ok acording to several sites ive checked the trapdoor is ONLY for chip ram. you have 2megs you cant use any more
the pcmcia slot is very slow for sram cards, very very slow so what you want is an accelerator card with ram. actually all the ones i saw have fast ram on them or a simm slot
several cards were made including:
the apollo 620 and 630 and the winner 630 from act
the e-matrix 630 and t-630 from M-tec
and the viper 630 from dce
all these require opening up the case and clipping the accelerator ontop of the 68000 smc on the motherboard
all of the trapdoor ram cards specifically state that they add up to 1mig of chip ram