Keil A251 Assembler

Conditional Assembly Controls

Set assigns numeric values to variables that are used in $IF and $ELSEIF directives to control conditional assembly sections. The variable names must conform to the standard symbol conventions and are administered separately so that they cannot interfere with other assembly symbols.

Reset clears previous Set assignments that are entered in the options dialog of a higher Target or Group level.

Macro Preprocessor

ToDo The Standard Macro Processor is the easier macro processor to use. It allows you to define and use macros in your 251 assembly programs.  The standard macro syntax in compatible with that used in many other assemblers. The Macro Processing Language (MPL) is a string replacement facility that is fully compatible with the Intel macro processor. MPL has several predefined macro processor functions that perform many useful operations like string manipulation or number processing.

This check box enables the Macro Processing Language (MPL) which is a string replacement facility. MPL has several predefined macro processor functions that perform many useful operations like string manipulation or number processing.

Case Sensitive Symbols

When enabled the Assembler interprets symbol names using both uppercase and lowercase characters and outputs them to the object file with the case preserved. Symbols are case-sensitive. When disabled the Assembler converts all symbol names to uppercase.

Include Paths

Allows you to supply one or more paths to search when processing an $INCLUDE file directive.

Misc Controls

Specify any assembler directive for which there is no individual dialog control.

Assembler Control String

Displays the current directives at the assembler command line.