RAM card choices?

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Joined: Dec 20 2003
Posts: 130

The GGLab's Website says their 8mb card isn't 100% DMA compatible (Limitation of the IIgs?), same as the Sirius card.

If only the first 4mb is DMA compatible am I making a headache for myself getting the 8MB? or should I just get 4mb and call it good?

In other words, if I plan on building up a ROM1 IIgs w/ a reactive CF card, Uthernet, SCSI rev C, mockingboard clone, and (Someday?) that nifty transwarp clone I've heard about, will having an additional 4mb of non-DMA ram cause problems?

Any advice appriciated, like to get it built and start playing with assembly Wink

I like how GGLabs gives you a DIY option Wink... A sorta "solder by numbers" kit for those of us that enjoy that sort thing.

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Mr.Fix's picture
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Joined: Mar 22 2005
Posts: 100
Re: RAM card choices?

4mb is all you need for the iigs. i have the briel 4mb card and never had a problem with it.

bushnrvn's picture
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Joined: Jan 15 2012
Posts: 186
Re: RAM card choices?

I'll second the Briel computers option. You can get the RAM pretty cheap from sites like memoryten.com.

I have a bag of RAM tucked away. When I get home Sunday, I'l take a look.

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WTB IIgs accelerator

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Joined: May 27 2013
Posts: 794
Re: RAM card choices?

theslownorris wrote:

The GGLab's Website says their 8mb card isn't 100% DMA compatible (Limitation of the IIgs?), same as the Sirius card.

The Sirius card is advertised as being 100% DMA compatible on the website.

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Joined: Dec 20 2003
Posts: 130
Re: RAM card choices?

True. But his paypal is deactivated, website a little dated, and folks say dude is flakey about filling orders.

I sent him an email all the same, haven't heard anything back Sad

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Joined: May 27 2013
Posts: 794
Re: RAM card choices?

theslownorris wrote:

True. But his paypal is deactivated, website a little dated, and folks say dude is flakey about filling orders.

I sent him an email all the same, haven't heard anything back Sad

Probably because someone filed a dispute because it takes a long time to get the products.

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Joined: May 27 2013
Posts: 794
Re: RAM card choices?

theslownorris wrote:

True. But his paypal is deactivated, website a little dated, and folks say dude is flakey about filling orders.

I sent him an email all the same, haven't heard anything back Sad

Probably because someone filed a dispute because it takes a long time to get the products.

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Joined: Dec 20 2003
Posts: 130
Re: RAM card choices?

After speaking to the GGLabs fellow he explained that only the first 4mb is available for DMA therefore the upper 4mb is usable but slower and that this is a limitation of the GS logic.

So it really sounds as if any card that "works" will not address this space with DMA.

Therefore I guess cards that "work" are good to go. Think I will be going with GGLabs because he returns email. :/

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Joined: May 27 2013
Posts: 794
Re: RAM card choices?

theslownorris wrote:

So it really sounds as if any card that "works" will not address this space with DMA.

The Applied Engineering GS ram plus card combined with the DMA support card makes all 8MB of ram DMA compatible according to the manual.

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Joined: Dec 20 2003
Posts: 130
Re: RAM card choices?

Well, dang.