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TRAFFIC LIGHTS INTERFACE

1

CONTENTS

PAGE NO

1.0 Introduction 2

2.0 Description of the Circuit 2

3.0 Installation 5

4.0 Demonstration Examples 6

4.1 Demonstration Program for MPS 85-3 Trainer 7

4.2 Demonstration Program for ESA 85-2 Trainer 10

4.3 Demonstration Program for ESA-80 Trainer 13


4.5 Demonstration Program for ESA-68K Trainer 19

4.6 Demonstration Program for ESA 86/88-2 Trainer 21



4.9 Demonstration Program for ESA 68K-2 Trainer 29


4.11 Demonstration Program for ESA 86/88-3 Trainer 34

4.12 Demonstration Program for ESA-51E Trainer 35

4.13 Demonstration Program for ESA 86/88E Trainer 37

Appendix A : Schematic Diagram

Appendix B : Placement Diagram


2


1.0 INTRODUCTION

Electro Systems Associates Private Limited (ESA) manufactures trainers for most of the popular

microcomputers viz 8085, Z-80, 6502, 8086/8088 and 68000. ESA offers a variety of modules

which can be interfaced to these trainers. These modules can be effectively used for

teaching/training in the laboratories.

The present manual describes one such interface module traffic lights interface. The interface

simulates the control and operation of traffic lights at a junction of four roads. The interface provides

a set of 6 LED indicators at each of the four corners. Each of these LEDs can be controlled by a port

line.

Thus the interface allows the user to simulate a variety of traffic situations using appropriate

software routines. The sample programs provided in section 4 of this manual simulate some

interesting traffic movement sequences.

This interface can be connected to any of ESA trainers viz., MPS 85-3, ESA 85-2, ESA 80, ESA 65,

ESA 68K, ESA 86/88-2, ESA 31, ESA 51, ESA 86/88-3 & ESA 51E.

2.0 DESCRIPTION OF THE CIRCUIT

Please refer to the schematic diagram of this interface presented at the end of this manual. As already

mentioned, the interface provides a set of six LEDs at each of the four corners of a four road junction.

The organization of these LEDs is identical at each of the four corners. Hence, for simplicity, the

organization is described below with reference to the LEDs at SOUTH-WEST corner only.

The LEDs at SOUTH-WEST corner are organized as follows:

RED

A

R S L

DL PEDESTRIANS DL SOUTH


3

RED : Referred to as SOUTH RED henceforth

A : Referred to as SOUTH AMBER henceforth

L : Referred to as SOUTH LEFT henceforth

S : Referred to as SOUTH STRAIGHT henceforth

R : Referred to as SOUTH RIGHT henceforth

DL : Referred to as SOUTH PEDESTRIAN henceforth (Please note that DL

refers to a set of two LEDs, one on either side of the road).

Of these , the first five LEDs will be ON or OFF depending on the state of the corresponding port line

(LED is ON if the port line is Logic HIGH and LED is OFF if the port line is Logic LOW). The last

one marked as DL is a set of two dual-colour LEDs and they both will be either RED or GREEN

depending on the state of the corresponding port line (RED if the port line is Logic HIGH and

GREEN if the port line is Logic LOW).

There are four such sets of LEDs and these are controlled by 24 port lines. Each port line is inverted

and buffered using 7406 (open collector inverter buffers) and is used to control an LED. Dual-colour

LEDs are controlled by a port line and its complement.

The 24 LEDs and their corresponding port lines are summarized below

LED Port Line

SOUTH RED PA3

AMBER PA2

LEFT PA0

STRAIGHT PC3

RIGHT PA1

PEDESTRIAN PC6

EAST RED PA7

AMBER PA6

LEFT PA4

STRAIGHT PC2

RIGHT PA5

PEDESTRIAN PC7

NORTH RED PB3

AMBER PB2

LEFT PB0

STRAIGHT PC1

RIGHT PB1

PEDESTRIAN PC4

WEST RED PB7

AMBER PB6

LEFT PB4


4

STRAIGHT PC0

RIGHT PB5

PEDESTRIAN PC5

User can assign any meaningful interpretation to these LEDs and then develop software accordingly.

Usually, the interpretation would be as follows:

Vehicles coming from one direction are controlled by the LEDs at the opposite corner.

For example, vehicles coming from NORTH are controlled by the set of LEDs at the SOUTH WEST

corner, as shown below:

Vehicles coming from NORTH can

go left (i.e to EAST) if SOUTH LEFT LED is ON

go right (i.e to WEST) if SOUTH RIGHT LED is ON

go straight (i.e to SOUTH) if SOUTH STRAIGHT LED is ON

Further, the above movements are followed only if SOUTH RED LED is OFF. If SOUTH RED LED

is ON , no movement is allowed for vehicles from north. Pedestrian crossing on SOUTH is allowed

when SOUTH PEDESTRIAN is green and disallowed when it is red. It is obvious that, logically

some combinations can not be allowed. For example, SOUTH RED = OFF, SOUTH STRAIGHT =

ON and SOUTH PEDESTRIAN = GREEN is not allowed (vehicles are allowed to go from NORTH

to SOUTH and pedestrians are allowed to cross on SOUTH). SOUTH AMBER can be ON to indicate

that SOUTH RED is about to change its status from OFF to ON.

The movement of vehicles and pedestrians on the roads can be controlled in a similar way.

As already noted, user can assign a different interpretation if desired. However, the sample programs

presented in the next section are based on the above simple interpretation.

EXAMPLE:

Determine port values for the following traffic situation:

Vehicles from WEST are allowed to go NORTH or EAST.

Vehicles from EAST are allowed to go WEST.

Pedestrian crossing is allowed on SOUTH.

No other vehicle movement /pedestrian crossings are allowed.

Now, as per the above interpretation, the status of the LEDs should be as shown below:

RED AMBER LEFT STRAIGHT RIGHT PEDESTRIAN

SOUTH ON OFF OFF OFF OFF GREEN

EAST OFF OFF ON ON OFF RED

NORTH ON OFF OFF OFF OFF RED

WEST OFF OFF OFF ON OFF RED


5

From the correspondence already between the port lines and LEDs, we can now determine the logic

values for each port line. For example, PA0 should be Logic LOW as SOUTH LEFT RED is OFF.

