I just started writing a C application for the Cygnal C8051F125 and am having difficulty setting/viewing the paged SFR's Here's a simple example in C code: SCON0=0x50; SCON1=0x40; Compiles fine, but when I open the disassembly window, these 2 statements get translated to: MOV SCON0(0x98),#0x50 MOV SCON0(0x98),#0x40 i.e., both statements modify SCON0. This is confirmed by opening the peripheral window and examining Serial port 1 and 2 --- SCON1 never changes (?????) Then I realized there was an SFR called "SFRPAGE". Eureka! So I modified the code to: SCON0=0x50; SFRPAGE = 0x01; SCON1=0x40; And recompiled .....Behavior is exactly like before - only SCON0 gets modifed! I assume that if I execute this on a target (which I don't have), it will work as expected but doesn't C51/uV2 support viewing/examining SFRs in other than the "base" page??? This CAN'T be a bug...or is it?? Thanks, Joe