Intel UPI- 41A User Manual page 19

Instruction
S1 S2
Fetch Increment
IN A Pp
Instruction Program Counter
Fetch Increment
OUTL Pp A
Instruction Program Counter
Fetch Increment
ANL Pp DATA Instruction Program
Counter
Fetch Increment
ORL Pp DATA Instruction Program
Counter
Fetch Increment
MOVD A Pp
Instruction Program Counter Opcode Address
Fetch Increment
MOVD Pp A
Instruction Program Counter Opcode Address
Fetch Increment
D Pp A
Instruction Program Counter Opcode Address
Fetch Increment
ORLD Pp A
Instruction Program Counter Opcode Address
Fetch Increment
J (Conditional) Instruction Program Counter
Fetch Increment
MOV STS A
Instruction Program Counter
Fetch Increment
IN A DBB
Instruction Program Counter
Fetch Increment
OUT DBB A
Instruction Program Counter
STRT T Fetch Increment
STRT CNT Instruction Program Counter
Fetch Increment
STOP TCNT
Instruction Program Counter
Fetch Increment
EN I
Instruction Program Counter
Fetch Increment
DIS I
Instruction Program Counter
EN DMA Fetch Increment
Instruction Program Counter
Fetch Increment
EN FLAGS
Instruction Program Counter
Figure 2-11 Recommended Crystal and L-C Connections
UPI-41A 41AH 42 42AH USER'S MANUAL
Table 2-3 Instruction Timing Diagram
CYCLE 1
S3 S4
Increment
Timer
Increment
Timer
Increment Read Port
Timer
Increment Read Port
Timer
Output Increment
Timer
Output Increment Output Data
Timer To P2 Lower
Output Increment
Timer
Output Increment
Timer
Sample Increment
Condition Timer
Increment
Timer Status Register
Increment
Timer
Increment
Timer
Enable
Interrupt
Disable
Interrupt
DMA Enabled
DRQ Cleared
OBF IBF
Output Enabled
231318– 48
CYCLE 2
S5 S1 S2
Read Port
Output
To Port
Fetch
Immediate
Data
Fetch
Immediate
Data
Read
P2 Lower
Output
Data
Output
Data
Fetch
Immediate Data
Update
Output
To Port
Start
Counter
Stop
Counter
S3 S4 S5
Increment Output
Program To Port
Counter
Increment Output
Program To Port
Counter
Update
Program
Counter
231318 –15
15