Determining the values of the other port lines in similar fashion, we can arrive at the following port

values:

PA=18H PB=08H PC=B5H

User can work out the port values for other situations in a similar way.

3.0 INSTALLATION

The interface is housed in a plastic enclosure which has a locking mechanism. To open the cover,

push in the locking mechanism with a finger and lift the cover to open.

The interface module has a 26-pin connector at one edge of the card. This is used for connecting the

interface to the trainer with a flat cable connector set. The +5V DC power required by this

interface is drawn from the trainer via the flat cable connector set.

Table 3-1 shows the connector on various trainers to which this interface can be connected. Some

trainers have two connectors and either may be used for connecting this interface. The

demonstration programs presented in this manual assumes that the interface is connected to

connectors shown in column A. If the connector shown in column B is used, then user has to

change the port addresses appropriately. User may refer to the component layout diagrams of

respective ESA trainers to locate the connectors mentioned here.

TABLE-3.1

MICROPROCESSOR

TRAINER

A B

MPS85-3 J2 J1

ESA85-2 J2 J1

ESA-80 J2 J1

ESA-65 P4

ESA-68K P3 P4

ESA 68K-2 J2 J1

ESA 68-2 J1 J6


6

ESA 196 J1 J2

ESA-31 J2 J1

ESA-51 J10 J7

ESA-51E J5 J3

ESA-86/88-2 J4 J5

ESA-86/88-3 J8 J9

ESA-86/88E J4 J6

4.0 DEMONSTRATION EXAMPLES

After connecting the interface module to the trainer as described above, switch ON the power to the

trainer.

As already noted, this interface module can be connected to any of ESA trainer. Thus listed below are

two sample programs for each of ESA trainer. These programs simulate two different traffic

situations which are described below. Depending on the trainer connected to the interface module,

load appropriate programs, execute them and observe the behavior of the system.

Example 1:

The following sequence of simple traffic situations is simulates:

(Movements other than those listed are not allowed in a given situation)

Vehicles from SOUTH can go NORTH, EAST and WEST.

Vehicles from WEST can go NORTH,SOUTH and EAST.

Vehicles from NORTH can go SOUTH, WEST and EAST.

Vehicles from EAST can go WEST, NORTH and SOUTH.

Pedestrians can cross on all roads.

The system stays in one state until user types a specific key as explained in the example programs.

Then it moves into the next state. After the last state, the system again moves to the first state.

AMBER LED is set ON and then OFF (after suitable delay), at the appropriate direction when the

corresponding red LED changes from OFF to ON state.

Example 2:

The sequence shown below is simulated:

(Movements other than those listed are not allowed in a given situation)

Vehicles from SOUTH can go NORTH, EAST and WEST

Vehicles from WEST can go NORTH

Vehicles from NORTH can go SOUTH

Pedestrians can cross on EAST.


7

Vehicles from EAST can go WEST and SOUTH

Vehicles from WEST can go EAST

Vehicles from SOUTH can go WEST

Pedestrians can cross on NORTH

Vehicles from EAST can go SOUTH

Vehicles from NORTH can go SOUTH and EAST

Vehicles from SOUTH can go NORTH

Pedestrians can cross on WEST

Vehicles from EAST can go WEST

Vehicles from WEST can go EAST and NORTH

Vehicles from NORTH can go EAST

Pedestrians can cross on SOUTH

No vehicle movement

Pedestrians can cross on all four roads

The system moves from one state to another state after fixed time delay. The state transition is

indicated by turning ON all the AMBER LEDs and all pedestrian red LEDs for a fixed duration. The

sequence of the above states are repeated again and again. Hence you must press the RESET key to

allow the monitor program to regain control from this program.

4.1 DEMONSTRATION PROGRAM FOR MPS 85-3 TRAINER

; Simulates the traffic situations described in example 1

; Assume the interface is connected over J2 of the trainer

; The trainer can be in KEYBOARD MODE or SERIAL MODE.

; The traffic system moves from one state to next state

; When "NEXT" key is pressed in KEYBOARD MODE or

; When a comma (",") is typed in SERIAL MODE

ADDRESS OPCODE LABEL MNEMONIC COMMENTS

8800 ORG 8800H

8800 3E 80 MVI A,80H ;Configure 8255 in mode0

8802 D3 43 OUT 43H ;All ports as O/P

8804 0E 05 AGAIN: MVI C,05H ;5 states in a sequence

8806 21 5B 88 LXI H,PORTS ;Table of port values

8809 7E NEXTST:MOV A,M

880A D3 40 OUT 40H ;Port A value

880C 23 INX H

880D 7E MOV A,M


8

880E D3 41 OUT 41H ;Port B value

8810 23 INX H

8811 7E MOV A,M

8812 D3 42 OUT 42H ;Port C value

8814 23 INX H

8815 DB 50 IN 50H ;Read DIP Switch

8817 E6 08 ANI 08H ;Find mode of operation

8819 CA 28 88 JZ WSER ;Serial mode

881C 00 WKBD: NOP ;Keyboard mode

881D CD BA 03 CALL 03BAH ;Read key (monitor

;routine)

8820 FE 1C CPI 1CH ;Compare with code for

;"NEXT" key

8822 C2 1C 88 JNZ WKBD ;Wait until "NEXT" key

;is pressed

8825 C3 33 88 JMP WOVER ;Next state

8828 C5 WSER: PUSH B ;Save counter

8829 CD 12 0C WSER1: CALL 0C12H ;Get character(monitor

;routine)

882C 79 MOV A,C

882D FE 2C CPI 2CH ;Is it a ","

882F C2 29 88 JNZ WSER1 ;No, try again

8832 C1 POP B

8833 7E WOVER: MOV A,M ;Sequence for turning ON

;AMBER LED

8834 D3 40 OUT 40H

8836 23 INX H

8837 7E MOV A,M

8838 D3 41 OUT 41H

883A 23 INX H

883B 7E MOV A,M

883C D3 42 OUT 42H

883E 23 INX H

883F CD 49 88 CALL DELAY ;AMBER ON period

8842 0D DCR C ;All states over?

