Nubus video card in Iisi with adapter.

[Phipli]

And here is what I see under Nubus slots.

Could you scroll down further in the NuBus window? Paste all the text here.

 

[Phipli]

Yes I do see that.

This is good news. The computer is able to see the FPU on the riser card, which means a lot of the pins are working.

 

[crazyben]

Could you scroll down further in the NuBus window? Paste all the text here.

• Nubus /POS Siot* - $00:
  Board Name - Macintosh & Built in video
• BoardID = 40
• Vendor ID = Apple Computer, Inc
• RevisionLevel = Macintosh family 2.0
• Part#= 341S0818/341S0819
• Date = 19- Jun-90

• Functional resources
  + Device Resource Name = Display-Video Apple RBV1
• Device Category = 3 (Display)
  Derice Type l (ideo)
• Device Software Interface Type = 1
• Device Hardware ID = 24
• Device SResoucce ID = F86
• Driver Number = -49

+device resource name = CPU_68030_\macIIFamily

• Device Category = 10 (CPU)
• Device type = 4(68030)
• Device Softerare Intertace Type = 0
  Device Hardware ID =24
• Device sResource ID = $F0
• Driver Number - NA

 

[Phipli]

Well, it looks like the PDS slot in the computer probably works.

I have not recapped it. I will do it today. I tired with 2 different nubus video card that is working on iici and both are not working with adaptor. No bent pins or missing components. See attached pic if I missed anything.

Given you already tried Nubus cards that work in another computer, it is most likely that there is an issue with your riser card (although this can't be known with certainty unless you try it in another IIsi, or another riser in your IIsi).

You're going to have to do a lot of tedious manual stuff to troubleshoot it, or send it to someone like Amiga of Rochester or something.

If it was my board, I would photograph it or draw a sketch with every chip pin represented, and visually inspect where they start and finish and check continuity with a multi meter, before marking each one I've checked on the photo / drawing.

 

[crazyben]

Thank you for your insight on this. I did try in second iisi so now I need to check if with second raiser. I will keep and eye out for it and in the meantime I will check for traces as you mentioned.

 

[croissantking]

Thank you for your insight on this. I did try in second iisi so now I need to check if with second raiser. I will keep and eye out for it and in the meantime I will check for traces as you mentioned.

You tried the Nubus adapter and it didn’t work there either?

It could have a failed resistor pack for instance.

Do you have another Nubus card than the video card - since it’s very possible yours is faulty.

 

[Phipli]

Do you have another Nubus card than the video card - since it’s very possible yours is faulty.

They said that the video card works in another computer.

 

[croissantking]

They said that the video card works in another computer.

Ah, that’s good to know.

There’s not that much going on on the Nubus adapter. I’d suspect a failed RP1/RP2/RP3 or a bent pin on the PDS connector.