I recently bought a nubus Jackhammer on ebay, and tried it for the first time this evening.
I was extremely disappointed to find that in both my nubus macs (Quadra 700 and 800) it was totally DOA. Didn't show in the Jackhammer CDEV, totally AWOL in Tattletech; I tried the usual swapping everything, removing everything, resetting the pram, booting the system with the slot empty first to reset the card slot pram.
Nada.
Reading the manual, I saw a note about force flashing the ROM by holding down option and clicking on the version number in the Jackhammer control panel:
I tried it in the 700 using control panel v3.2.3, and up popped a dialog box with a radio button set of all the slots (logical and physical) in my Quadra. Of the two physical slots, one was grayed out and one was selectable. I powered down, moved the card to the other slot and tried again, sure enough this time the other slot was selectable instead. I crossed everything, and clicked OK...
And now it works!
After the fact, I found this old post by Bolle: https://68kmla.org/bb/index.php?thr...mer-nubus-card-qaudra-840av.32059/post-342695
So I guess this is a common problem, but maybe others did not know that you can force flash the ROM in the control panel?
As an aside, what is the best version of HDT to use? I downloaded v2 on my Quadra running 8.1, and it works but it is very crashy... 1.x seems to old and 4.x is PPC only...
I was extremely disappointed to find that in both my nubus macs (Quadra 700 and 800) it was totally DOA. Didn't show in the Jackhammer CDEV, totally AWOL in Tattletech; I tried the usual swapping everything, removing everything, resetting the pram, booting the system with the slot empty first to reset the card slot pram.
Nada.
Reading the manual, I saw a note about force flashing the ROM by holding down option and clicking on the version number in the Jackhammer control panel:
I tried it in the 700 using control panel v3.2.3, and up popped a dialog box with a radio button set of all the slots (logical and physical) in my Quadra. Of the two physical slots, one was grayed out and one was selectable. I powered down, moved the card to the other slot and tried again, sure enough this time the other slot was selectable instead. I crossed everything, and clicked OK...
And now it works!
After the fact, I found this old post by Bolle: https://68kmla.org/bb/index.php?thr...mer-nubus-card-qaudra-840av.32059/post-342695
If the Mac won't boot at all with the card in place I would say bad ROM.
The 12V write enable to the two flash chips is always active on those cards. You can run them this way but most manufacturers of flash chips say you shouldn't if you don't want to write to them.
I suspect this leads to corruption if something unexpected happens. Have seen this on two Jackhammers already.
Desolder the two flash chips and see if the Mac boots again with the card installed. If it does you need to erase or programm them in an external programmer and solder them back on.
I put sockets on my card to get them out easily in case they get corrupted again.
So I guess this is a common problem, but maybe others did not know that you can force flash the ROM in the control panel?
As an aside, what is the best version of HDT to use? I downloaded v2 on my Quadra running 8.1, and it works but it is very crashy... 1.x seems to old and 4.x is PPC only...