Tseng ET4000AX ISA vga jumpers question \ VOGONS

Tseng ET4000AX ISA vga jumpers question

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First post, by keropi

Posted on 2016-09-29, 21:15

keropi Offline

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Hiya!

I acquired this TSENG ET4000AX ISA vga:

Anyone knows what the 3 jumpers do? 😕

TIA for any help/ideas! 😊

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Reply 1 of 3, by PhilsComputerLab

Posted on 2016-09-29, 21:54

PhilsComputerLab Offline

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Had a look on th99, but I'm sure you already checked.

One jumper is always for IRQ2 enable or disable. There might be one for putting the card into 8 bit more. Or one for Wait State or Turbo. Mine has DIP switches to set refresh rates also.

I can only guess, but the jumper at the bottom near the ISA is likely the IRQ jumper. It's usually always closed.

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Reply 2 of 3, by keropi

Posted on 2016-09-29, 22:05

keropi Offline

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I could not find anything specific , I guess I'll have to do some testing 😀
Thanks for the help Phil

Reply 3 of 3, by PhilsComputerLab

Posted on 2016-09-29, 22:07

PhilsComputerLab Offline

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Yea some of these cards are not documented. What I do is do my research before buying 😁

Also note the many jumpers that don't have headers! Who knows what things you could change.

That's why I like the Diamond Speedstar 24x so much. It's well documented.

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