HP 200LX is a 80186 based pocket computer which has MS-DOS 5.0 readily installed. This MS-DOS 5.0 is not complete and needs the original disks to be completed. However, this doesn't concern the memory issues which I am going to discuss here.
In order to use your favorite Dos software on 200LX you need more space than it offers to you by default. The maximum standard memory you can find on these computers is 4MB. The DOS takes away 640KB and you are left with the rest. No compiler like Turbo C++ can fit in that space so you need a solution.
At this point CF cards come to the rescue. 200LX has a standard PCMCIA slot. Since CF cards can be used with PCMCIA adapters, it is easy to connect them to the PCMCIA slot of 200LX. However, it can support up to 128MB and these CF cards can rarely be found these days. I have used Kingston 128MB CF card and I know that it is very slow, specially when you enter DIR command for the first time. Therefore a SUNDISK or a CF card which has 64KB memory can be more suitable.
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