Our mission ...
This forum is part of our mission to promote the preservation of vintage computers through education and outreach. (In real life we also run events and have a museum.) We encourage you to join us, participate, share your knowledge, and enjoy.
This forum has been around in this format for over 15 years. These rules and guidelines help us maintain a healthy and active community, and we moderate the forum to keep things on track. Please familiarize yourself with these rules and guidelines.
Remain civil and respectful
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Stay close to the original topic being discussed
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Contribute something meaningful
To put things in engineering terms, we value a high signal to noise ratio. Coming here should not be a waste of time.
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"PM Sent!" messages (or, how to use the Private Message system)
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Copyright and other legal issues
We are here to discuss vintage computing, so discussing software, books, and other intellectual property that is on-topic is fine. We don't want people using these forums to discuss or enable copyright violations or other things that are against the law; whether you agree with the law or not is irrelevant. Do not use our resources for something that is legally or morally questionable.
Our discussions here generally fall under "fair use." Telling people how to pirate a software title is an example of something that is not allowable here.
Reporting problematic posts
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If you are unsure you may consider sending a private message to a moderator instead.
New user moderation
New users are directly moderated so that we can weed spammers out early. This means that for your first 10 posts you will have some delay before they are seen. We understand this can be disruptive to the flow of conversation and we try to keep up with our new user moderation duties to avoid undue inconvenience. Please do not make duplicate posts, extra posts to bump your post count, or ask the moderators to expedite this process; 10 moderated posts will go by quickly.
New users also have a smaller personal message inbox limit and are rate limited when sending PMs to other users.
Other suggestions
- Use Google, books, or other definitive sources. There is a lot of information out there.
- Don't make people guess at what you are trying to say; we are not mind readers. Be clear and concise.
- Spelling and grammar are not rated, but they do make a post easier to read.
Chuck(G) started a blog post Cloning a PAL/HAL (Part 1)
Some spot sources still carry the Xilinx XC9500 devices in 5V versions as well.
Parallel port programmers for both are very easy to throw together.
However, the market on "jellybean" 5V logic is sunsetting, particularly as device geometries get smaller. The small 90 nm processes being used today just won't support 5V operation.