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Spectrum 48K edge connector

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Chris Young

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Feb 23, 2010, 1:43:31 PM2/23/10
to
Maybe I'm being completely blind, but I can't find any details of the
pinouts, or diagrams, of the standard 48K edge connector anywhere.
Does anybody have one?

I'm mostly interested in where the composite out is, but a full list
will be useful to be part of the FAQ, and submitted to HwB, so it can
be found :)

I found the following info from an old thread, not sure whether it is
correct or not:
> pins number 14 (ground) and 15 (composite video) on the lower side

I don't know which order or which end I'm supposed to be counting from
though!

I thought I'd have a go at hacking up a composite port which doesn't
involve opening up and resoldering the Speccy, just for fun.

Can anybody help?

Chris


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Sławomir Szczyrba

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Feb 23, 2010, 3:14:09 PM2/23/10
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As you can see,
we've had our eyes on you for some time now, Chris Young.
>
> Can anybody help?
>
This should be useful : http://yarek.com/forum/viewtopic.php?t=102

> Chris

S�awek
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Matt Rudge

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Feb 23, 2010, 3:29:15 PM2/23/10
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On Tue, 23 Feb 2010 18:43:31 +0000, Chris Young wibbled:

>
> I found the following info from an old thread, not sure whether it is
> correct or not:
>> pins number 14 (ground) and 15 (composite video) on the lower side
>
> I don't know which order or which end I'm supposed to be counting from
> though!
>

This image shows which is pin 1. To the right of the "notch" if you look
at the Speccy from the back, or to the left if looking from above.

http://www.1000bit.it/support/schema/zxspectrum/zxspectrum_mb_issue2.jpg

--
Matt

Chris Young

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Feb 23, 2010, 5:40:23 PM2/23/10
to
On Tue, 23 Feb 2010 20:29:15 +0000 (UTC) da kidz on comp.sys.sinclair were rappin'
to MC Matt Rudge:

> This image shows which is pin 1. To the right of the "notch" if you look
> at the Speccy from the back, or to the left if looking from above.
>
> http://www.1000bit.it/support/schema/zxspectrum/zxspectrum_mb_issue2.jpg

I take it the gap is "pin" 5? Either that or I've lost the ability to
count!

Chris Young

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Feb 23, 2010, 5:47:17 PM2/23/10
to
On 23 Feb 2010 21:14:09 +0100 da kidz on comp.sys.sinclair were rappin'
to MC Sławomir Szczyrba:

> This should be useful : http://yarek.com/forum/viewtopic.php?t=102

It is, thank you. However my Polish isn't up to much, and neither is
my Spanish. Can I guess, based on my previous findings of pin 14 and
15, that:
Cara de Componentes = Top
Cara de Pistas = Bottom

Matt Rudge

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Feb 23, 2010, 5:55:35 PM2/23/10
to
On Tue, 23 Feb 2010 22:40:23 +0000, Chris Young wibbled:

> On Tue, 23 Feb 2010 20:29:15 +0000 (UTC) da kidz on comp.sys.sinclair
> were rappin' to MC Matt Rudge:
>
>> This image shows which is pin 1. To the right of the "notch" if you
>> look at the Speccy from the back, or to the left if looking from above.
>>
>> http://www.1000bit.it/support/schema/zxspectrum/
zxspectrum_mb_issue2.jpg
>
> I take it the gap is "pin" 5? Either that or I've lost the ability to
> count!
>

I figured the same. Actually, if you look at the Polish/Spanish pin-out
in the earlier post, it shows pin 5 as blanked out.

Either that or we've both lost the plot!

--
Matt

Dylan Smith

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Feb 23, 2010, 6:01:34 PM2/23/10
to
On 2010-02-23, Chris Young <chris....@mail-filter.com> wrote:
> It is, thank you. However my Polish isn't up to much, and neither is
> my Spanish. Can I guess, based on my previous findings of pin 14 and
> 15, that:
> Cara de Componentes = Top
> Cara de Pistas = Bottom
>
> ?

Yes - literally "component face" and "track face". The component side is
conventionally the top side of a PCB.

spi...@freenet.co.uk

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Feb 23, 2010, 7:28:53 PM2/23/10
to
And verily, didst Chris Young <chris....@mail-filter.com> hastily babble thusly:

> Maybe I'm being completely blind, but I can't find any details of the
> pinouts, or diagrams, of the standard 48K edge connector anywhere.
> Does anybody have one?

Page 160 of the orange speccy manual.

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Brian Gaff

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Feb 24, 2010, 1:31:20 AM2/24/10
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Well its in all the good manuals, and I'm certain I've seen it loads of
places online so maybe there is a new virus around stopping you from finding
it.

Brian

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Chris Young

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Feb 27, 2010, 11:45:58 AM2/27/10
to
I wrote:

> I thought I'd have a go at hacking up a composite port which doesn't
> involve opening up and resoldering the Speccy, just for fun.

Well, it worked. My soldering skills are rubbish.
http://www.yoursinclair.co.uk/wiki/Main/CompositePort

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