Echelon Neuron Manual do Utilizador descarregar pdf (Página 196)

push #d’40 ; (d’40, d’50, 0)

call _muls_8_16 ; (d’208, 7)

_mul8l (Multiply, 8 Bit with 16 Bit Result)

This function multiplies two unsigned integers to produce a 16-bit result.

Stack Transformation: (a, b -- (a*b)(2))

Location: Near

Registers Affected: P0, P3

Example:

This example multiplies 50 times 40.

push #d’50 ; (d’50)

push #d’40 ; (d’40, d’50)

call _mul8l ; (d’208, 7)

_mul8ls (Multiply Signed, 8 Bit with 16 Bit Result)

This function multiplies two signed integers to produce a 16-bit signed result.

Stack Transformation: (a, b -- (a*b)(2))

Location: Near

Registers Affected: P0, P3

Example:

This example multiplies 50 times -40.

push #d’50 ; (d’50)

push #@lb(-d’40) ; (-d’40, d’50)

call _mul8ls ; (d’48, d’248)

_not16 (Not, 16 Bit)

This function returns the one’s complement (the bitwise NOT) of a 16-bit integer.

Stack Transformation: (a(2) -- ~a(2))

Location: Near

Registers Affected: None

Example:

This example returns the one’s complement of 8.

186 System-Provided Functions

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Echelon Neuron Manual do Utilizador Página 196