Post by thread:macro subroutines: was: Stepper Motor

<BLOCKQUOTE Author="Quentin"> Use of subroutines. Careful with overdoing it, esp. with the 12C50x and the 16C5x for two simple reasons: Due to the size and structure of the program counter you can only have subs in the first 256 addresses. Here you won't see it, because the code is small, but later it could become a problem. Secondly these Pics only got a two level deep stack, IOW, you can only call subs twice without a return. I think you made such a mistake in calling your delay routines. As a general rule I only use subs if I am going to call that sub more that once from my main routine. Later on, learn about using Macros if you want to use this type of program structure. </BLOCKQUOTE> Has anyone been able to write a macro for MPLAB or include a capability in any assembler that allows one to define a routine and: - not include it if it is not referenced, - include it inline if it is used once or - automatically make it a subroutine and include calls to it inline if it is used more than once? I was able to do this once years ago with and old version of MASM (for the x86 processors) but the technique fails in the current MASM 6.14 (for Windows 32bit code). And no, you don't have to be crazy to write Win32 code in MASM, see http://techref.massmind.org/language/asm/win32asm Anyway, back on topic, it has seemed to me for years that this should be a very, very desirable feature to have in any assembler. Especially for the little processors like the PIC. If anyone has this, I would dearly love to know. How about a preprocessor? --- James Newton spam_OUTjamesnewtonTakeThisOuTgeocities.com 1-619-652-0593 http://techref.massmind.org NEW! FINALLY A REAL NAME! Members can add private/public comments/pages ($0 TANSTAAFL web hosting)