VP-298 programmer one simple acute question + picture

[Scorpion]

Hii all,

In order to save the need to solder in and out rom chips I bought the following new programmer and it's cable.
I can't figure out how do I connect between the programmer and the attached cable.
Please cheack the attached picture.
The picture tell everything.

* In the picture I numbered the cable by number 1 and the programmer by number 2.
How do I connect number 1 to number 2?


Best Regards,

Attachments

[LarrySabo]

I guess it's related to DR, so on topic here. Did you not get a jumper board like the one in this picture:
http://goo.gl/hghaa

It plugs into the programmer and you push the connector onto the upward-facing pins.

[Scorpion]

I knew I missed somthing.
LarrySabo thank you very much for the link. I am looking for what you called jumper board - > I don't have it right now.
Where can I get it?

* You guessed right it is related to DR - instead of soldering out and in rom chips between boards, this trick should save me the trouble.

Attachments

1.JPG (24.87 KiB) Viewed 9462 times

[LarrySabo]

MCUMall sells just about everything programmer related. They have what you need: a 8 pin inline DIP M-to-M header: http://goo.gl/GPLfB
They are in Vancouver, BC.

[HaQue]

You could easily make one of these from Radio shack / tandy / jaycar /dick smith or whatever your favourite electronics store is.
just follow the pinout of the chip to where it is supposed to be in the programmer

[Jar]

Do you guys normally use this while the package is still located on the board? I have had issues with contention from other chips. What is your procedure for getting around this; if you don't mind me asking. Maybe I am overlooking something? Or is this the norm?

[HaQue]

I have programmed many 24lC02 chips without desoldering on monitor motherboards, but haven't had much other experience.

I think that as the ROM chips are designed to be programmed/updated etc while on the board, it is ok.

[LarrySabo]

I've had problems with a laptop motherboard, where the check-sum would change each time I made a backup of the ROM. I can't be sure the CMOS battery had been removed, so I suspect that was the cause. You would obviously not want the device to be powered when you do the save/write.

[Jar]

I have only tried doing this a few times with hard drive PCBs and was unable to get it to work with the chip connected to the PCB.

[fzabkar]

I have programmed many 24lC02 chips without desoldering on monitor motherboards, but haven't had much other experience.

I think that as the ROM chips are designed to be programmed/updated etc while on the board, it is ok.

I can read the EDID data via the monitor's video connector while the monitor is powered down. In fact the EDID/DDC spec requires that the EDID EEPROM be powered from an external supply.

I have actually made a VGA-to-DIP8 adapter for this purpose. Pin #9 of the DB15 connector is the +5V external supply pin.

[fzabkar]

I've had problems with a laptop motherboard, where the check-sum would change each time I made a backup of the ROM. I can't be sure the CMOS battery had been removed, so I suspect that was the cause. You would obviously not want the device to be powered when you do the save/write.

I can't see why the CMOS battery would have had any bearing on the outcome. Instead I suspect that there may have been a contention problem. I would think that if you were to hold the board in a reset state, then this may help. One way to do this might be to remove the CPU or RAM, or perhaps to short the PSU's POK signal to ground.