576Kb upgrade on 600XL, cable question

[scelbi8h]

Hi there,

 

I just received a 576Kb RAM upgrade from tf_hh. It's easy to fit but I have a question with the cables. It should come with 3 cables attached to the connector - red, brown and black. But instead this is what I got:

 

 

I've been trying to get some example pictures on the web, but I can't find any. Either the cables are ok and for some reason there's an extra salmon colour cable, or the red cable should be attached where this one is and they are all one place shifted. 

 

As you can see, this computer has no memory chips (it came with a Lotharek 64 RAM expansion already removed). So according to the instructions:

 

Quote

 

Red Connect this wire to the bend-up pin 16 of the MMU

Brown Connect this wire to the bend-up pin 6 of the MMU

Black Connect this wire in relation to your computer´s model

 

...and...

Quote

 

You might remove the existing DRAM memory chips, but it´s not mandatory. If you

remove the existing DRAM chips, then the black wire must not connected and can be cutted

from the included cable.

 

So I know I only need to connect 2 cables (see the already prepared MMU with bent legs). But which ones? salmon and red, or red and brown?

 

EDIT: Now I'm really confused. I found this picture:

 

 

My board is almost identical (same writtings on it), but this one in the picture has a 3 leg connector, while mine has 4 legs. I checked the 4 legs on my board and they all have traces going somewhere ?

Edited January 21, 2022 by scelbi8h

[scelbi8h]

Answering to myself: I was looking at the wrong PDF. This is an V2 board.

 

576KB_SRAM_600XL_V2.pdf (van-radecke.de)

 

Everything OK now, I'm going to finish the install right away 

Edited January 21, 2022 by scelbi8h

[BillC]

6 hours ago, scelbi8h said:

Answering to myself: I was looking at the wrong PDF. This is an V2 board.

 

576KB_SRAM_600XL_V2.pdf (van-radecke.de)

 

Everything OK now, I'm going to finish the install right away 

@tf_hh should add this link to his webpage

[scelbi8h]

47 minutes ago, BillC said:

@tf_hh should add this link to his webpage

I wrote him a mail before I noticed about the board version.

 

He replied and said he will do something about it

 

BTW, very nice board, looks and fits great on the mainboard, and works very well. My 600XL didn't look so nice with the 64kb board that had installed under the CPU, because the case didn't close well and I could see an open space on the front of the computer.

 

Now it looks as it should.

 

First thing I did was loading Prince of Persia

Edited January 21, 2022 by scelbi8h