A4000 memory upgrade /newbie problem/

[patrik]

@b00mer:

If you are to use double-sided 8MB simms you will only as mentioned be able to use two of them. They should be inserted in the simm sockets labeled "bank 1" and "bank 2" - leave one simm socket empty between the Chip memory simm and the first 8MB simm, then leave another empty simm socket between the first 8MB simm and the second 8MB simm.

The reason for having to leave an empty simm socket between each simm is that the simm sockets spaced for single sided simms.

I also think you also have to set a jumper to use two double sided 8MB simms. I dont remember if it was Lemmink or Tjlazer who once mentioned which one that jumper was.


/Patrik

[patrik]

@dauber:

Yeah, I saw that, that's why I adviced him to leave an empty simm socket between each simm - this as otherwise the neighbouring simm will be in the way of the circuits on the back side of the double sided simm, definately making it not fit. As you say, the A4000 simm sockets can be an arse when it comes to actually holding the simms, especially if the circuits on the simms are a bit on the thicker side. It might also be possible that the double sided 8MB simms have too big/many circuits making them interfere with sockets neighbouring their back side, even if they dont contain a simm.

The simplest thing would be to get 4 pieces of 4MB single sided simms as those will definately fit. A good idea is to get simms with as slim circuits as possible as it will make the simms "click" to place much easier. It should not cost much either.


/Patrik