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
call
instruction to call a function and thertc
instruction for returning.
-
-mshort
-
Consider type
int
to 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.