Intel 2920 Design Handbook page 36

THE 2920 SIGNAL PROCESSOR
Table 3-6. Analog Instruction Opcodes
a. Basic Codes
Code MNEM Function
ADF
1 0
o
0 IN (k), ADK= 0-3 Acquire input k
o
0 NOP , ADK=4 No operation
o
0 EOP ,ADK=5 Return EPROM to Location 0
o
0
CVTS ,ADK=6 Convert Sign Position (MSB)
o
0 CNDS ,ADK= 7 Conditional Arith. of Sign Bit (MSB)
1 0 CVT (k), ADK=0-7 A to 0 convert bit k*
o
1
OUT (k), ADK=0-7 Output Channel k
1 1 CND (k), ADK= 0-7 Condo Artih., Test DAR bit k*
b. Code Assignment and Mnemonics
ADK
ADF 1,0=
210 00 01 10
11
000 INO OUTO CVTO CNDO
001 INI OUTl CVTl CNDI
010 IN2 OUT2 CVT2 CND2
o
1 1 IN3 OUT3 CVT3 CND3
100 NOP OUT4 CVT4 CND4
1 0 1 EOP OUT5 CVT5 CND5
1 0 CVTS OUT6 CVT6 CND6
1 I CNDS OUT7 CVT7 CND7
*Note-The DAR bits are designated S, 7, 6, .... 0, where S is the sign bit, 7 the next most significant bit, etc. Conversion of
bit k consists of setting bit k to a value determined by the comparator, and bit k-l equal to a logic 1.
3-11