PORTIBM PC Portable (uses same BIOS as XT) 0200-02FF - Sunshine uPW48, programmer for EPROM version CPU(Central Processing Unit) The microprocessor which executes programs on your computer.'s 8748/8749
Range:	4 bit DIP switch installable in the range 20x-2Fx

0200-0203	addresses of the 8255 on the uPW48
0208-020B	addresses of ??? on the uPW48 (all showing zeros)