Groups > comp.sys.apple2.programmer > #275

Re: "LINKER", a program found on Asimov's "EDASM.DSK"

Date	2012-04-13 16:57 -0400
From	Steven Hirsch <snhirsch@gmail.com>
Newsgroups	comp.sys.apple2.programmer
Subject	Re: "LINKER", a program found on Asimov's "EDASM.DSK"
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On 04/12/2012 04:49 PM, David Schmenk wrote:

> As for using multiple ORG statements, that is probably causing confusion
> with the REL directive.  Even though you are assembling a REL file, it
> still requires an ORG statement to set a base address for the assembly.
> The ORG value is saved in the AUX field of the file, much like a BIN file,
> and used when calculating the relocation offset.  (Note: Virtual ][ has a
> bug where it forgets the AUX value between runs when mounting a directory
> as a ProDOS volume)  I think having an ORG directive is pointless when
> generating a REL file, but that's how it works.  I discovered that placing
> multiple ORG directives in the ASM source will generate multiple object
> files, one for each ORG.  Wanting to build a single binary that would
> relocate certain sections to different addresses required an additional
> tool to reconnect the separate object files back into one.  I had to build
> using the SYS objective in order to get everything assembled at the address
> I wanted it.

Yes.  If .PHASE was implemented properly you wouldn't need to go to all that 
trouble.

Willi, if you ever disassemble the assembler please consider adding this?

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"LINKER", a program found on Asimov's "EDASM.DSK" A2CPM <a2@wilserv.com> - 2012-04-08 21:51 -0700
  Re: "LINKER", a program found on Asimov's "EDASM.DSK" MarkLim <markpmlim@yahoo.com.sg> - 2012-04-09 06:18 -0700
    Re: "LINKER", a program found on Asimov's "EDASM.DSK" A2CPM <a2@wilserv.com> - 2012-04-10 11:44 -0700
      Re: "LINKER", a program found on Asimov's "EDASM.DSK" MarkLim <markpmlim@yahoo.com.sg> - 2012-04-10 14:23 -0700
        Re: "LINKER", a program found on Asimov's "EDASM.DSK" A2CPM <a2@wilserv.com> - 2012-04-12 12:05 -0700
          Re: "LINKER", a program found on Asimov's "EDASM.DSK" Steven Hirsch <snhirsch@gmail.com> - 2012-04-12 15:37 -0400
          Re: "LINKER", a program found on Asimov's "EDASM.DSK" David Schmenk <dschmenk@gmail.com> - 2012-04-12 13:49 -0700
            Re: "LINKER", a program found on Asimov's "EDASM.DSK" A2CPM <a2@wilserv.com> - 2012-04-12 17:52 -0700
            Re: "LINKER", a program found on Asimov's "EDASM.DSK" Steven Hirsch <snhirsch@gmail.com> - 2012-04-13 16:57 -0400

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