ultramode.txt
Web site engine's code is Copyright © 2003 by PHP-Nuke. All Rights Reserved. PHP-Nuke is Free Software released under the GNU/GPL license.
Page Generation: 0.315 Seconds