Freescale-semiconductor StarCore SC140 Manual do Utilizador descarregar pdf (Página 405)

100

101

BMTSTC.W

SC140 DSP Core Reference Manual A-91

BMTSTC.W Bit-Masked Test a BMTSTC.W

16-Bit Operand in Memory If Clear (BMU)

Description

These operations use an unsigned 16-bit immediate data mask to determine if all selected bits in an

operand are cleared. If all the selected bits are cleared, the T bit is set; if not, the T bit is cleared. The

absolute addresses, offsets, and address register values must be word-aligned.

Operation Assembler Syntax

if (#u16 & (SP-u5)) == $0000, then 1→T else 0→T

BMTSTC.W #u16,(SP–u5){0 ≤ u16 < 2

}

{0 ≤ u5 < 64,W}

if (#u16 & (SP+s16)) == $0000, then 1→T else 0→T

BMTSTC.W #u16,(SP+s16){0 ≤ u16 < 2

}

{–2

≤ s16 < 2

,W}

if (#u16 & (Rn)) == $0000, then 1→T else 0→T

BMTSTC.W #u16,(Rn){0 ≤ u16 < 2

}

if (#u16 & (a16)) == $0000, then 1→T else 0→T

BMTSTC.W #u16,(a16){0 ≤ u16 < 2

}

{0 ≤ a16 < 2

,W}

BMTSTC.W #u16,(SP–u5)

Tests selected bits in the contents of a memory address pointed to by the active stack pointer (SP) with an

unsigned 5-bit offset.

BMTSTC.W #u16,(SP+s16)

Tests selected bits in the contents of a memory address pointed to by the active stack pointer (SP) with a

signed 16-bit offset.

BMTSTC.W #u16,(Rn)

Tests selected bits in the contents of a memory address pointed to by an address register (Rn).

BMTSTC.W #u16,(a16)

Tests selected bits in the contents of a memory address pointed to by an absolute 16-bit address.

1 2 ... 400 401 402 403 404 405 406 407 408 409 410 ... 759 760

Comentários a estes Manuais

Sem comentários

Freescale-semiconductor StarCore SC140 Manual do Utilizador Página 405

Comentários a estes Manuais

Manuais e produtos relacionados com Hardware Freescale-semiconductor StarCore SC140