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emu/z80pack-1.9/doc/README-asm.txt

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+Usage:
+
+z80asm -ofile -f[b|m|h] -l[file] -s[n|a] -x -v -dsymbol ... file ...
+
+A maximum of 512 source files is allowed. If the filename of a source
+doesn't have an extension the default extension ".asm" will be
+concated. Source file names may have a path, the maximum length of
+a full qualified filename is 2048 characters.
+For relative paths the extension must be used, because all characters
+after a "." would be used as extension!
+
+Option o:
+To override the default name of the output file. Without this option
+the name of the output file becomes the name of the input file,
+but with the extension ".bin". The output file may have a path,
+the maximum length is limited to 2048 characters.
+
+Option f:
+Format of the output file:
+
+	-fb -> binary file
+	-fm -> binary file with Mostek header
+	-fh -> Intel hex
+
+Option l:
+Without this option no list file will be generated. With -l a list
+file with the name of the source file but extension ".lis" will be
+generated. An optional file name with path (2048 characters maximum)
+may be added to this option.
+
+Option s:
+This option writes the unsorted symbol table (-s), sorted by name (-sn)
+or sorted by address (-sa) into the list file. This option only works
+together with option -l.
+
+Option x:
+Don't output data in pass 2 into object file for DEFS. This only works
+if unallocated data isn't followed by any code or initialized data!
+Usefull for CP/M BIOS's, where unallocated data doesn't need to be
+part of the system image, if the complete image won't fit on the system
+tracks.
+
+Option v:
+Verbose operation of the assembler.
+
+Option d:
+This option predefines symbols with a value of 0.
+The number of this option is not limited in the command line.
+
+Pseudo Operations:
+
+Definition of symbols and allocation of memory:
+
+	 ORG    <expression>    - set program address
+<symbol> EQU    <expression>    - define constant symbol
+<symbol> DEFL   <expression>    - define variable symbol
+<symbol> DEFB   <exp,'char',..> - write bytes in memory
+<symbol> DEFW   <exp,exp..>     - write words (16 bits) in memory
+<symbol> DEFM   <'string'>      - write character string in memory
+<symbol> DEFS   <expression>    - reserve space in memory
+
+
+Conditional assembly:
+
+IFDEF   <symbol>        - assemble if symbol defined
+IFNDEF  <symbol>        - assemble if symbol not defined
+IFEQ    <exp1,exp2>     - assemble if equal
+IFNEQ   <exp1,exp2>     - assemble if not equal
+ELSE                    - else for all conditionals
+ENDIF                   - end of conditional assembly
+
+
+Manipulation of list file:
+
+PAGE    <expression>    - number of lines/page
+EJECT                   - skip to new page
+LIST                    - listing on
+NOLIST                  - listing off
+TITLE   <'string'>      - define title for page header
+
+
+Others:
+
+INCLUDE <filename>      - include another source file
+PRINT   <'string'>      - print string to stdout in pass one