Really P'd off

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Whopper
Chuggy Microdrive
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Really P'd off

Postby Whopper » Thu Mar 08, 2018 7:25 pm

Really, REALLY p'd off. Ordered a Super Gold Card, received it and it doesn't work.

Was supposed to be in good condition. Now it'll have to go back

Mutter, mutter mutter :cry:


You woke me for THAT!!!
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mk79
Over Heated PSU
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Re: Really P'd off

Postby mk79 » Thu Mar 08, 2018 7:57 pm

Damnit, where do people always find them to buy? I waaaant one How much was it?


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Whopper
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Re: Really P'd off

Postby Whopper » Thu Mar 08, 2018 8:05 pm

All in all over $400.

The seller has refunded and I get to keep the dead unit.

Now for some searching for circuit diagrams and such.

Whopper


You woke me for THAT!!!
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Whopper
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Re: Really P'd off

Postby Whopper » Thu Mar 08, 2018 8:07 pm

mk79,

You do know that Dave is producing a device with similar capabilities to the SGC. Look in the General QL Chat. Proposed cost around £70.


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Dave
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Re: Really P'd off

Postby Dave » Thu Mar 08, 2018 8:48 pm

It's *just* a memory expansion that contains a CPU to get the two extra address lines. It runs that CPU at stock speed of 7.5MHz and 8-bits data bus, so it in no way compares to an SGC.

It's just a big, cheap memory expansion that does some clever things.

Just saying...


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Whopper
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Re: Really P'd off

Postby Whopper » Thu Mar 08, 2018 8:54 pm

Dave,

It's still better than a dead SGC. :)


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Pr0f
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Re: Really P'd off

Postby Pr0f » Thu Mar 08, 2018 9:19 pm

Whopper,

If you do find a circuit diagram for the SGC, I would be interested to have a look - I am keen to know how the 2 74hct244 chips are connected...


Derek_Stewart
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Re: Really P'd off

Postby Derek_Stewart » Thu Mar 08, 2018 9:40 pm

Hi,

If I thought I could get $400 ???? Whsts thst in real money... I would fix the SGCs I have.

I doubt there is a circuit diagram. But the SGC is only 4 layer board so should be straight forward draw a schamatic. But it still maybe copyright.


Regards,

Derek
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Whopper
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Re: Really P'd off

Postby Whopper » Thu Mar 08, 2018 9:45 pm

Derek,

That included postage and import duties. They took a huge chunk of cash.

Whopper


You woke me for THAT!!!
tetroid
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Re: Really P'd off

Postby tetroid » Thu Mar 08, 2018 9:52 pm

Pr0f wrote:Whopper,

If you do find a circuit diagram for the SGC, I would be interested to have a look - I am keen to know how the 2 74hct244 chips are connected...


Two HCT244 and one HCT367 is for buffering A0 - A19, DSL and R/WL lines from SGC to QL.



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