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Author Topic: A4000T DMAC question  (Read 1338 times)

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Offline OSS542Topic starter

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A4000T DMAC question
« on: November 24, 2008, 04:37:48 AM »
A quick silly question.....

Having never seen the inside of an A4000T before, I am wondering if these used a DMAC anywhere ?  I can see a Buster 11 and a Ramsey 7, but no DMAC.   Perhaps they did not use one .  Does anybody know about this ?

OSS542
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Offline Zac67

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Re: A4000T DMAC question
« Reply #1 on: November 24, 2008, 07:27:08 AM »
Sure it does, the same Super DMAC as A3000/T.
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Offline OSS542Topic starter

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Re: A4000T DMAC question
« Reply #2 on: November 24, 2008, 08:47:00 AM »
I had thought the same, but I don't see it on the board.  I have looked up a number of large images of other A4000T boards, and don't see it there either, nor any socket for it.
I was thinking perhaps they didn't use it in that model.
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Offline x56h34

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Re: A4000T DMAC question
« Reply #3 on: November 24, 2008, 03:50:36 PM »
A4000 (both desktop and tower) does not use the DMAC chip, however it does use RAMSEY (ver. 7).
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Offline Zac67

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Re: A4000T DMAC question
« Reply #4 on: November 24, 2008, 10:21:20 PM »
Doh - was actually feeling very positive about this... Sorry for the misinfo.

As it seems the 710 doesn't require an external DMA engine and can drive the address bus by itself.
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