FX1S Datasheet, PDF (298/480 Pages) Mitsubishi Electric Semiconductor – FX1S

ÈÍÑÒÐÓÊÖÈÈ ÂÂÎÄÀ/ÂÛÂÎÄÀ
ÑÏÅÖÈÀËÜÍÛÅ FNC-ÈÍÑÒÐÓÊÖÈÈ
 ÏÊ èìååòñÿ âîçìîæíîñòü ïðåðûâàíèÿ âûïîëíåíèÿ èíñòðóêöèè ïîñðåäñòâîì ñïåöèàëüíîãî
áèòà Ì8028:
Ïðåðûâàíèå áëîêèðîâàíî (M8028 = 0)
Ïðåðûâàíèå ðàçðåøåíî (M8028 = 1)
Ïåðåõîä íà ïîäïðîãðàììó îæèäàåò îêîí÷àíèÿ
âûïîëíåíèÿ èíñòðóêöèè FROM
Ïåðåõîä íà ïîäïðîãðàììó âûïîëíÿåòñÿ íåìåäëåííî.
Ïðè ïåðåõîäå ïî ïðåðûâàíèþ âîçìîæíà íåáîëüøàÿ
çàäåðæêà, íå áîëåå ÷åì (800ì+200)ìêð ñåê, ãäå
ì=êîëè÷åñòâî 32 áèòíûõ ñëîâ
Ãàðàíòèðóåò âûïîëíåíèå èíñòðóêöèè FROM â
ïðîãðàììå ïðåðûâàíèÿ, íå îêàçûâàÿ âëèÿíèå íà äðóãèå
èíñòðóêöèè
Ïåðåõîä ïî ïðåðûâàíèþ ïðîèñõîäèò íåìåäëåííî.
Ïîñëå âîçâðàòà èç ïðîãðàììû ïðåðûâàíèÿ
âîçîáíîâëÿåòñÿ ðàáîòà èíñòðóêöèè FROM. Åñëè â
ïðîãðàììå ïðåðûâàíèÿ çàïðîãðàììèðîâàíà
èíñòðóêöèÿ FROM, òî äàííûé ðåæèì áóäåò âûïîëíÿòñÿ
íå êîððåêòíî.
M8028 íå äîëæåí èñïîëüçîâàòüñÿ åñëè íåîáõîäèìà
âðåìåííàÿ ñèíõðîíèçàöèÿ.
ÏÐÈÌÅÐ Çàïèñü äàííûõ (ÒÎ)
X11
n1 n2 [D+] n3
TO K0 K1 D1 K4
Ðèñ. 7-27.
Ïðèìåð ïðîãðàììèðîâàíèÿ ÒO-èíñòðóêöèè
ÓKÀÇÀÍÈÅ
C000266C
Ïî ïðèìåðó, ïîêàçàííîìó íà ðèñóíêå, D1...D4 ïåðåäàþòñÿ ê àäðåñàì áóôåðíîé ïàìÿòè #1...#4
ñïåöèàëüíîãî ìîäóëÿ, íà÷èíàÿ ñ ïîçèöèîííîãî íîìåðà 0. Çíà÷åíèå àäðåñàöèè ïðåäñòàâëåíî
ïî îòäåëüíîñòè ñëåäóþùåì îáðàçîì:
Ðèñ. 7-28.
ÏÊ
Ñïåö. ìîäóëü
Àäðåñàöèÿ ïðè TO-èíñòðóêöèè
Bfm #0
D1
Bfm #1
D2
Bfm #2
D3
Bfm #3
D4
Bfm #4
Bfm #31
C000267C
Ħ
Åñëè äîëæíî ïåðåäàâàòüñÿ òîëüêî ñîäåðæàíèå àäðåñîâ áóôåðíîé ïàìÿòè, òî íóæíî
çàíåñòè â n3 çíà÷åíèå 1.
7 – 26
MITSUBISHI ELECTRIC