Chapter 9 Instruction list
CPU ADAM 821x
Command
Operand
Parameter
Status word
Function
Length
in
BR
CC1 CC0 OV OS OR STA RLO /FC
words
: Instruction depends on
: Instruction influences
8-14
ADAM 8000 Manual CPU 821x – Rev 1.1
Program display and null instruction
instructions
Program display and null
operation instructions
The status word is not affected.
BLD
0 ... 255
Program display instruction:
1
is treated by the CPU like a null operation instruction.
NOP 0
Null operation instruction
1
1
Edge-triggered instructions
Edge-triggered instructions
Status word
Detection of an edge change. The current
signal state of the RLO is compared with the
signal state of the instruction or edge bit
memory.
FP detects a change in the RLO from "0" to "1".
FN detects a change in the RLO from "1" to
"0".
FP I/Q
a.b 0.0 to 127.7
BR
CC1 CC0 OV OS OR STA RLO /FC
Detecting the positive edge in the RLO. The bit addressed
2
M
a.b 0.0 to 1023.7 - - - - - - - Y - in the instruction is the auxiliary edge bit memory.
2
L
a.b 0.0 to 1043.7 - - - - - 0 Y Y 1 2
DBX
a.b 0.0 to 8191.7
2
DIX
a.b 0.0 to 8191.7
2
c
[AR1,m]
2
c
[AR2,m]
2
[AR1,m]
2
[AR2,m]
2
Parameter
2
FN I/Q
a.b 0.0 to 127.7
BR
CC1 CC0 OV OS OR STA RLO /FC
Detecting the negative edge in the RLO. The bit addressed
2
M
a.b 0.0 to 1023.7 - - - - - - - Y - in the instruction is the auxiliary edge bit memory.
2
L
a.b 0.0 to 1043.7 - - - - - 0 Y Y 1 2
DBX
a.b 0.0 to 8191.7
2
DIX
a.b 0.0 to 8191.7
2
c
[AR1,m]
2
c
[AR2,m]
2
[AR1,m]
2
[AR2,m]
2
Parameter
2
