4571 datasheet(108/126 Pages) RENESAS

108 / 126 page

Rev.1.02

May 25, 2007

Page 108 of 124

REJ03B0179-0102

4571 Group

Skip condition

Detailed description

(A) = (M(DP))

−

Skips the next instruction when the contents of register A is equal to the contents of M(DP).

Executes the next instruction when the contents of register A is not equal to the contents of M(DP).

(A) = n

n = 0 to 15

−

Skips the next instruction when the contents of register A is equal to the value n in the immediate field.

Executes the next instruction when the contents of register A is not equal to the value n in the immediate

field.

−−

Branch within a page : Branches to address a in the identical page.

−−

Branch out of a page : Branches to address a in page p.

−−

Branch out of a page : Branches to address (DR2 DR1 DR0 A3 A2 A1 A0)2 specified by registers D and A in

page p.

−−

Call the subroutine in page 2 : Calls the subroutine at address a in page 2.

−−

Call the subroutine : Calls the subroutine at address a in page p.

−−

Call the subroutine : Calls the subroutine at address (DR2 DR1 DR0 A3 A2 A1 A0)2 specified by registers D

and A in page p.

−−

Returns from interrupt service routine to main routine.

Returns each value of data pointer (X, Y, Z), carry flag, skip status, NOP mode status by the continuous

description of the LA/LXY instruction, register A and register B to the states just before interrupt.

−−

Returns from subroutine to the routine called the subroutine.

No conditional skip

−

Returns from subroutine to the routine called the subroutine, and skips the next instruction at with no

condition.

4571 Datasheet(PDF) 108 Page - Renesas Technology Corp