Really P'd off

[Whopper]

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

[mk79]

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

[Whopper]

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

[Whopper]

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.

[Dave]

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...

[Whopper]

Dave,

It's still better than a dead SGC.

[Pr0f]

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]

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.

[Whopper]

Derek,

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

Whopper

[tetroid]

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.