ST20CX 查看數據表（PDF） - STMicroelectronics

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ST20CX

Instruction Set Reference Manual

STMicroelectronics 

call n

call n

call

Code: Function 9

Description: Adjust workspace pointer, save evaluation stack, and call subroutine at

specified b yte offset.

Definition:

Wptr′ ← Wptr @ -4

word′[Wptr′ @ 0]

word′[Wptr′ @ 1]

word′[Wptr′ @ 2]

word′[Wptr′ @ 3]

← Iptr

← Areg

← Breg

← Creg

Iptr′ ← next instruction + n

Areg′ ← Iptr

Breg′ ← undefined

Creg′ ← undefined

Error signals: none

Comments:

Primary instruction.

See also: ajw gcall ret

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