Gravis pnp memory upgrade 8-chips or 9-chips.

Discussion about old sound cards, MIDI devices and sound related accessories.

Gravis pnp memory upgrade 8-chips or 9-chips.

Postby pngo » 2018-12-01 @ 18:09

Hi.
I got a gravis pnp and I want to install some ram on it.
Ebay has different types available and I wonder what are the compatible ones.
Especially 8-chips vs 9-chips that have parity or not.
Does the gus pnp support simm with parity (9-chips) or do I need to go for the 8-chip ones? (9-chips seems to be more spread than 8).
pngo
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Re: Gravis pnp memory upgrade 8-chips or 9-chips.

Postby 640K!enough » 2018-12-02 @ 05:46

Any standard unbuffered, 30-pin SIMM that operates at 5V and 70 ns or less should work. The InterWave doesn't specifically support parity memory (the DRAM data bus is only 8 bits wide), but using a parity SIMM shouldn't cause any trouble, if that's all you can find.
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Re: Gravis pnp memory upgrade 8-chips or 9-chips.

Postby pngo » 2018-12-02 @ 06:32

thanks for such a good response.
I went with this:
https://www.ebay.fr/itm/1-MB-Simm-30-pi ... :rk:1:pf:0
pngo
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Re: Gravis pnp memory upgrade 8-chips or 9-chips.

Postby pngo » 2018-12-11 @ 00:10

received memory works fine.
pngo
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Re: Gravis pnp memory upgrade 8-chips or 9-chips.

Postby 640K!enough » 2018-12-11 @ 00:21

Thanks for sharing your results. It's always good to hear about which parts end up working.
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