MCS11 datasheet(84/108 Pages) PADAUK

84 / 108 page

MCS11

ADC-Type Enhanced FPPA

TM Controller

Page 84 of 108

PDK-DS-MCS11_v020 – Apr. 20, 2018

pushw

word

Move the source data from the memory in word to memory that address specified in the

stack pointer (pushw word). It needs 2T to execute this instruction.

Example:

pushw

word;

Result:

[sp] ← word ;

sp ← sp + 2 ;

Affected flags: 『N』Z

『N』C

『N』AC

『N』OV

Application Example:

------------------------------------------------------------------------------------------------------------------------

word

data ;

// declare data in RAM

…

mov

a, 0x55 ;

mov

ld@data, a ;

// move 0x55 to data (LSB)

mov

a, 0xaa ;

mov

hd@data, a ;

// move 0xaa to data (MSB)

pushw

data ;

// move (0xaa, 0x55) to stack memory

…

------------------------------------------------------------------------------------------------------------------------

pushw

pcN

Store the program counter of Nth FPP unit to the memory which address is specified in the

stack pointer of current executing FPP unit (pushw pcN). It needs 2T to execute this

instruction.

Example:

pushw

pc3;

Result:

[sp] of FPP

0 ← pc of FPP3 ;

sp of FPP

0 ← sp of FPP0 + 2 ;

Affected flags: 『N』Z

『N』C

『N』AC

『N』OV

Application Example:

------------------------------------------------------------------------------------------------------------------------

fpp0_loop:

…

pushw

pc1 ;

// store PC1 to stack memory

…

goto

fpp0_loop ;

fpp1_loop:

…

goto

fpp1_loop ;

------------------------------------------------------------------------------------------------------------------------

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