The Sinclair QL Forum

tofro wrote:

mk79 wrote:separate the outgoing pins from the Eprom pins like Chr$ did here https://www.ebay.de/itm/203613323341...

That picture BTW triggers my "dodgy solder joint" alert.

The blob on the middle jumper pin? It triggers me more that the (E)EPROM is not in a socket

tofro wrote:

mk79 wrote:separate the outgoing pins from the Eprom pins like Chr$ did here https://www.ebay.de/itm/203613323341...

That picture BTW triggers my "dodgy solder joint" alert.

Because the pins aren't completely engulfed in solder at the top/in the holes? The through-holes are totally full of shiny metal from top to bottom. It's fine tofro .

By far the most shoddy thing was one I sent to the USA recently.... I forgot to put the sticker on!

Chr$ wrote:

tofro wrote:The through-holes are totally full of shiny metal from top to bottom. It's fine tofro .

I'm sure it is. Pictures can misguide.

Pr0f wrote:https://www.ebay.co.uk/itm/143201813106 ... SwaXRcplig

These will destroy any socket you put them into. Or won't even fit in case of turned-pins sockets.

Good point Marcel - I am sure that it might be possible to find right angle turned pin headers though, so the jist of the idea is there.

Ah yes, OK, same concept but achieved by different means Pretty sure those things didn't exist back in the day - we used long-pin turned sockets (designed for thick multi-layer PCBs, I believe). Got the scaling wrong on Mk I and the pin pitch was just fractionally under 0.1", requiring a bit of ... um ... "technique", to get them assembled! "don't force it - use a bigger hammer"

QJumpJon wrote:Ah yes, OK, same concept but achieved by different means Pretty sure those things didn't exist back in the day - we used long-pin turned sockets (designed for thick multi-layer PCBs, I believe). Got the scaling wrong on Mk I and the pin pitch was just fractionally under 0.1", requiring a bit of ... um ... "technique", to get them assembled! "don't force it - use a bigger hammer"

Finesse it Jon, finesse it with a hammer and pliers...

Derek_Stewart wrote:I have Minerva MkII that I was repairing broken pins on the Rom Socket.

Why is an RTC useful on a stand alone computer? Is it so you know when to make a cup of tea?

Ruptor wrote:

Derek_Stewart wrote:I have Minerva MkII that I was repairing broken pins on the Rom Socket.

Why is an RTC useful on a stand alone computer? Is it so you know when to make a cup of tea?

He he, I guess it'd be useful for lazy people like me not to have to set it each time I start the computer.

More seriously, I guess it'd probably be useful on a Minerva Mkii when interfacing to real world hardware via the I2C bus.

If there's such a thing as a power on/off interface for the I2C bus, you could even make it switch on the kettle at your designated tea break time, Ruptor

AFAIK, no I2C interface to fill the kettle first, though. That's down to you...

It's probably also useful in correctly time stamping files you might be writing to a disk - makes it easier then to know which copy might be the latest one?

and bearing in mind the stock seconds counter in the ZX8302 is probably going to have some wonderful random garbage in it when it starts - so worth having that set correctly in any case