Trying to get an Expansion Systems Dataflyer RAM card to work on an Amiga 500 rev 5 mobo.
I've got the card populated with (

30-pin 1M simms, which have supposedly been tested.
There are a series of jumpers JP1-JP4.
JP1: a cryptic 2x7 block of jumpers. I must be an idiot, because I have no idea how to read their chart.
JP2: PLUS/2000 should be ON, DF200 = OFF. Not exactly sure, but I think that PLUS implies that it's to be used with a 500, so I have it ON.
JP3: a 2x3 jumper block. Options appear to be INDEPENDENT, ATTACHED, EXTERN SUPPLY. I have it set to INDEPENDENT. With this option, I've got +5v measured at each of the ICs socketed ICs, so I guess this is right.
JP4: a 2x3 jumper block. No clue what this is used for.
Picture says a thousand words, blah blah.
http://techtravels.org/amiga/dataf500.jpgThe amiga boots fine, an avail command yields nothing but the 512k onboard, and the memory is otherwise unrecognized. I've tried using an "addmem" command but I'm not sure exactly where this memory would be mapped. I guessed at $200000 but I can't find anything that doesn't simply hang the command.
The dataflyer DMS disks don't seem to have any special ram mounting command that I can find.
I'm thinking this SHOULDN'T autoconfigure, but who knows.
I also have the DataFlyer Plus Revision 2.1 SCSI only card, and this RAM card can stack on the RAM header. I get the same bad results stacked, so I figured I'd eliminate the card as a point of failure, and just get the RAM card working first.
Thanks