8843 C2 09 88 JNZ NEXTST ;NO. Next state

8846 C3 04 88 JMP AGAIN ;Repeat the whole

;sequence

8849 06 0F DELAY: MVI B,0FH

884B 11 FF 1F DLY5: LXI D,1FFFH

884E 00 DLY10: NOP

884F 00 NOP

8850 1B DCX D

8851 7A MOV A,D

8852 B3 ORA E


9

8853 C2 4E 88 JNZ DLY10 ;Inner loop

8856 05 DCR B

8857 C2 4B 88 JNZ DLY5 ;Outer loop

885A C9 RET

885B 88 83 F2 PORTS: DB 88H,83H,0F2H ;State 1

885E 88 87 F2 DB 88H,87H,0F2H ;AMBER ON

8861 38 88 F4 DB 38H,88H,0F4H ;State 2

8864 78 88 F4 DB 78H,88H,0F4H ;AMBER ON

8867 83 88 F8 DB 83H,88H,0F8H ;State 3

886A 87 88 F8 DB 87H,88H,0F8H ;AMBER ON

886D 88 38 F1 DB 88H,38H,0F1H ;State 4

8870 88 78 F1 DB 88H,78H,0F1H ;AMBER ON

8873 88 88 00 DB 88H,88H,00H ;State 5

8876 88 88 00 DB 88H,88H,00H ;DUMMY



; after a fixed delay.

8800 ORG 8800H

8800 3E 80 MVI A,80H ;Configure 8255 to mode0


8804 21 32 88 AGAIN: LXI H,PORTS ;Table of port values


8808 D3 40 OUT 40H ;Port A value

880A 23 INX H

880B 7E MOV A,M

880C D3 41 OUT 41H ;Port B value

880E 23 INX H

880F 7E MOV A,M


8812 23 INX H

8813 CD 1F 88 CALL DELAY ;Some delay

8816 7D MOV A,L

8817 FE 50 CPI LOW TEND ;End of port values?

8819 C2 07 88 JNZ NEXTST ;No. Next state

881C C3 04 88 JMPL AGAIN ;Repeat the whole

;sequence

881F 11 06 00 DELAY: LXI D,0006H

8822 11 FF FF DLY5: LXI B,0FFFFH

8825 0B DLY10: DCX B

8826 79 MOV A,C

8827 B0 ORA B

8828 C2 25 88 JNZ DLY10 ;Inner loop

882B 1B DCX D


10

882C 7B MOV A,E

882D B2 ORA D

882E C2 22 88 JNZ DLY5 ;Outer loop

8831 C9 RET

8832 10 81 7A PORTS: DB 10H,81H,7AH ;State 1

8835 44 44 F0 DB 44H,44H,0F0H ;All AMBERs ON

8838 08 11 E5 DB 08H,11H,0E5H ;State 2

883B 44 44 F0 DB 44H,44H,0F0H ;All AMBERs ON

883E 81 10 DA DB 81H,10H,0DAH ;State 3


8844 11 08 B5 DB 11H,08H,0B5H ;State 4


884A 88 88 00 DB 88H,88H,00H ;State 5

884D 44 44 F0 DB 44H,44H,0F0H ;All AMBERs ON

8850 00 TEND: DB 00H ;DUMMY

4.2 DEMONSTRATION PROGRAM FOR ESA 85-2 TRAINER








8000 ORG 8000H



8004 0E 05 AGAIN: MVI C,05H ;5 states in a sequence

8006 21 5A 80 LXI H,PORTS ;Table of port values


800A D3 40 OUT 40H ;Port A value

800C 23 INX H

800D 7E MOV A,M

800E D3 41 OUT 41H ;Port B value

8010 23 INX H

8011 7E MOV A,M


8014 23 INX H

8015 DB 70 IN 70H ;Read DIP Switch

8017 E6 08 ANI 08H ;Find mode of operation

8019 C2 2A 80 JNZ WKBD ;Keyboard mode


11

801C C5 PUSH B ;Save counter

801D CD 97 0B WSER: CALL 0B97H ;Get character in serial

;mode

8020 79 MOV A,C

8021 FE 2C CPI 2CH ;Is it a ","

8023 C2 1D 80 JNZ WSER ;No, try again

8026 C1 POP B

8027 C3 32 80 JMP WOVER ;Next state

802A CD 14 05 WKBD: CALL 0514H ;Read key (monitor

;routine)

802D FE 1C CPI 1CH ;Compare with code for

;"NEXT" key

802F C2 2A 80 JNZ WKBD ;Wait until "NEXT" key

;is pressed

8032 7E WOVER: MOV A,M ;Sequence for turning ON

;AMBER LED

8033 D3 40 OUT 40H

8035 23 INX H

8036 7E MOV A,M

8037 D3 41 OUT 41H

8039 23 INX H

803A 7E MOV A,M

803B D3 42 OUT 42H

803D 23 INX H

803E CD 48 80 CALL DELAY ;AMBER ON period

8041 0D DCR C ;All states over?

