3.17.18 M68hc1x Options
These are the ` -m ' options defined for the 68hc11 and 68hc12 microcontrollers. The default values for these options depends on which style of microcontroller was selected when the compiler was configured; the defaults for the most common choices are given below.
-
-m6811 -
-m68hc11 -
Generate output for a 68HC11. This is the default when the compiler is configured for 68HC11-based systems.
-
-m6812 -
-m68hc12 -
Generate output for a 68HC12. This is the default when the compiler is configured for 68HC12-based systems.
-
-m68S12 -
-m68hcs12 -
Generate output for a 68HCS12.
-
-mauto-incdec -
Enable the use of 68HC12 pre and post auto-increment and auto-decrement addressing modes.
-
-minmax -
-nominmax -
Enable the use of 68HC12 min and max instructions.
-
-mlong-calls -
-mno-long-calls -
Treat all calls as being far away (near). If calls are assumed to be far away, the compiler will use the
callinstruction to call a function and thertcinstruction for returning.
-
-mshort -
Consider type
intto be 16 bits wide, likeshort int.
-
-msoft-reg-count=count - Specify the number of pseudo-soft registers which are used for the code generation. The maximum number is 32. Using more pseudo-soft register may or may not result in better code depending on the program. The default is 4 for 68HC11 and 2 for 68HC12.