FX1S Datasheet, PDF (219/480 Pages) Mitsubishi Electric Semiconductor – FX1S

ÏÐÈÊËÀÄÍÛÅ ÈÍÑÒÐÓÊÖÈÈ
ÎÏÅÐÀÖÈÈ Ñ ÄÀÍÍÛÌÈ
6.6.4
ÑÓÌÌÀ ÀÊÒÈÂÍÛÕ ÁÈÒ (SUM)
SUM (S+) (D+)
S+
K, H, KnX, KnY, KnM,
KnS, T, C, D, V, Z
D+
KnY, KnM, KnS,
T, C, D, V, Z
SUM
FNC 43
Îïðåäåëåíèå èñïîëüçóåìûõ áèòîâ
CPU
FX1S
FX1N
FX2N FX2NC
©
©
Èìï. èíñòðóêöèÿ (P) Îáðàáîòêà Øàãè ïðîãðàììû
16 Bit 32 Bit SUM, SUMP 7
©
©
DSUM,
DSUMP
9
ÓÊÀÇÀÍÈÅ
ÏÐÈÌÅÐ
ÔÓÍÊÖÈß
Îïðåäåëåíèå êîëè÷åñòâà èñïîëüçóåìûõ áèòîâ â ñëîâå äàííûõ.
ÎÏÈÑÀÍÈÅ
b Îïðåäåëÿåòñÿ êîëè÷åñòâî âêëþ÷åííûõ áèòîâ â (S+).
b Îïðåäåëåííîå çíà÷åíèå çàíîñèòñÿ â (D+).
Åñëè îáðàáàòûâàåòñÿ 32-õ áèòíàÿ îïåðàöèÿ, òî â ñòàðøèå 16 áèòîâ ((D+) + 1) îïåðàíäîâ öåëè
(D+) óñòàíàâëèâàþòñÿ â íîëü, òàê êàê ìàêñèìàëüíîå ÷èñëî âêëþ÷åííûõ áèòîâ â (S+)
ñîñòàâëÿåò 32.
SUM-èíñòðóêöèÿ
X0
[ S+ ] [ D+ ]
SUM D0 D2
Ðèñ. 6-75.
Ïðèìåð ïðîãðàììèðîâàíèÿ äëÿ
îïðåäåëåíèÿ âêëþ÷åííûõ áèò â (S+)
D0
0101010101010111
b15
b0
D2
0000000000001001
. .8421
C000141C
Ħ
Ïðîãðàììèðîâàíèå FX1S/FX1N/FX2N/FX2NC
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