Sunday, 17 April 2016

Indivision ECS on Amiga 1000

One of my planned projects for some time has been to add an Indivision ECS to the Amiga 1000. However this goal has continued to elude me for one reason or another, but I decided to give it another go this weekend.

Because I don't have any old 1084, 1940 or 1960 monitors anymore, all my Classic Amiga equipment needs scan doublers installed to be able to run with my TFT screens. From when I bought the Amiga 1000 in 2015, I have had to use an old Amiga 1200 external scan doubler which doesn't work very well (it does work though) with it.

Since owning this Amiga 1000 I have added a gotek, memory expansions, and this year even tried running an ACA500 on it!

Today though, is the Indivision ECS.

Looking at the back I am not sure how I can mount the VGA port on the A1000 case without drilling a hole in it - any suggestions?

Pulling the case off the A1000 reveals the signatures on the inside of the case, including the recently departed Dave Needle, Rest in Peace mate and thanks for this wonderful computer.

Turning my attention to the inside of the Amiga 1000 now, I needed to buy a special converter for the Amiga 1000 to allow it to use the Indivision ECS on the Amiga 1000.

As you can see it has a socket for the Paula chip, and a socket for the Indivision ECS to be mounted on so that it fits on the A1000. The positioning of the Paula chip to the daughterboard shows why this is necessary.

The converter came with this really helpful german language explanation - thanks, very useful.

For those unable to read or speak German like myself, this is no help at all.

Fortunately Amigakit includes a guide on how to install it on the Amiga 1000 here.

I set to work, removing the Paula chip from the Amiga 1000 board, which is the chip marked 8634. Will never understand why they didn't label it Paula...anyway, it is the third chip shown in the shot below, on the right side closest to the daughterboard.

Important is to take note the end of the chip with the half circle cut out as it shows which way it needs to be installed to line up with the same half circle cut out on the socket itself.

Here it is removed with a chip extractor.

Yeah, I bent one of the pins..but I fixed it easily. The pins on this chip are really soft.

Here is the Paula chip next to the converter:

I then turned the Paula chip around so that the half circle end lined up with the half circle on the Paula socket on the converter as per the instructions.

Here it is installed on the converter:

Next up is installing the Indivision ECS on the converter. As per the instructions I ensured that the half circle end of the indivision ECS pins lined up with the half circle end on the socket of the converter.

Here it is installed. I left the foam protecting the pins on the Amiga 1000 converter while doing this.

I then realised it is not possible to install this into the Paula socket on the Amiga 1000 unless you remove the daughterboard first...

So a few minutes later and the daughterboard is removed:

Now this is where I got stuck!

The indivision ecs doesn't fit!

Not by much mind you, but it doesn't fit. The pins needed for the daughterboard are covered by the edge of the indivision card:

This shot shows the problem better, you can see how the pins need to be bent out in order for the amiga 1000 converter with Indivision ECS card installed to fit:

If the daughterboard pins are bent out then the daughterboard can't plug in, so the whole thing doesn't work.


I was thinking to myself, why can't I just reverse the direction of the whole converter thing, and rotate all the chips so they are the opposite to normal? That would work right?

After my experiences with the X1000 though I was not willing to chance my A1000 to find this out. But please let me know - this sounds reasonable as a solution right?

I then thought I could try installing the indivision without the converter, It seemed to me that it would fit without the converter, and just put the Paula chip in the socket on the Indivision itself.

I tried that, and it fitted on the Amiga 1000 without a problem.

Unfortunately though, the indivision didn't do anything when powered on for testing. I believe it should be the denise chip in that socket anyway so it makes sense that it didn't work.

So for now I put everything back together minus the indivision and converter, and made sure it still worked, which is does. I even tested the Rys Mark II usb mouse adapter on the Amiga 1000 while I was doing that, and it works perfectly.

I will revisit this again soon if someone out there can tell me how I can get the converter card installed in the Amiga 1000 without bending pins...


  1. the adapter are only for none piggy-back.
    ratte at a1k works on a dapter for piggy as i read this week

  2. Im not sure if I am following 100% fully but if you need more height, could you use a 48 pin IC socket as a spacer? - Aron G

  3. I believe you need a socket extender, so the Indivision ECS will be installed above the "piggy back" board. I haven't installed my Indivision ECS into one of my A1000's, but I think I remember getting such a socket extender when I purchased my Indivision ECS from AmigaKit, and indicated I would be installing it into an A1000.

    AmigaKit should be able to answer your questions, or contact Jens of Individual Computers directly, to see if he has the answer to your problem. Good Luck!

  4. amiga 1000 and microsoft mouse hahahahahaha uuuuuu

  5. Hi, I am able to read and write german, here a rough translation for the german installation guide (I used as source the image above) :-)

    Installation instructions:

    The Indivision ECS-Adapter for the Amiga 1000 is not, as one might think, put on the Denise socket, but on the Paula socket

    Please carefully remove the Paula chip and place it on the corresponding socket of the adapter

    Than install the adapter into the free Paula socket and the Indivision-ECS in the still free corresponding adapter socket

    Please leave the Denise in its socket. Also the socket on the Indivision-ECS, which is otherwise intended to use for the Denise, remains unused with this variant of installation

    by the way great blog :-)

    greetings from germany (Dresden)