Faster CPU plug in extensions, How?

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Pr0f
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Re: Faster CPU plug in extensions, How?

Post by Pr0f »

unless you go entirely 3.3v, but then you sacrifice any compatibility with original hardware


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RalfR
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Re: Faster CPU plug in extensions, How?

Post by RalfR »

Derek_Stewart wrote:
RalfR wrote:This reminds me of the ABC MegaRAM from Uli Rosowski, which had the same processor.
I tried to buy a MegaRAM, but ABC Elektronik, decided not to supply it and tried to keep the money I paid them.

But I used the German Law Courts to force Andreas Budde to return the money. Which this was successful, but alas no MegRAM... Quite a good idea. pity there was crooked people to spoil the concept.
Which makes me wonder, the PCBs existed (scans elsewhere on Dilwyns site) and as far as I know, there was a review, perhaps in QLW or the german Quasar.

So I think, a few have actually been built.


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Derek_Stewart
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Re: Faster CPU plug in extensions, How?

Post by Derek_Stewart »

Hi,

It was a pity about the MegaRam board, which I tried to purchase, based on the review in QL World.

But in retrospect, maybe the MegaRam was a bad idea, would it of worked with Minerva, which was the operating system to use at that time.

I always thought an expansion port could be made with connections on the CPU and 8302 sockets. But never got around to to it.


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Derek
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Dave
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Re: Faster CPU plug in extensions, How?

Post by Dave »

The QL CPU sockets were absolutely terrible. While the idea is sound, those red sockets would have ruined the experience for many.


Derek_Stewart
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Re: Faster CPU plug in extensions, How?

Post by Derek_Stewart »

Dave wrote:The QL CPU sockets were absolutely terrible. While the idea is sound, those red sockets would have ruined the experience for many.
Can the socket be replaced with a better quality socket?


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Derek
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Dave
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Re: Faster CPU plug in extensions, How?

Post by Dave »

They can, but it is beyond the skill of the average hobbyist.

However, it’s easier to accomplish the goal by making a small expansion card with thru-connector and disabling the internal CPU like the SGC does.


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Ruptor
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Re: Faster CPU plug in extensions, How?

Post by Ruptor »

Dave wrote:it’s easier to accomplish the goal by making a small expansion card with thru-connector and disabling the internal CPU like the SGC does.
Perhaps remove the 68008 to save power as well?


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Dave
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Re: Faster CPU plug in extensions, How?

Post by Dave »

You can, but it draws fairly little power when running, and even less when halted.


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