4508 datasheet(85/142 Pages) RENESAS

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4508 Group

Rev.1.02

2006.12.22

page 85 of 140

REJ03B0148-0102

BM a (Branch and Mark to address a in page 2)

010a6

1aa

–

Grouping:

Subroutine call operation

Description: Call the subroutine in page 2 : Calls the

subroutine at address a in page 2.

Note:

Subroutine extending from page 2 to an-

other page can also be called with the BM

instruction when it starts on page 2.

Be careful not to over the stack because the

maximum level of subroutine nesting is 8.

Operation:

(SP)

← (SP) + 1

(SK(SP))

← (PC)

(PCH)

← 2

(PCL)

← a6–a0

BML p, a (Branch and Mark Long to address a in page p)

00110p4

–

Grouping:

Subroutine call operation

Description: Call the subroutine : Calls the subroutine at

address a in page p.

Note:

p is 0 to 31.

Be careful not to over the stack because the

maximum level of subroutine nesting is 8.

Operation:

(SP)

← (SP) + 1

(SK(SP))

← (PC)

(PCH)

← p

(PCL)

← a6–a0

BMLA p (Branch and Mark Long to address (D) + (A) in page p)

0000110000

030

–

Grouping:

Subroutine call operation

Description: Call the subroutine : Calls the subroutine at

address (DR2 DR1 DR0 A3 A2 A1 A0)2 speci-

fied by registers D and A in page p.

Note:

p is 0 to 31.

Be careful not to over the stack because the

maximum level of subroutine nesting is 8.

CLD (CLear port D)

0000010001

011

–

Grouping:

Input/Output operation

Description: Sets (1) to port D.

Operation:

(D)

← 1

100a6

2aa

Operation:

(SP)

← (SP) + 1

(SK(SP))

← (PC)

(PCH)

← p

(PCL)

← (DR2–DR0, A3–A0)

100p4

00p3

2pp

MACHINE INSTRUCTIONS (INDEX BY ALPHABET) (continued)

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