8042 C2 09 80 JNZ NEXTST ;NO. Next state

8045 C3 04 80 JMP AGAIN ;Repeat the whole

;sequence

8048 06 7F DELAY: MVI B,7FH

804A 11 FF 01 DLY5: LXI D,01FFH

804D 00 DLY10: NOP

804E 00 NOP

804F 1B DCX D

8050 7A MOV A,D

8051 B3 ORA E

8052 C2 4D 80 JNZ DLY10 ;Inner loop

8055 05 DCR B

8056 C2 4A 80 JNZ DLY5 ;Outer loop

8059 C9 RET

805A 88 83 F2 PORTS: DB 88H,83H,0F2H ;State 1

805D 88 87 F2 DB 88H,87H,0F2H ;AMBER ON

8060 38 88 F4 DB 38H,88H,0F4H ;State 2

8063 78 88 F4 DB 78H,88H,0F4H ;AMBER ON

8066 83 88 F8 DB 83H,88H,0F8H ;State 3


12

8069 87 88 F8 DB 87H,88H,0F8H ;AMBER ON

806C 88 38 F1 DB 88H,38H,0F1H ;State 4

806F 88 78 F1 DB 88H,78H,0F1H ;AMBER ON

8072 88 88 00 DB 88H,88H,00H ;State 5

8075 88 88 00 DB 88H,88H,00H ;DUMMY




8000 ORG 8000H



8004 21 32 80 AGAIN: LXI H,PORTS ;Table of port values


8008 D3 40 OUT 40H ;Port A value

800A 23 INX H

800B 7E MOV A,M

800C D3 41 OUT 41H ;Port B value

800E 23 INX H

800F 7E MOV A,M


8012 23 INX H


8016 7D MOV A,L

8017 FE 50 CPI LOW TEND ;End of port values?

8019 C2 07 80 JNZ NEXTST ;No. Next state

801C C3 04 80 JMPL AGAIN ;Repeat the whole

;sequence

801F 11 06 00 DELAY: LXI D,0006H

8022 01 FF FF DLY5: LXI B,01FFFH

8025 0B DLY10: DCX B

8026 79 MOV A,C

8027 B0 ORA B

8028 C2 25 80 JNZ DLY10 ;Inner loop

802B 1B DCX D

802C 7B MOV A,E

802D B2 ORA D

802E C2 22 80 JNZ DLY5 ;Outer loop

8031 C9 RET



8038 08 11 E5 DB 08H,11H,0E5H ;State 2




13


8044 11 08 B5 DB 11H,08H,0B5H ;State 4


804A 80 80 00 DB 88H,88H,00H ;State 5



4.3 DEMONSTRATION PROGRAM FOR ESA 80 TRAINER








8000 ORG 8000H

8000 3E 80 LD A,80H ;Configure 8255 in mode0

8002 D3 43 OUT (43H),A ;All ports as O/P

8004 0E 05 AGAIN: LD C,05H ;5 states in a sequence

8006 21 5C 80 LD HL,PORTS ;Table of port values

8009 7E NEXTST:LD A,(HL)

800A D3 40 OUT (40H),A ;Port A value

800C 23 INC HL

800D 7E LD A,(HL)

800E D3 41 OUT (41H),A ;Port B value

8010 23 INC HL

8011 7E LD A,(HL)

8012 D3 42 OUT (42H),A ;Port C value

8014 23 INC HL

8015 E5 PUSH HL ;Save pointer

8016 C5 PUSH BC ;Save counter

8017 DB 50 IN A,(50H) ;Read DIP Switch

8019 E6 08 AND 08H ;Find mode of operation

801B 20 0C JR NZ,WKBD ;Keyboard mode

801D CD 12 0C WSER: CALL 0C12H ;Get character in serial

;mode

8020 79 LD A,C

8021 FE 2C CP 2CH ;Is it a ","

8023 20 F8 JR NZ,WSER ;No, try again

8025 C1 POP BC

8026 C3 34 80 JP WOVER ;Next state


14

8029 DD 21 A5 07 WKBD:LD IX,07A5H ;Blank the display

802D CD FE 05 CALL 05FEH ;Scan keyboard

8030 FE 10 CP 10H ;Compare with code for

;"NEXT" key

8032 20 F5 JR NZ,WKBD ;Wait until "NEXT" key

;is pressed

8034 C1 WOVER: POP BC ;Restore count

8035 E1 POP HL ;Restore pointer

8036 7E LD A,(HL) ;Sequence for turning ON

;AMBER LED

8037 D3 40 OUT (40H),A

8039 23 INC HL

803A 7E LD A,(HL)

803B D3 41 OUT (41H),A

803D 23 INC HL

803E 7E LD A,(HL)

803F D3 42 OUT (42H),A

8041 23 INC HL

8042 CD 4C 80 CALL DELAY ;AMBER ON period

8045 0D DEC C ;All states over?

8046 C2 09 80 JP NZ,NEXTST ;NO. Next state

8049 C3 04 80 JP AGAIN ;Repeat the whole

;sequence

804C 06 1F DELAY: LD B,1FH

804E 11 FF 03 DLY5: LD DE,03FFH

8051 00 DLY10: NOP

8052 00 NOP

8053 1B DEC DE

8054 7A LD A,D

8055 B3 OR E

8056 20 F9 JR NZ,DLY10 ;Inner loop

8057 05 DEC B

8059 20 F3 JR NZ,DLY5 ;Outer loop

805B C9 RET

805C 88 83 F2 PORTS: DB 88H,83H,0F2H ;State 1


8062 38 88 F4 DB 38H,88H,0F4H ;State 2

8065 78 88 F4 DB 78H,88H,0F4H ;AMBER ON

8068 83 88 F8 DB 83H,88H,0F8H ;State 3

806B 87 88 F8 DB 87H,88H,0F8H ;AMBER ON

806E 88 38 F1 DB 88H,38H,0F1H ;State 4

8071 88 78 F1 DB 88H,78H,0F1H ;AMBER ON

8074 88 88 00 DB 88H,88H,00H ;State 5

8077 88 88 00 DB 88H,88H,00H ;DUMMY


15




8000 ORG 8000H

8000 3E 80 LD A,80H ;Configure 8255 in mode0

8002 D3 43 OUT (43H),A ;All ports as O/P

8004 21 30 80 AGAIN: LD HL,PORTS ;Table of port values

8007 7E NEXTST:LD A,(HL)

8008 D3 40 OUT (40H),A ;Port A value

800A 23 INC HL

800B 7E LD A,(HL)

800C D3 41 OUT (41H),A ;Port B value

800E 23 INC HL

800F 7E LD A,(HL)

