MT-32 slowing down? \ VOGONS

MT-32 slowing down?

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First post, by sprcorreia

Posted on 2013-02-17, 14:25

sprcorreia Offline

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A few days ago i was testing a Matrox G550 PCI with my Pentium Pro machine (see specs in signature) so i could use the DVI connector.
Card works fine but when i fired up Lotus 3 the MT-32 played much slower than usual. Putting the Tseng ET6000 back in restores the speed to normal.

Anyone ever experienced a similar issue? Can it be related to video output frequency and the game itself?

Reply 1 of 4, by elianda

Posted on 2013-02-17, 19:33

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I guess it is more related to the G550 IRQ taking the same IRQ as the MPU-401 going to the MT-32 ?

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Reply 2 of 4, by 5u3

Posted on 2013-02-17, 20:33

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What frequency do you get from the DVI port when running Lotus III? If it's 60 Hz instead of 70 Hz, that could be a problem.

I've tried DVI for DOS games only once and found that my Geforce 4 forces everything to 60 Hz, which caused timing problems with a lot of games.

Reply 3 of 4, by Mau1wurf1977

Posted on 2013-02-18, 08:54

Mau1wurf1977 Offline

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5u3 wrote:

I've tried DVI for DOS games only once and found that my Geforce 4 forces everything to 60 Hz, which caused timing problems with a lot of games.

Same!

Very noticeable with demos. I switched back to using VGA.

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