Buffer Memory Access - Toshiba AS311 User Manual

4.2.2

Buffer memory access

T3 can read the AS311's buffer memory contents by using READ instruction (FUN237).
Also, T3 can write data into the buffer memory by using WRITE instruction (FUN238).
READ instruction (FUN237)
Expression:
[ (A) READ (B)
Operands:
(A):
(B):
(B)+1:
(C):
Example:
R0100
When R0100 is ON, 64 words of buffer memory data starting with address 128
are read from the AS311 which is allocated to XW000. And the data are stored
in D1000 and after.
(C) ]
I/O register (XW/YW) assigned to the AS311
Starting address of the buffer memory to be read
Number of words to be read (max. 256)
Starting register of the destination
[ 00128 MOV D5000 ] [ 00064 MOV D5001 ]
[ XW000 READ D5000
4. Register Configuration
D1000 ]
27
User's Manual