8010 D3 42 OUT (42H),A ;Port C value

8012 23 INC HL


8016 7D LD A,L

8017 FE 4E CP 4EH ;End of port values?

8019 C2 07 80 JP NZ,NEXTST ;No. Next state

801C C3 04 80 JP AGAIN ;Repeat the whole

;sequence

801F 11 10 00 DELAY: LD DE,0010H

8022 01 FF 1F DLY5: LD BC,1FFFH

8025 0B DLY10: DEC BC

8026 79 LD A,C

8027 B0 OR B

8028 20 FB JR NZ,DLY10 ;Inner loop

802A 1B DEC DE

802B 7B LD A,E

802C B2 OR D

802D 20 F3 JR NZ,DLY5 ;Outer loop

802F C9 RET



8036 08 11 E5 DB 08H,11H,0E5H ;State 2


803C 81 10 DA DB 81H,10H,0DAH ;State 3

803F 44 44 F0 DB 44H,44H,0F0H ;All AMBERs ON

8042 11 08 B5 DB 11H,08H,0B5H ;State 4


8048 80 80 00 DB 88H,88H,00H ;State 5


804E 00 TEND: DB 00H ;DUMMY


16



; Assume the interface is connected over P4 of the trainer






1000 ORG 1000H

1000 A9 80 LDA #80H ;Configure 8255 in mode0

1002 8D 43 A0 STA 0A043H ;All ports as O/P

1005 A2 05 AGAIN: LDX #05H ;5 states in a sequence

1007 A0 00 LDY #0 ;Index for table of port

;values

1009 B9 72 10 NEXTST:LDA PORTS,Y

100C 8D 40 A0 STA 0A040H ;Port A value

100F C8 INY

1010 B9 72 10 LDA PORTS,Y

1013 8D 41 A0 STA 0A041H ;Port B value

1016 C8 INY


101A 8D 42 A0 STA 0A042H ;Port C value

101D C8 INY

101E 8A TXA

101F 48 PHA ;Save counter

1020 98 TYA

1021 48 PHA ;Save counter

1022 AD 80 A4 LDA 0A480H ;Read DIP Switch

1025 10 09 BPL WSER ;Serial mode

1027 20 EA FE WKBD: JSR 0FEEAH ;Read a key

102A C9 1C CMP #1CH ;Compare with code for

;"NEXT" key

102C D0 F9 BNE WKBD ;Wait until "NEXT" key

;is pressed

102E F0 07 BEQ WOVER

1030 20 81 EA WSER: JSR 0EA81H ;Read a character

1033 C9 2C CMP #2CH ;Is it "," key?

1035 D0 F9 BNE WSER ;No. Try again

1037 68 WOVER: PLA

1038 A8 TAY ;Restore index


17

1039 68 PLA

103A AA TAX ;Restore count

103B B9 72 10 LDA PORTS,Y ;Sequence for turning

;ON AMBER

103E 8D 40 A0 STA 0A040H

1041 C8 INY


1045 8D 41 A0 STA 0A041H

1048 C8 INY


104C 8D 42 A0 STA 0A042H

104F C8 INY

1050 20 59 10 JSR DELAY ;AMBER ON period

1053 CA DEX ;All states over?

1054 D0 B3 BNE NEXTST ;No. Next state

1056 4C 05 10 JMP AGAIN ;Repeat the whole

;sequence

1059 A9 FF DELAY:LDA #0FFH

105B 8D 70 10 STA FLAG1

105E A9 00 DLY5: LDA #00H

1060 8D 71 10 STA FLAG2

1063 EA DLY10: NOP

1064 EA NOP

1065 CE 71 10 DEC FLAG2

1068 D0 F9 BNE DLY10 ;Inner loop

106A CE 70 10 DEC FLAG1

106D D0 EF BNE DLY5 ;Outer loop

106F 60 RTS

1070 FLAG1:DS 1

1071 FLAG2:DS 1

1072 88 83 F2 PORTS: DB 88H,83H,0F2H ;State 1

1075 88 87 F2 DB 88H,87H,0F2H ;AMBER ON

1078 38 88 F4 DB 38H,88H,0F4H ;State 2

107B 78 88 F4 DB 78H,88H,0F4H ;AMBER ON

107E 83 88 F8 DB 83H,88H,0F8H ;State 3

1081 87 88 F8 DB 87H,88H,0F8H ;AMBER ON

1084 88 38 F1 DB 88H,38H,0F1H ;State 4

1087 88 78 F1 DB 88H,78H,0F1H ;AMBER ON

108A 88 88 00 DB 88H,88H,00H ;State 5

108D 88 88 00 DB 88H,88H,00H ;DUMMY





18

1000 ORG 1000H

1000 A9 80 LDA #80H ;Configure 8255 in mode0

1002 8D 43 A0 STA 0A043H ;All ports as O/P

1005 A0 00 LDY #0 ;Index for table of port

;values

1007 B9 42 10 NEXTST:LDA PORTS,Y

100A 8D 40 A0 STA 0A040H ;Port A value

100D C8 INY

100E B9 42 10 LDA PORTS,Y

1011 8D 41 A0 STA 0A041H ;Port B value

1014 C8 INY


1018 8D 42 A0 STA 0A042H ;Port C value

101B C8 INY

101C 20 27 10 JSR DELAY ;Some delay

101F 98 TYA

1020 C9 1E CMP #TLENG ;End of port values?

1022 D0 E3 BNE NEXTST ;No. Next state

1024 4C 05 10 JMP AGAIN ;Repeat the whole

;sequence

1027 A9 FF DELAY:LDA #0FFH

1029 8D 40 10 STA FLAG1

102C A9 00 DLY5: LDA #00H

102E 8D 41 10 STA FLAG2

1031 EA DLY10: NOP

1032 EA NOP

1033 CE 41 10 DEC FLAG2

1036 D0 F9 BNE DLY10 ;Inner loop

1038 EA NOP

1039 EA NOP

103A CE 40 10 DEC FLAG1

103D D0 ED BNE DLY5 ;Outer loop

103F 60 RTS

1040 FLAG1:DS 1

1041 FLAG2:DS 1



1048 08 11 E5 DB 08H,11H,0E5H ;State 2




1054 11 08 B5 DB 11H,08H,0B5H ;State 4


105A 80 80 00 DB 88H,88H,00H ;State 5



19


001E TLENG: EQU TEND-PORTS

4.5 DEMONSTRATION PROGRAM FOR ESA 68K TRAINER


; Assume the interface is connected over P3 of the trainer




