Bottom of  FLASH SIMM extender showing cuts and jumpers (again sorry for the low resolution).  It should be noted that the SIMM extender is one obtained from Fry's Electronics**, and has bus transceiver and other chips on it that had to be removed to wire it.  Neither this nor manually changing jumpers during program execution  in RAM is a good practice.  This was only a proof of concept, and the next logical step is to put a decoder chip (74F138) on it using a latched address line higher than LA20,  and the romCS for chip enable.  This will require a bit of reprogramming of prog.elf (since it puts the SIMMS at different addresses, writes will have to be done to the address range of the non-boot FLASH SIMM address).
						Updated FLASH SIMM Pinout
					** I receive no compensation from Fry's in any way.  They were the only ones that I found with SIMM extenders in stock.  A better solution would be to have a SIMM extender with no chips on it and to put the decoder on that board.