Hello,

>> Do you have any idea if the interrupt assignment is static ( read: 
>> will the E100 slot
>>  always use IRQ 23 ) ?
>
> On this generation of machines, I'm pretty sure that all the IRQs are 
> static wrt to the slots.   That is, slot A1 always has the same IRQ, 
> slot B1 always has its own, invariable IRQ, etc.   There is only one 
> IRQ wired to each slot and they are hard wired, so unless Grand 
> Central plays with the IRQ assignment/physical pin relationship a 
> given slot will always have the same IRQ.
So hardwiring it to IRQ 23 should always work. Well, verifying it won't 
hurt :)

>> The OF entry is FWB,JackHammer - maybe bugging FWB yields some 
>> details.
> In the era of this card, FWB had sold its hardware business to 
> StreamLogic.   StreamLogic was later bought by someone else and 
> discontinued sales of the Jackhammer line, though they kindly left the 
> driver/firmware updates available for download for a long time.
Ok, I've found the latest UMAX drivers/updaters - maybe I can find out 
something.
The JackHammer label is highly ambiguous btw. - there was a bunch of 
NuBus SCSI cards with this name...

have fun
Michael