Enduring problems with A1200 busboards

[odin]

FWIW I have a Z2 busboard on my A1200 (dunno the rev, I think it's an AT mobo), used it with an AriadneII card and BlizPPC/BVis for years without problems. I haven't had any other cards in it though.

[Eco]

The Xsurf II totally works. By all that is holy, my A1200 is on the net!  :-D

Now for round 2 with the Cybervision 64/3D. Kling kling!

Tried another go at the zorro slots with the CV64/3D. For all free slots, with or without the 1230 IV accelerator, the early startup and sysinfo show the following info:

Board address: $40000000
Board size: 16384K
Board type: Zorro III
Manufacturer ID: 30727
Product: 7
Serial: -2147483647

It seems to my uneducated eye that the CV64/3D thinks it should be working in Zorro III mode, which is of course not true. Also, I have discovered what I take to be damage to the legs of the chip at the far end of the board (furthest from the monitor connector), like something slammed down on it. Take a look, I think some of the legs are now touching each other:



amiga1260 gets a cookie for suggesting the card might be broken... :-o  :-)

Edit: typo

[Framiga]

the board is detected like ZorroIII, so . .  .DCE crap mods.

The CV643D is detected like ZIII even without the XSurf?

Are you able to locate, where the "force to ZII" jumper would have to be placed? (on the P5 one)

Bye

[Eco]

Thinking that the legs of the chip are indeed connecting to each other, I took a very thin flathead screwdriver and gently drew it across the "empty space" between the legs, removing some loose-ish metal in the process. And now the board detects as a Zorro II card!

Still doesn't work, though. Sysinfo tells me the board is now:

Board address: $00200000
Board size: 4096K
Board type: Zorro II
Product ID: 67
Manufacturer ID: 14403
Serial number: -107374132

Looks somehow almost correct, except for the serial number. Maybe there is further damage or more connected legs.. Gotta take it easy so I don't hurt the board while meddling.. :-D

[Stedy]

Hello,

Have you tried adding just a little bit of solder to each of the affected pins (easier said than done I know)?

A bad solder joint gives you many problems.

[lorddef]

I think I may have read in another thread that theres a jumper  on the cv64 that forces zII mode. Anyone else know anymore about this?

[Eco]

There really isn't a broken solder joint I can add anything to. I tried measuring the pins with a multimeter to see if they're intact; they appear to be.

[patrik]

@Eco:

1. Measure if the affected pins still are connected to their respective solderpads. If not, you must redo the solder.

2. For each of the affected solderpads (3?) - measure if there is a connection between them and both their adjacent neighbours. If so, I would recommend some more scratching with that thin screwdriver of yours until you measure that there is no connection anymore.


/Patrik