S U S P E N D A P P L I C A T I O N D M A - Intel 81342 Developer's Manual

5 . 1 1 . 3

S u s p e n d A p p l i c a t i o n D M A

T h e A p p l i c a t i o n D M A u n i t p r o v i d e s t h e a b i l i t y t o s u s p e n d t h e c u r r e n t s t a t e w i t h o u t
l o s i n g s t a t u s i n f o r m a t i o n . T h e A D M A r e s u m e s w i t h o u t r e q u i r i n g a p p l i c a t i o n s o f t w a r e t o
s a v e t h e c u r r e n t c o n f i g u r a t i o n .
o n g o i n g o p e r a t i o n a n d r e s t a r t i n g .
F i g u r e 7 4 . P s e u d o C o d e : S u s p e n d A p p l i c a t i o n D M A
ACCR = 0x0000 0000 ; Suspend ongoing ADMA transfer
;Suspend Application DMA
ACCR = 0x0000 0001 ; Resume ADMA transfer
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I n t e l 8 1 3 4 1 a n d 8 1 3 4 2 I / O P r o c e s s o r s
D e v e l o p e r ' s M a n u a l
5 1 2
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I n t e l 8 1 3 4 1 a n d 8 1 3 4 2 — A p p l i c a t i o n D M A U n i t
F i g u r e 7 4 d e s c r i b e s p s e u d o - c o d e f o r s u s p e n d i n g
D e c e m b e r 2 0 0 7
O r d e r N u m b e r : 3 1 5 0 3 7 - 0 0 2 U S