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NSC800 데이터시트(PDF) 57 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
부품명 NSC800
상세설명  NSC800TM High-Performance Low-Power CMOS Microprocessor
PDF  76 Pages
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제조업체  NSC [National Semiconductor (TI)]
홈페이지  http://www.national.com
Logo NSC - National Semiconductor (TI)

NSC800 데이터시트(HTML) 57 Page - National Semiconductor (TI)

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1214 Program Control (Continued)
RETN
Unconditional return from non-maskable interrupt handling
subroutine Functionally similar to RET instruction except
interrupt enable state is restored to that prior to non-mask-
able interrupt
PCL
w (SP)
No flags affected
PCH
w (SP a 1)
SP
w SP a 2
IFF1
w IFF2
76543210
11101101
01000101
Timing
M cycles
4
T states
14 (4 4 3 3)
Addressing Mode
Register Indirect
RESTARTS
RST
P
The present contents of the PC are pushed onto the memo-
ry stack and the PC is loaded with dedicated program loca-
tions as determined by the specific restart executed
(SP b 1)
w PCH
No flags affected
(SP b 2)
w PCL
SP
w SP b 2
PCH
w 0
PCL
w P
76543210
1
1t1
1
1
Timing
M cycles
3
T states
11 (5 3 3)
Addressing Mode
Modified Page Zero
p
00H
08H
10H
18H
20H
28H
30H
38H
t
000
001
010
011
100
101
110
111
57



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