u/kubatyszko

Hi,

I need help with IC5 - which is the middle of the three DM74AS240N chips on the daughterboard.

The revision of my daughterboard is B and that chip has some evidence of a (botched) repair, with a few pins that don't seem to make contact with anything else.

The pins I'm interested in are: 3, 5, 7, 13, 17. (count from the bottom left, go along and wrap around the chip, the pin 20 is the upper left).

I would need help probing - simply take a multimeter (ideally with continuity test), touch pin 3, and then slide it across everything else - if you hear beep then go back and note where did it make contact (which chip and pin), note that the resistor networks only expose contact on the underside. If it makes contact with the IDC 60 pin connector - note which pin (a photo of the board with marked contact would be ideal).

I would really appreciate someone willing to help out, if I'm successful I will finally be able to bring my MacIvory back to life.

Thanks

Hi there,

I got a MacIvory 2 in an Apple IIfx, it came with an external CD drive and all the original Symbolics CD's.

Apparently the FEP partition was erased before shipping, so I can't immediately confirm that everything works.

I tried restoring the FEP partition with no luck, I even did a clean install using a BlueSCSI with the same results.

Basically, I'm configuring the FEP0 in the MacIvory control pane, I try to launch the "Ivory Breath of Life", which can see the FEP0.

I then erase the FEP using the IBL pane, and it seems to be initializing the FEP.

Now, I'm getting an error "the application has unexpectedly quit because an error of type 12 occurred".

When I retry doing the same, restart IBL and wait until it shows me the "Disk Restore" menu option, the farthest I can get is the restore pane showing again, but at this time, it scans the entire SCSI bus and doesn't detect the CD drive anymore.

I feel like I'm at a total loss with this , I seem to be doing all the right steps, but it just won't work.

The CD drive came with that IIfx, so I would expect it to work, even if Ivory was being picky...

Any ideas ?

Thanks

Anyone with MacIvory 2 and NS 8/16 board with daughterboard willing to help probe a few pins ?

Macivory 2 in Apple IIfx - issue with restoring FEP