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ms
Target Mask(H8300S_1)
Generate H8S code

msx
Target Mask(H8300SX)
Generate H8SX code

ms2600
Target Mask(MAC)
Generate H8S/2600 code

mint32
Target RejectNegative Mask(INT32)
Make integers 32 bits wide

maddresses
Target Undocumented RejectNegative Mask(ADDRESSES)

mquickcall
Target Mask(QUICKCALL)
Use registers for argument passing

mslowbyte
Target RejectNegative Mask(SLOWBYTE)
Consider access to byte sized memory slow

mrelax
Target RejectNegative Mask(RELAX)
Enable linker relaxing

mh
Target Mask(H8300H)
Generate H8/300H code

mn
Target Mask(NORMAL_MODE)
Enable the normal mode

malign-300
Target RejectNegative Mask(ALIGN_300)
Use H8/300 alignment rules