DP80390 datasheet(68/84 Pages) DCD

68 / 84 page

DP80390 Instructions set details

- 68 -

All trademarks mentioned in this document

http://www.DigitalCoreDesign.com

are trademarks of their respective owners.

http://www.dcd.pl

3.32.

RET *

3.32.1.

LARGE

Function:

Return from subroutine

Description:

RET pops the PC successively from the stack, decrementing the stack

pointer by two. Program execution continues at the resulting address,

generally the instruction immediately following an ACALL or LCALL. No

flags are affected.

Operation:

(PC15-8)

← ((SP))

(SP)

← (SP) - 1

(PC7-0)

← ((SP))

(SP)

← (SP) - 1

Bytes:

Cycles:

Encoding:

3.32.2.

FLAT

Function:

Return from subroutine

Description:

RET pops the PC successively from the stack, decrementing the stack

pointer by three. Program execution continues at the resulting address,

generally the instruction immediately following an ACALL or LCALL. No

flags are affected.

Operation:

(PC23-16)

← ((SP))

(SP)

← (SP) - 1

(PC15-8)

← ((SP))

(SP)

← (SP) - 1

(PC7-0)

← ((SP))

(SP)

← (SP) - 1

Bytes:

Cycles:

Encoding:

* instruction modified regarding to standard 80C51

DP80390 Datasheet(PDF) 68 Page - Digital Core Design

DP80390 Datasheet(HTML) 68 Page - Digital Core Design

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84

Datasheet Download

Link URL