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Thread: Video Seven VGA

  1. #1

    Default Video Seven VGA

    Hello all.

    I received a Video Seven VGA card from eBay and cosmetically it looks great. However I get nothing on my VGA monitor when powering up the computer. Typically I'd see the monitor show signs of life when first powering up, but not with this Video Seven card.

    I checked the FCC Id against the one on minuszerodegrees and it matches: http://www.minuszerodegrees.net/5150/vga/5150_vga.htm I know the MB (5150 series B with the newest BIOS) has its dip switches set correctly because I pulled a HERCULES GB500 VGA 8 BIT ISA ADAPTER from my 5150 to test this Video Seven card. I also verified the switches on the Video Seven card match what's in the above link.

    What I did notice is the author wrote "ou must not assume that all Video Seven VEGA VGA cards work in a 5150. It could be, for example, that a design change in later revisions of the card results in 5150 incompatibility." I noticed on the card I received the white label on the chip has different numbers as if mine is newer because the number(s) is higher. Plus in the author's image of the card I do not know what XT slot 8 means.

    I have attached a pic of my card. If anyone has any ideas I would be greatly appreciative, and what does XT slot 8 mean?

    Thank you!VideoSeven1.jpg

  2. #2
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    Quote Originally Posted by stangman517 View Post
    what does XT slot 8 mean?
    The XT, as in the IBM PC/XT 5160, has 8 ISA slots, where the 8th slot (the one next to the keyboard connector, so the leftmost slot when looking from the back of the case) has slightly different timing and signaling from the others. So not all cards will work.
    See here: http://www.minuszerodegrees.net/5160...160_slot_8.htm

    I see a jumper on your card... It could be a 'slot 8' jumper? Apparently VEGA cards had that. Perhaps it's set to slot 8 mode, and therefore it won't work in your 5150. You could try the jumper in the other position to see if that helps.
    Last edited by Scali; January 15th, 2015 at 04:08 AM.

  3. #3

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    Spencer, the 5150 doesn't have a slot 8. (It only has 5 slots.) Only the 5160 has that feature.
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  4. #4

    Default

    Ok.
    I'll try putting the jumper in the other position. Hope it works; just wanted a backup VGA card to my Hercules.

    Thanks!

  5. #5
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    Quote Originally Posted by stangman517 View Post
    Ok.
    I'll try putting the jumper in the other position. Hope it works; just wanted a backup VGA card to my Hercules.

    Thanks!
    You should also check the dip switches, I thought there was a manual for a similar card online, but it turned out to be an EGA card from V7, so the dipswitches may have different meaning.
    This is a picture of a similar one, configured for a 5150... You could try setting the dip switches the same: http://www.minuszerodegrees.net/rom/..._62L1989V5.jpg

    I know I have a Paradise 8-bit VGA card, that has multisync and fixed frequency on one of its switches. My LCD monitor only gets an image from one of the settings, even though I'm quite sure it worked on a real multisync monitor in the past. Could be a limitation of modern LCD technology.
    Last edited by Scali; January 15th, 2015 at 05:26 AM.

  6. #6

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    Hey, if you're not getting anywhere with it in VGA mode, try it in EGA mode. That might tell us something.
    ☀☀☀ Visit Take Another Step for both computer and non-computer related discussions. ☀☀☀

    If you're looking for DS/DD or DS/HD 3" or 5" floppy disks, PM me. I've got some new, used, and factory over-labeled disks for sale.

    There is a crack in everything. That's how the light gets in. -- Leonard Cohen

  7. #7

    Default

    Hello Scali and Stone!

    I'll try it tonight when I get home. The link to the manual doesn't apply to my card, BUT it did provide a good tidbit, so I think you are on to something with the jumper block set to slot-8. This manual says to jumper pins 1 & 2 for slot-8 option and to jumper pins 2 & 3 to disable slot-8 option. And I did use the link on minuszerodegrees to set the dip switch settings.

    So can y'all tell me if this is a VGA card as well as EGA? The eBay auction list it as "Video Seven D2A62L1989V5 8 BIT ISA Card EGA VGA 600-0102." If I can't get it to work then I can send it back on the premise the auction representation was wrong. I'd really like to have another one of the Hercules card I have that's great. Plus I tested it (HERCULES GB500 VGA 8 BIT ISA ADAPTER ) with an VGA LCD monitor and it displayed beautifully.

    Thanks

  8. #8

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    Quote Originally Posted by stangman517 View Post
    So can y'all tell me if this is a VGA card as well as EGA?
    Why do you think I said to try it in EGA mode? It's got both connectors and the instructions explain how to set it up for either mode.

    http://museum.ttrk.ee/th99/v/U-Z/52859.htm
    Last edited by Stone; January 15th, 2015 at 07:11 AM.
    ☀☀☀ Visit Take Another Step for both computer and non-computer related discussions. ☀☀☀

    If you're looking for DS/DD or DS/HD 3" or 5" floppy disks, PM me. I've got some new, used, and factory over-labeled disks for sale.

    There is a crack in everything. That's how the light gets in. -- Leonard Cohen

  9. #9
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    Quote Originally Posted by stangman517 View Post
    So can y'all tell me if this is a VGA card as well as EGA?
    Yes, I think it is this: http://museum.ttrk.ee/th99/v/U-Z/52859.htm
    All VGA cards are also EGA cards in the sense that they're backward-compatible. But this particular card also has a 9-pin output for an EGA monitor, which is a rather uncommon feature.
    So as you can see, the dipswitches can select the monitor. If they are set to the wrong output, you won't see anything (best would be to connect a monitor to both and see what it does ).
    It seems to be a variation of the second card in this document: http://www.thecomputerarchive.com/ar...deo%20card.PDF

  10. #10

    Default

    Quote Originally Posted by Scali View Post
    All VGA cards are also EGA cards in the sense that they're backward-compatible. But this particular card also has a 9-pin output for an EGA monitor, which is a rather uncommon feature.
    That's *hardly* the case. Aside from this Video 7 card, Oak, Ati, Everex, Prism, Twinhead and Genoa made them. There were also quite a few others that were manufactured under various names with Trident chips. I wouldn't call that rare.
    ☀☀☀ Visit Take Another Step for both computer and non-computer related discussions. ☀☀☀

    If you're looking for DS/DD or DS/HD 3" or 5" floppy disks, PM me. I've got some new, used, and factory over-labeled disks for sale.

    There is a crack in everything. That's how the light gets in. -- Leonard Cohen

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