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参数资料
| 型号： | MAQ2910NL |
| 厂商： | Electronic Theatre Controls, Inc. |
| 英文描述： | RADIATION HARD MICROPROGRAM CONTROLLER |
| 中文描述： | 辐射硬微程序控制器 |
| 文件页数： | 3/16页 |
| 文件大小： | 216K |
| 代理商： | MAQ2910NL |
MA2910
3
FAIL CCEN =
PASS CCEN =
HIGH & CC = REGISTER/ ENABLE
LOW
CONTROL
Y
STACK
I
3
- I
0
MNEMONIC
NAME
REGISTER LOW & CC =
/CONTROL HIGH
Y
STACK
0
1
2
3
4
JZ
CJS
JMAP
CJP
PUSH
JUMP ZERO
COND JS P PL
JUMP MAP
COND JUMP PL
PUSH/COND LD
CNTR
COND JSB R/PL
VECTOR
COND JUMP
COND JUMP R/PL
REPEAT LOOP
CNTR
≠
0 .
REPEAT PL,
CNTR
≠
0
COND RTN
COND JUMP PL
& POP
LD CNTR &
CONTINUE
TEST END LOOP
CONTINUE
THREE-WAY
BRANCH
X
X
X
X
X
0
PC
D
PC
PC
CLEAR
HOLD
HOLD
HOLD
PUSH
O
D
D
D
PC
CLEAR
PUSH
HOLD
HOLD
PUSH
HOLD
HOLD
HOLD
HOLD
Note 1
PL
PL
MAP
PL
PL
5
JSRP
X
R
PUSH
D
PUSH
HOLD
PL
6
7
8
CJV
JRP
RFCT
X
X
≠
0
= 0
≠
0
= 0
X
X
PC
R
F
PC
D
PC
PC
PC
HOLD
HOLD
HOLD
POP
HOLD
HOLD
HOLD
HOLD
D
D
F
PC
D
PC
F
D
HOLD
HOLD
HOLD
POP
HOLD
HOLD
POP
POP
HOLD VECT
HOLD
DEC
HOLD
DEC
HOLD
HOLD
HOLD
PL
PL
PL
PL
PL
PL
PL
9
RPCT
10
11
CRTN
CJPP
12
LDCT
X
PC
HOLD
PC
HOLD
LOAD
PL
13
14
15
LOOP
CONT
TWB
X
X
≠
0
= 0
F
PC
F
D
HOLD
HOLD
HOLD
PO P
PC
PC
PC
PC
POP
HOLD
POP
POP
HOLD
HOLD
DEC
HOLD
PL
PL
PL
P L
Note 1: If
CCEN
= LOW &
CC
= HIGH, hold, else load.
FULL
(stack full)
The active low output FULL indicates that 9 items have
been loaded onto the stack .
PL
,
MAP
&
VECT
(pipeline, map and vector)
These active low outputs are set according to the
instruction being executed. At any time only one is active.
They may be used to select from one of three possible
external sources for microprogramme jumps, being used
directly as three-state enables for these sources.
Typically:
PL
enables the primary source of
microprogramme jumps, usually part of a pipeline register;
MAP
enables a PROM which maps an instruction to a
microcode starting location;
VECT
enables an optional third
source, after a vector from DMA or interrupt source.
Y (0 to 11) (Microcode address)
This is a 12 bit wide tristate output bus. It carries the
microcode address generated according to the instruction
read in from the I bus. OE can be used to put the bus in a high
impedance state. This allows another to take control of the
microcode address bus.
OE
(Output enable)
This active low input is used to enable the 12 lines of the Y
bus.
CP (Clock Pulse)
A LOW-to-HlGH transition on this input is used to trigger all
state changes within the device.
Figure 2: Table of Instructions
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