040600 ORG 40600H

040600 41 F9 00 LEA $80300H,A0 ;Configure 8255

08 03 00 ;for mode 0

040606 11 7C 00 MOVE.B #$80,6(A0);All ports as O/P

80 00 06

04060C 34 3C 00 AGAIN:MOVE.W #$04,D2 ;5 states in a sequence

04

040610 43 F9 00 LEA $PORTS,A1 ;Table of port values

04 06 6A

040616 12 19 NEXTST:MOVE.B (A1)+,D1

040618 11 41 00 MOVE.B D1,0(A0) ;Port A value

00

04061C 12 19 MOVE.B (A1)+,D1

04061E 11 41 00 MOVE.B D1,2(A0) ;Port B value

02

040622 12 19 NEXTST:MOVE.B (A1)+D1

040624 11 41 00 MOVE.B D1,4(A0) ;Port C value

04

040628 48 E7 20 MOVEM.L D2/A1,-(A7);Save counter

40 ;and pointer

04062C 4E B8 04 WAIT: JSR $04E0 ;Get character

E0 ;(monitor routine)

040630 0C 01 00 CMP.B #",",D1 ;Is it a comma

2C

040634 66 F6 BNE WAIT ;Wait until "NEXT"

;key is pressed

040636 4C DF 02 MOVEM.L (A7)+,D2/A1;Resore count

04 ;and pointer

04063A 12 19 MOVE.B (A1)+,D1 ;Sequence for turning

;ON AMBER

04063C 11 41 00 MOVE.B D1,0(A0)

00


20

040640 12 19 MOVE.B (A1)+,D1

040642 11 41 00 MOVE.B D1,2(A0)

02

040646 12 19 MOVE.B (A1)+,D1

040648 11 41 00 MOVE.B D1,4(A0)

04

04064C 61 00 00 BSR.B DELAY ;AMBER ON period

08

040650 51 CA FF DBF D2,NEXTST;Loop for 5 states

D0

040654 60 B6 BRA AGAIN ;Repeat the whole

;sequence

040656 3A 3C FF DELAY:MOVE.W #0FFFFH,D5

FF

04065A 4E 71 DLY10:NOP

04065C 4E 71 NOP

04065E 4E 71 NOP

040660 4E 71 NOP

040662 4E 71 NOP

040664 51 CD FF DBF D5,DLY10

F4

040668 4E 75 RTS

04066A 88 83 F2 PORTS: DB 88H,83H,0F2H ;State 1

04066D 88 87 F2 DB 88H,87H,0F2H ;AMBER ON

040670 38 88 F4 DB 38H,88H,0F4H ;State 2

040673 78 88 F4 DB 78H,88H,0F4H ;AMBER ON

040676 83 88 F8 DB 83H,88H,0F8H ;State 3

040679 87 88 F8 DB 87H,88H,0F8H ;AMBER ON

04067C 88 38 F1 DB 88H,38H,0F1H ;State 4


040682 88 88 00 DB 88H,88H,00H ;State 5

040685 88 88 00 DB 88H,88H,00H ;DUMMY




040600 ORG 40600H

040600 41 F9 00 LEA $80300,A0 ;Configure 8255

08 03 00 ;for mode 0

040606 11 7C 00 MOVE.B #$80,6(A0);All ports as O/P

80 00 06

04060C 43 F9 00 AGAIN: LEA $PORTS,A1 ;Table of port values

04 06 46

040612 12 19 NEXTST:MOVE.B (A1)+D1


21

040614 10 81 MOVE.B D1,(A0) ;Port A value

040616 12 19 MOVE.B (A1)+D1

040618 11 41 00 MOVE.B D1,2(A0) ;Port B value

02

04061C 12 19 NEXTST:MOVE.B (A1)+D1

04061E 11 41 00 MOVE.B D1,4(A0) ;Port C value

04

040622 61 0A BSR $DELAY ;Some delay

040624 B3 FC 00 CMPA.L #$TEND,A1 ;End of port values

04 06 64

04062A 66 E6 BNE.S NEXTST ;No. Next state

04062C 60 DE BRA.S AGAIN ;Repeat the whole

;sequence

04062E 3A 3C FF DELAY:MOVE.W #$0FFFF,D5

FF

040632 4E 71 DLY10:NOP

040634 4E 71 NOP

040636 4E 71 NOP

040638 4E 71 NOP

04063A 4E 71 NOP

04063C 4E 71 NOP

04063E 4E 71 NOP

040640 51 CD FF DBF D5,DLY10

F0

040644 4E 75 RTS

040646 10 81 7A PORTS:DB 10H,81H,7AH ;State 1


04064C 08 11 E5 DB 08H,11H,0E5H ;State 2

04064F 44 44 F0 DB 44H,44H,0F0H ;All AMBERs ON

040652 81 10 DA DB 81H,10H,0DAH ;State 3


040658 11 08 B5 DB 11H,08H,0B5H ;State 4


04065E 88 88 00 DB 88H,88H,00H ;State 5



4.6 DEMONSTRATION PROGRAM FOR ESA 86/88-2 TRAINER







22



2000 ORG 2000H

2000 B0 80 START: MOVB AL,#80H ;Configure 8255 in mode0

2002 BA E6 FF MOVB DX,#0FFE6H

2005 EE OUTB DX ;All ports as O/P

2006 B9 05 00 AGAIN: MOVW CX,#05H ;5 states in a sequence

2009 BE 6F 20 MOVW SI,PORTS ;Table of port values

200C 8A 04 NEXTST:MOVB AL,[SI]

200E BA E0 FF MOVW DX,#0FFE0H

2011 EE OUTB DX ;Port A value

2012 46 INCW SI

2013 83 C2 02 ADDW DX,#2

2016 8A 04 MOVB AL,[SI]

2018 EE OUTB DX ;Port B value

2019 46 INCW SI

201A 83 C2 02 ADDW DX,#2

201D 8A 04 MOVB AL,[SI]

201F EE OUTB DX ;Port C value

2020 46 INCW SI

2021 56 PUSH SI ;Save counter

2022 51 PUSH CX ;Save pointer

2023 BA ED FF MOVW DX,#0FFEDH;Read DIP Switch

2026 EC INB DX ;TO find mode of

2027 A8 80 TESTB AL,#80H ;operation

2029 74 0C JZ WKBD ;Keyboard mode

202B 90 WSER: NOP ;Serial mode

202C 9A 70 1B 00 FE CALLS 01B70,0FE00;Call monitor routine

;To get a character

2031 3C 2C CMPB AL,"," ;Is it a comma?

