HW MOD IPBOX 200 64 ram

[netman]

Как да увеличим RAM-a на мутант/ипбокс:
http://www.satnews.tv.it/vbforum/showthread.php?t=48017
Имиджи поддържащи 64МБ РАМ има на denktenk.com

I designed and built this change hardware Ipbox 200s/Mutant200s/Relook 100
In order to extend the ram from 32Mb to 64Mb in order to solve all the problems and delays of several blocks that had pictures with enigma.
In fact the problem was the lack of ram memory available for various applications.
Based on the assumption that the processor supports 2 memory chips for each of the 2 memory controller that owns, we can settle directly above the existing ram another chip, in order to double the amount of memory ram.
Indeed, the second memory controller on board is inaccessible because it is not sbrogliato and pin remain hidden under the cpu.
With this technique you could get up to 128Mb of ram on other models.
The amendment is directed only to experts welding.

Materials needed:
1 bench ram PC133 for expansion *
Various materials for welding smd (wire wire-wrap, welders 15w, tin 0.5mm, flux ...).
Various tools.

* We are concerned for a ram memory chips from 32Mb 16bit
For those desktop PCs use 8 / 16 chips from 8-bit ones for portable instead have 4 / 8 chip from 16-bit
For a chip from 32Mb we indirizzarci on a bench by 128Mb if it consists of 4 chip, from 256Mb if it is to 8 chip.
I have just found my shop confidence.

These images describe the change step by step.

Figure 1:
Cut the track with a taglierino just above the point that I identified as "K4.
Connect figure as head of the resistance R38 at the vcc on U5.
These steps allow us to free up GPIO30 that will monitor / CS (chip select) of the second memory chips.

Dissaldare a chip from the bench ram using the method of your choice (hot air solder, tin strips ...)
Bend the legs straight and vertical except pin 19 which will leave the chip horizontally.

Figura2 and 3:
Lay the top of the ram chips already present on the card. After verifying that the pin chips added combacino perfectly with the pin already on the card, go to welding pin for pin.
Connect pin 19 remained isolated with a wire at "K4.

Note: in the pictures there is a link that no longer serves, I had to do it because the evidence had gone wasted a circuit board.

Then the receiver should be compatible with fw normal, but to exploit the 64Mb RAM will need to use this special version (kernel and uboot modified).
Warning! Do not try fleshare this fw in an unmodified receiver, or be forced to use the jtag to revive him!

The author accepts no responsibility for any damage.

Thank you for Sandals and documentation necessary for the amendment to drivers.

Greetings,
PhotosOfGhosts

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