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1 9.12.2.2 Register Names
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1 You can use predefined symbols of the form 'rNh' and 'rNl' to refer to
1 the H8/300 registers as sixteen 8-bit general-purpose registers. N is a
1 digit from '0' to '7'); for instance, both 'r0h' and 'r7l' are valid
1 register names.
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1 You can also use the eight predefined symbols 'rN' to refer to the
1 H8/300 registers as 16-bit registers (you must use this form for
1 addressing).
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1 On the H8/300H, you can also use the eight predefined symbols 'erN'
1 ('er0' ... 'er7') to refer to the 32-bit general purpose registers.
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1 The two control registers are called 'pc' (program counter; a 16-bit
1 register, except on the H8/300H where it is 24 bits) and 'ccr'
1 (condition code register; an 8-bit register). 'r7' is used as the stack
1 pointer, and can also be called 'sp'.
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