2033 75 F6 JNZ WSER ;No, try again

2035 74 0A JZ WOVER ;Yes proceed further

2037 90 WKBD: NOP ;Keyboard mode

2038 9A 70 1B 00 FE CALLS 01BC,0FF00;Call monitor routine

;To get a keycode

203D 3C 11 CMPB AL,#11H ;Call monitor routine

203F 75 F6 JNZ WKBD ;Wait until "NEXT" key

;is pressed

2041 59 WOVER: POP CX ;Restore count

2042 5E POP SI ;Restore pointer

2043 8A 04 MOVB AL,[SI] ;Sequence for turning ON

;AMBER

2045 BA E0 FF MOVW DX,#0FFE0H


23

2048 EE OUTB DX ;Port A value

2049 46 INCW SI

204A 83 C2 02 ADDW DX,#2

204D 8A 04 MOVB AL,[SI]

204F EE OUTB DX ;Port B value

2050 46 INCW SI

2051 83 C2 02 ADDW DX,#2

2054 8A 04 MOVB AL,[SI]

2056 EE OUTB DX ;Port C value

2057 46 INCW SI

2058 E8 05 00 CALL DELAY ;AMBER ON period

205B E2 AF LOOP NEXTST ;Loop to next state

205D E9 A6 FF JMP AGAIN ;Repeat the whole

;sequence

2060 B3 0F DELAY: MOVB BL,#0FH

2062 51 PUSH CX

2063 B9 FF 1F DLY5: MOVW CX,#1FFFH

2066 90 DLY10: NOP

2067 E2 FD LOOP DLY10

2069 FE CB DECB BL

206B 75 F6 JNZ DLY5 ;Outer loop

206D 59 POP CX

206E C3 RET

206F 88 83 F2 PORTS: DB 88H,83H,0F2H ;State 1

2072 88 87 F2 DB 88H,87H,0F2H ;AMBER ON

2075 38 88 F4 DB 38H,88H,0F4H ;State 2

2078 78 88 F4 DB 78H,88H,0F4H ;AMBER ON

207B 83 88 F8 DB 83H,88H,0F8H ;State 3

207E 87 88 F8 DB 87H,88H,0F8H ;AMBER ON

2081 88 38 F1 DB 88H,38H,0F1H ;State 4

2084 88 78 F1 DB 88H,78H,0F1H ;AMBER ON

2087 88 88 00 DB 88H,88H,00H ;State 5

208A 88 88 00 DB 88H,88H,00H ;DUMMY




2000 ORG 2000H

2000 B0 80 START: MOVB AL,#80 ;Configure 8255 in mode0

2002 BA E6 FF MOVW DX,#0FFE6H

2005 EE OUTB DX ;All ports as O/P

2006 BE 6F 20 AGAIN: MOVW SI,PORTS ;Table of port values

2009 8A 04 NEXTST:MOVB AL,[SI]

200B BA E0 FF MOVW DX,#0FFE0H


24

200E EE OUTB DX ;Port A value

200F 46 INCW SI

2010 83 C2 02 ADDW DX,#2

2013 8A 04 MOVB AL,[SI]

2015 EE OUTB DX ;Port B value

2016 46 INCW SI

2017 83 C2 02 ADDW DX,#2

201A 8A 04 MOVB AL,[SI]

201C EE OUTB DX ;Port C value

201D 46 INCW SI

201E E8 09 00 CALL DELAY ;Some delay

2021 81 FE 55 20 CMPB SI,TEND ;End of port values?

2025 75 E2 JNZ NEXTST ;No. Next state

2027 E9 DC FF JMP AGAIN ;Repeat the whole

;sequence

202A B9 20 00 DELAY: MOVW CX,#020H

202D 51 DLY5 : PUSH CX

202E B9 FF 03 MOVW CX,03FFH

2031 90 DLY10: NOP


2034 59 POP CX

2035 E2 F6 LOOP DLY5 ;Outer loop

2037 C3 RET

2038 10 81 7A PORTS:DB 10H,81H,7AH ;State 1


203E 08 11 E5 DB 08H,11H,0E5H ;State 2


2044 81 10 DA DB 81H,10H,0DAH ;State 3


204A 11 08 B5 DB 11H,08H,0B5H ;State 4


2050 88 88 00 DB 88H,88H,00H ;State 5







; The traffic system moves from one state to next state after a

; fixed delay

; Program memory from 8000H to 804FH


25

ORG 8000H

PORT_A EQU E800H

PORT_B EQU E801H

PORT_C EQU E802H

CWR EQU E803H


8000 90 E8 03 MOV DPTR,#0E803H ;Initialise 8255

8003 74 80 MOV A,#80H ;for MODE 0.

8005 F0 MOVX @DPTR,A ;All Ports as

;O/P Ports.

8006 90 00 00 AGAIN: MOV DPTR,#PORTS ;Table of Port

8009 E0 NEXTST: MOVX A,@DPTR ;values.

800A C0 82 PUSH DPL

800C C0 83 PUSH DPH

800E 90 E8 00 MOV DPTR,#E800H ;Port A value.

8011 F0 MOVX @DPTR,A

8012 D0 83 POP DPH

8014 D0 82 POP DPL

8016 A3 INC DPTR

8017 E0 MOVX A,@DPTR

8018 C0 82 PUSH DPL

801A C0 83 PUSH DPH

801C 90 E8 01 MOV DPTR,#E801H ;Port B value.

