Thank You! -----Original Message----- From: owner-hecnet at Update.UU.SE [mailto:owner-hecnet at Update.UU.SE] On Behalf Of Johnny Billquist Sent: Saturday, November 19, 2011 9:48 PM To: hecnet at Update.UU.SE Subject: Re: [HECnet] Macro32 entry forward desclaration - how? On 2011-11-19 20:46, Pinoccio wrote: Hi all! I am studying Macro32 and have a seemingly simple question. My source file is: .TITLE tstentry .IDENT /V1.0/ .PSECT RDATA,NOWRT,SHR,NOPIC,NOEXE,RD,QUAD HI: .ASCID "Hello, World!" .PSECT CODE,NOWRT,SHR,PIC,EXE,RD,QUAD .ENTRY START, ^M<> CALLS #0, PRINT RET .END START .ENTRY PRINT PUSHL HI CALLS #1,G^LIB$PUT_OUTPUT RET .END PRINT Macro32 decides PRINT is an external symbol, and link denies to produce executable with a "LINK-W-USEUNDEF, undefined symbol PRINT referenced" error. How I should make forward declaration of PRINT function to show assembler it is valid local symbol? In C language I can make prototype declaration before calling. But what is a right way for Macro 32? You have misunderstood what .END does. .END means assembly stops there, and the argument is the start address of the program. So, your code for your PRINT routine is not even assembled. Make sure you create a list file, and this should be obvious. Johnny -- Johnny Billquist || "I'm on a bus || on a psychedelic trip email: bqt at softjar.se || Reading murder books pdp is alive! || tryin' to stay hip" - B. Idol