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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.

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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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Rule 4: "PM Sent!" messages (or, how to use the Private Message system)

This forum has a private message feature that we want people to use for messages that are not of general interest to other members.

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Why do we have this policy? Sending a "PM Sent!" type message basically wastes everybody else's time by making them having to scroll past a post in a thread that looks to be updated, when the update is not meaningful. And the person you are sending the PM to will be notified by the forum software that they have a message waiting for them. Look up at the top near the right edge where it says 'Notifications' ... if you have a PM waiting, it will tell you there.

Rule 5: 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.


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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
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Commodore 128 and 80 Colums

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  • billdeg
    replied
    I saw a number of 1084s on Ebay recently, less tHan 100 bucks...but I get it and understand why vga is appealing. You might get away with a non cbm display like a
    magnavox or Tandy of the same period. Hope you find something useful

    Leave a comment:


  • KC9UDX
    replied
    High resolution is not the issue. Mismatched resolution is.

    There didn't really exist a standard resolution on NTSC or PAL systems. The reason is that CRTs are very forgiving, because they are more analog.

    Monochrome CRTs are truly analog, horizontally. You can successfully display any resolution until you run out of video amplifier bandwidth.

    Colour CRTs are almost so. The reason is that if a pixel doesn't precisely line up with a phosphor group, it will bleed into the next or previous.

    Truly digital displays like LCD cannot do that. If a pixel misses a pixel location, it disappears. Pixels that span multiple or fractions of pixel locations are hit or miss. That is, if an image pixel takes the space of 3.8 LCD pixels, you sometimes get 3, sometimes 4 pixels. Where this becomes very problematic is when you have image pixels that almost line up with LCD pixels. If it's 0.8 to 1, sometimes you get a pixel, sometimes you don't.

    Systems designed for analogue television displays or the likes almost always have problems with LCD "SD" TVs.

    This may or not be a serious problem with your particular hardware, and either way may not be serious enough to bother you. I have a few setups where for the application, it just doesn't matter. I have others, where it's just intolerable for my purposes.

    Leave a comment:


  • stangman517
    replied
    I'm not exactly looking for high resolution just 80 columns without having to buy a CRT. Not saying CRTs are not good; just wanting a cheap TV/VGA monitor that I can just THROW out when it breaks. CRTs are not that simple, well at least for me a non-CRT repair tech. Not trying to get 1600 x 900; just maybe 640 x 480 on a TV/VGA (inexpensive) LCD monitor. If I try the above VGA solution I'll let others know about it.

    Leave a comment:


  • stangman517
    replied
    Thanks for your comments Bill. I will see if I can find a 1084 monitor. It's just harder to find a place to put a CRT, and to find someone to fix it when necessary.

    I may try the above VGA solution - not decided yet, and now even more undecided since you posted about the 1084 monitor. The above VGA solution - brought up by AdamAnt316 - is under $100 - give or take. To find a GOOD 1084 may be slim to known????

    Leave a comment:


  • billdeg
    replied
    Glad to you hear you found a solution that suits you. I am unsure why not just use a 1084 with two cables as described above, but getting a 1084 with shipping could cost $200. Might be worth it in the long run if you use it a lot. You get everything a c-128 can offer in one monitor with the 1084.

    Leave a comment:


  • KC9UDX
    replied
    I have yet to see any modern VGA monitor that could properly display NTSC type resolutions.

    Leave a comment:


  • Trixter
    replied
    Originally posted by stangman517 View Post
    I made contact with the creator of the board/system, and will probably buy what he's got. To use the C128 on a VGA monitor is awesome!
    Let us know how that turns out. I had color issues with mine, but I was not using it as intended so my experience is an outlier.

    Leave a comment:


  • KC9UDX
    replied
    Originally posted by billdeg View Post
    I did not know I could avoid a reset.
    You were taken by that silly keyboard key.

    Leave a comment:


  • ClassicHasClass
    replied
    GRAPHIC 5 will do. (GRAPHIC 0 to switch back.)

    Leave a comment:


  • billdeg
    replied
    I did not know I could avoid a reset.

    Leave a comment:


  • gsteemso
    replied
    Just out of curiosity, why would you need to reset the machine when you want to switch between 40- and 80-column display modes? There's a BASIC 7 command for that (GRAPHIC); for syntax details see the Commodore BASIC Encyclopedia (I think it was on Hydrophilic's site?) Did you know that the 128 can be run dual-head (using both screens at once)? It's built in to the way it works that it be kinda-sorta straightforward to switch which screen is active.

    Leave a comment:


  • RobertB
    replied
    Originally posted by ClassicHasClass View Post
    I use a 1902 with my 128...
    FYI, some 1902's don't work with the Amiga's analog RGB (though they were supposed to). For the C128's digital RGB, the 1902's were fine.

    Going to the ViC 64 club of Victoria tonight,
    Robert Bernardo
    Fresno Commodore User Group
    http://www.dickestel.com/fcug.htm
    July 30-31 Commodore Vegas Expo v12 -
    http://www.portcommodore.com/commvex

    Leave a comment:


  • KC9UDX
    replied
    Originally posted by billdeg View Post
    Yes, if I was only going to pick one, I'd go with what I know works, the 1084, no -S.
    I'm pretty sure there are multiple variations of non-S 1084.

    Leave a comment:


  • ClassicHasClass
    replied
    I use a 1902 with my 128, but the 1084 is a good choice.

    Leave a comment:


  • billdeg
    replied
    Yes, if I was only going to pick one, I'd go with what I know works, the 1084, no -S.

    Leave a comment:

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