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General Category => Amstrad CPC hardware => Topic started by: xesrjb on 14:10, 26 July 10

Title: Amstrad 6128Plus Reset
Post by: xesrjb on 14:10, 26 July 10
What and how is the best way to install a Reset at my Amstrad 6128Plus?

xesrjb

PS: or should I save the case and install an external?

Title: Re: Amstrad 6128Plus Reset
Post by: CPCIak on 14:59, 26 July 10
I would never drill a hole into my CPC...
http://www.amstradtoday.com/elements/resur/resur.htm
Title: Re: Amstrad 6128Plus Reset
Post by: Bryce on 15:08, 26 July 10
Which ever you decide (internal or external), you need to connect a push-button between pin 40 (Bus Reset) and pin 49 (GND) on the expansion port. this will work as a reset button.

Bryce.
Title: Re: Amstrad 6128Plus Reset
Post by: CPCIak on 15:12, 26 July 10
You're right Bryce. Please have a look at amstradtoday.com: There you'll find an external solution without penetrating the CPC.
Title: Re: Amstrad 6128Plus Reset
Post by: Bryce on 15:35, 26 July 10
Oh, didn't realise the link led to a solution :D

Bryce.
Title: Re: Amstrad 6128Plus Reset
Post by: spybro on 15:43, 26 July 10
actually the best place is to put a switch or a button over the headphones like you can see on mine
i use this place either as a reset button or a abba switch
(http://img180.imageshack.us/img180/3020/user646pic1992712787745.th.jpg) (http://img180.imageshack.us/i/user646pic1992712787745.jpg/)
Title: Re: Amstrad 6128Plus Reset
Post by: Gryzor on 15:58, 26 July 10
How far into the case do extensions go? I mean, I had built a rudimentary reset button once, but internally would be even better. So I guess, you should short the pins far enough into the board to allow external devices to plug in without causing any trouble...
Title: Re: Amstrad 6128Plus Reset
Post by: Bryce on 16:14, 26 July 10
@Gryzor
     I assume you're talking about edge-connector expansions? Centronics and Plus machines have closed connectors, so it's usually completely behind the connector that you'll be soldering, so it wont disturb external expansions. Edge connector CPCs use the entire exposed track area, so you shouldn't solder anything there or your expansions wont insert fully (not good), but you can always follow the track back to the next component pin and solder the wire on there, pin 40 (Bus Reset) goes back to pin 2 of IC110 or to one side of R102 (2.2K) in the 6128, so you could use this point. As far as GND is concerned, it can be found all over the PCB. I also personally prefer to solder onto the bottom side of the PCB, so that the new wires are hidden below.

Bryce.
Title: Re: Amstrad 6128Plus Reset
Post by: spybro on 16:52, 26 July 10
Quote from: Bryce on 16:14, 26 July 10
I also personally prefer to solder onto the bottom side of the PCB, so that the new wires are hidden below.

for those that have soldering experience is the best solution
but
for all the others it would be better if they just soldered the back side of the connector
Title: Re: Amstrad 6128Plus Reset
Post by: xesrjb on 17:42, 26 July 10
Quote from: Bryce on 16:14, 26 July 10pin 2 of IC110 or to one side of R102 (2.2K) in the 6128

And the solution for the CPC 6128Plus is???

xesrjb
Title: Re: Amstrad 6128Plus Reset
Post by: Gryzor on 09:56, 27 July 10
@Bryce - thanks mate, appreciate the clarification...
Title: Re: Amstrad 6128Plus Reset
Post by: Bryce on 10:13, 27 July 10
@xesrjb,
      on the plus you can just solder directly on to the pins behind the expansion port connector. But if you REALLY want to find somewhere else on the PCB, then you could always use Pin 159 of the ASIC (IC101) or the correct side of R118 (2.2K), but both of these options are much riskier (especially if soldering is not your thing) than using the back of the connector.

Bryce.
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