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Author Topic: X-MEM internal install to 464 with pics  (Read 3280 times)

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Offline bjt

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X-MEM internal install to 464 with pics
« on: 12:16, 14 October 15 »

First off, thanks to TotO for the X-MEM, it rocks ;D

All you need for this is the X-MEM, a 50-way ribbon cable with a female IDC connector and some means of mounting the X-MEM to the case. I used sticky pads. An easy way to get a ready-made cable is to buy a 50-way internal SCSI cable like this one: NEW! Quad SCSI I/II Cable 0.9m | eBay


Unfortunately this method will only work with the V3 or cost-down 464 PCBs as the earlier versions don't have the holes by the edge connector.


First step is to clear any holes that came filled with solder from the factory. I used a solder pump for this.






Then prepare the cable by removing the IDC connector from one end. I found that that IDC connector had scored the insulation at the end of the cable so I could strip it to a perfect length for soldering just by pulling the insulation off by hand.
I soldered the row of wires furthest away from the edge connector first, the second row then went much faster as the cable wasn't moving around as much. Nevertheless this part probably took a couple of hours with breaks. Be 100% sure your pins match up before you get too far along :-)






After some final multimeter checks the whole lot went back into the case without problems.





It's alive! I was able to flash BASIC 1.1 and I have level music in Hero Quest and speech in Chase HQ, so I guess it's working.





Really chuffed that the green-screen 464 I got as kid now has colour, 128k and a disc drive  :P







« Last Edit: 13:10, 14 October 15 by bjt »

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Re: X-MEM internal install to 464 with pics
« Reply #1 on: 12:32, 14 October 15 »
It is really cool! Good that the old 464 has lots of free space inside!  :D

Offline Kris

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Re: X-MEM internal install to 464 with pics
« Reply #2 on: 12:49, 14 October 15 »
Nice integration :)
It must have been a pain to sold all those wires ! :-\

Online Bryce

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Re: X-MEM internal install to 464 with pics
« Reply #3 on: 13:41, 14 October 15 »
Nice pics and good tutorial.

Bryce.

Offline TFM

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Re: X-MEM internal install to 464 with pics
« Reply #4 on: 21:42, 14 October 15 »
IMHO I would keep the 50 pole cable from expansion port shorter. The shorter the better.  :)
TFM of FutureSoft
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Offline bjt

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Re: X-MEM internal install to 464 with pics
« Reply #5 on: 23:44, 14 October 15 »
Testing going well :-)



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Re: X-MEM internal install to 464 with pics
« Reply #6 on: 01:15, 15 October 15 »
Cool! Look at that 464!  :D

Offline Token

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Re: X-MEM internal install to 464 with pics
« Reply #7 on: 01:29, 15 October 15 »
Good job! Loved the photo with the 3D bat, the colors..(nice screen)
« Last Edit: 01:30, 15 October 15 by Token »

Offline Audronic

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Re: X-MEM internal install to 464 with pics
« Reply #8 on: 09:31, 15 October 15 »
@bjt


"" I found that that IDC connector had scored the insulation at the end of the cable so I could strip it to a perfect length for soldering just by pulling the insulation off by hand.  """
Thanks for the tip.


Well done

Ray
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If it Ain't Broke PLEASE Don't Fix it.
I keep telling you I am Not Pedantic.
As I Live " Down Under " I Take my Gravity Tablets and Wear my Magnetic Boots to Keep me from Falling off.

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Re: X-MEM internal install to 464 with pics
« Reply #9 on: 12:15, 15 October 15 »
I was thinking that your 464, as it is now, is exactly (more or less) what will be needed to run our text-adventure in an non 6128 machine. Maybe you will be able to give it a try and tell us how it feels!  :D .

Offline CPC_Fan

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Re: X-MEM internal install to 464 with pics
« Reply #10 on: 19:43, 15 October 15 »
Nice work there bjt. That's an excellent project. Would I be right in saying though, that when you want to alter the X-Mem to boot from ROM or CPC, you have to open up your 464 to change the switch position on the X-Mem?

Offline bjt

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Re: X-MEM internal install to 464 with pics
« Reply #11 on: 20:39, 15 October 15 »
That's true, although I can't see why I'd need to. I guess it would be easy enough to extend the switch to one mounted on the case.