🚀 go-pugleaf

[I cross posted this message with comp.sys.ibm.pc in hopes that someone
 in there might know something about this controller...]

I have a PC/RT Model 6150-25 which originally came with 2 40 meg MFM
drives and some non-descript MFM controller.  I've since come into 
possession of a 2nd controller and R70 drive from a newer model 6150-25
and want to add the 2nd controller and drive to my present configuration.

The ESDI controller is a WD1005-ARM.

The original controller has jumper blocks for addressing it as the 
2nd controller (as stated in the RT documentation), so with the ESDI 
controller as #0 and the MFM controller as #1 I can get the system to
recognize hdisk2 as one of the 40's and hdisk0 as the 70, however I lose
one of the 40's.  I figure this is because the RT only recognizes 2
drives on controller 0 and 1 drive on controller 1. 

So I figure if I make the MFM controller act as 0 and the ESDI controller
act as 1 then everything should be koshure. 

My question therefore is:  Does anyone know how to make a WD1005-ARM
controller act as a second controller?  There's 2 jumper blocks on
the thing and I've tried all combinations.. Presently it's in the machine
with the drive but is not recognized and does not interfere with
anything... I know I can physically cut the trace leading to pin
D6 of the bus-connector and re-route it to pin D7 to make the bus
think it's the second controller, however, is there not also a bus-addr
change needed as well? This I'm not sure about.

Any help would be greatly appreciated!


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