NEC UPD703116 User Manual page 639

Examples of DMA initialization on 32-bit transfer, 16-bit transfer, and 8-bit transfer are shown below.
(a) Example of 32-bit transfer DMA initialization
-- DMA INITIAL
mov
st.h
mov
st.h
mov
st.h
mov
st.h
mov
st.h
mov
st.h
mov
st.h
mov
st.h
mov
st.b
st.b
mov
st.b
mov
st.b
CHAPTER 12 NBD FUNCTION (
-–
0x0000FA64 , r24 -- DMACH0 Source
r24 , DSAL0[r0]
0x00000FFF , r24 –- DMACH0 Source
r24 , DSAH0[r0]
0x0000F088 , r24 –- DMACH0 Destination Address –-
r24 , DDAL0[r0]
0x00000FFF , r24 –- DMACH0 Destination Address –-
r24 , DDAH0[r0]
0x0000400c , r24 -– DMACH0 Block MODE 16Bit MODE –-
r24 , DADC0[r0]
0x0000800c , r24 -– DMACH1 Block MODE 32Bit MODE –-
r24 , DADC1[r0]
0x00000003 , r24 -– DMACH0 Block MODE 16Bit∗4 --
r24 , DBC0[r0]
0x00000000 , r24 -– DMACH1 Block MODE 32Bit∗1 --
r24 , DBC1[r0]
0x00000009 , r24 -– DMACH0&1 DMA ready --
r24 , DCHC0[r0]
r24 , DCHC1[r0]
0x00000035 , r24 -– DMACH0 Trigger –-
r24 , DTFR0[r0]
0x00000036 , r24 -– DMACH1 Trigger –-
r24 , DTFR1[r0]
User's Manual U14492EJ5V0UD
µ
PD70F3116)
Address –-
Address –-
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