I written this code and it compiles just fine. However, when I tried to include <stdio.h> library to use with my hyperterminal, it says that it compiled, but can not link. Here is the message that it gave me... ERROR L107: ADDRESS SPACE OVERFLOW SPACE: DATA SEGMENT: _DATA_GROUP_ LENGTH: 0070H My memory model is "Small: variables in DATA". When I changed it to compact or large, my program will compile and link, but it behaves differently when I put program it to the Philips 89C664.. thanks Tommy
I written this code and it compiles just fine. So why is your title "Can't Compile?!" ;-) See the recent Thread, Differences between compiler versions When you include the extra functions, they require some space for parameters & their own internal variables as well as just code space - which is why you got the DATA space overflow in Small model. When you switch to COmpact or Large, your code starts using "External" [1] memory, MOVX instructions, and the DPTR. There could be a hardware fault with your XRAM, or a timing difference which causes your code to fail, something might be corrupting your DPTR(s), your Startup code might not be properly initialising your XRAM & revealing flaws like uninitialised variables in your code, you may have mis-used memory-specific pointers, etc, etc [1] "External" here means "outside the CPU core" - although it may be packaged within the IC, it is still outside the core & has to be addessed with MOVX.