TMP86CS44UG datasheet(49/172 Pages) TOSHIBA

49 / 172 page

Page 39

TMP86CS44UG

3.4.2.1 Using PUSH and POP instructions

If only a specific register is saved or interrupts of the same source are nested, general-purpose registers

can be saved/restored using the PUSH/POP instructions.

Figure 3-3 Save/store register using PUSH and POP instructions

3.4.2.2 Using data transfer instructions

To save only a specific register without nested interrupts, data transfer instructions are available.

Example :Save/store register using PUSH and POP instructions

PINTxx:

PUSH

; Save WA register

(interrupt processing)

POP

; Restore WA register

RETI

; RETURN

Example :Save/store register using data transfer instructions

PINTxx:

(GSAVA), A

; Save A register

(interrupt processing)

A, (GSAVA)

; Restore A register

RETI

; RETURN

PCL

PCH

PSW

At acceptance of

an interrupt

At execution of

PUSH instruction

At execution of

RETI instruction

At execution of

POP instruction

b-4

b-3

b-2

b-1

PCL

PCH

PSW

PCL

PCH

PSW

Address

(Example)

b-5

TMP86CS44UG 데이터시트(PDF) 49 Page - Toshiba Semiconductor

TMP86CS44UG 데이터시트(HTML) 49 Page - Toshiba Semiconductor

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 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

데이터시트 다운로드

링크 URL