I noticed that Socket makes a rugedized dual serial port adapter for the pcmcia slot. Would a Casiopia PA2400U with 16 meg ROM & 8meg ram, pcmcia card slot and flash card slot work for VRA? Could the PCMCIA slot with a dual serial adapter be used for the two serial ports with the flash card slot left for as applied maps? If I recall right the manual requires 16 meg memory. Is this 16 meg ram or 16 meg total?