801F F0 MOVX @DPTR,A

8020 D0 83 POP DPH

8022 D0 82 POP DPL

8024 A3 INC DPTR


8026 C0 82 PUSH DPL

8028 C0 83 PUSH DPH

802A 90 E8 02 MOV DPTR,#E802H ;Port C value.

802D F0 MOVX @DPTR,A

802E D0 83 POP DPH

8030 D0 82 POP DPL

8032 A3 INC DPTR

8033 12 80 3D LCALL DELAY ;Provide delay.

8036 E5 82 MOV A,DPL

8038 B4 1E CE CJNE A,#01H,NEXTST

803B 80 C9 SJMP AGAIN

803D 7A 06 DELAY: MOV R2,#06H ;Delay routine.

803F 7C FF LOOP3: MOV R4,#0FFH

8041 7B FF LOOP2: MOV R3,#0FFH


26

8043 1B LOOP1: DEC R3

8044 BB 00 FC CJNE R3,#00,LOOP1

8047 1C DEC R4

8048 BC 00 F6 CJNE R4,#00,LOOP2

804B 1A DEC R2

804C BA 00 F0 CJNE R2,#00,LOOP3

804F 22 RET

ENTER THE DATA MENTIONED BELOW FROM 0000 TO 001E IN DATA MEMORY.


0003 44 44 F0 DB 44H,44H,0F0H ;All Ambers ON.

0006 08 11 E5 DB 08H,11H,0E5H ;State 2



000F 44 44 F0 DB 44H,44H,0F0H ;All Ambers ON.

0012 11 08 B5 DB 11H,08H,0B5H ;State 4


0018 88 88 00 DB 88H,88H,00H ;State 5

001B 44 44 F0 DB 44H,44H,0F0H ;All Ambers ON.

001E 00 DB 00H ;DUMMY.








REG1 EQU 52H

REG2 EQU 54H

REG3 EQU 56H

REG4 EQU 58H

REG5 EQU 60H

PORT_A EQU 200H

PORT_B EQU 202H

PORT_C EQU 204H

CMD_PORT EQU 206H

GET_CH EQU 22E6H



27

8000 B1 80 52 LDB REG1,#80H ;Initialise

8003 C7 01 06 02 STB REG1,CMD_PORT ;8255 for

8007 52 ;all O/P ports

8008 B1 05 56 AGAIN: LDB REG3,#05H ;5 States in a

;sequence.

800B A1 7A 80 58 LD REG4,#PORTS ;Table of port

;values.

800F B2 58 52 NEXTST: LDB REG1,[REG4]

8012 C7 01 00 02 STB REG1,PORT_A ;Port A value.

8016 52

8017 07 58 INC REG4

8019 B2 58 52 LDB REG1,[REG4]

801C C7 01 02 02 STB REG1,PORT_B ;Port B value.

8020 52

8021 07 58 INC REG4

8023 B2 58 52 LDB REG1,[REG4]

8026 C7 01 04 02 STB REG1,PORT_C ;Port C value.

802A 52

802B 07 58 INC REG4

802D 20 00 SJMP WSER

802F C8 54 WSER: PUSH REG2 ;Save counter.

8031 EF B2 A2 WSER1: LCALL GET_CH ;Get character.

8034 99 2C 20 CMPB 20H,#',' ;Is it a comma?

8037 D7 F8 JNE WSER1 ;No try again

8039 CC 54 POP REG2

803B B2 58 52 WOVER: LDB REG1,[REG4] ;Sequence for

803E C7 01 00 02 STB REG1,PORT_A ;turning on

8042 52 ;Amber.

8043 07 58 INC REG4

8045 B2 58 52 LDB REG1,[REG4]

8048 C7 01 00 02 STB REG1,PORT_A

804C 52

804D 07 58 INC REG4

804F B2 58 52 LDB REG1,[REG4]

8052 C7 01 00 02 STB REG1,PORT_A

8056 52

8057 07 58 INC REG4

8059 EF 06 00 LCALL DELAY ;Amber on period.

805C 15 56 DECB REG3 ;All states over.

805E D7 AF JNE NEXTST ;No, Next state.

8060 27 A6 SJMP AGAIN ;Repeat the

;whole sequence.

8062 B1 0F 54 DELAY: LDB REG2,#0FH ;Delay Routine.

8065 A1 FF 1F 60 DEL5: LD REG5,#1FFFH


28

8069 FD DEL10: NOP

806A FD NOP

806B 05 60 DEC REG5

806D B0 60 52 LDB REG1,REG5

8070 90 60 52 ORB REG1,REG5

8073 D7 F4 JNE DEL10

8075 15 54 DECB REG2

8077 D7 EC JNE DEL5

8079 F0 RET

807A 88 83 F2 PORTS: DCB 88H,83H,0F2H ;State 1

807D 88 87 F2 DCB 88H,87H,0F2H ;All Ambers ON.

8080 38 88 F4 DCB 38H,88H,0F4H ;State 2

8083 78 88 F4 DCB 78H,88H,0F4H ;All Ambers ON.

8086 83 88 F8 DCB 83H,88H,0F8H ;State 3

8089 87 88 F8 DCB 87H,88H,0F8H ;All Ambers ON.

808C 88 38 F1 DCB 88H,38H,0F1H ;State 4

808F 88 78 F1 DCB 88H,78H,0F1H ;All Ambers ON.

8092 88 88 00 DCB 88H,88H,00H ;State 5

8095 88 88 00 DCB 88H,88H,00H ;Dummy.




8000 B1 80 52 LDB REG1,#80H ;Initialise

8003 C7 01 06 02 STB REG1,CMD_PORT ;8255 for

8007 52 ;all O/P ports.

8008 A1 52 80 58 AGAIN: LD REG4,#PORTS

800C B2 58 52 NEXTST: LDB REG1,[REG4]

800F C7 01 00 02 STB REG1,PORT_A ;Port A value.

8013 52

8014 07 58 INC REG4

8016 B2 58 52 LDB REG1,[REG4]

8019 C7 01 02 02 STB REG1,PORT_B ;Port B value.

801D 52

801E 07 58 INC REG4

8020 B2 58 52 LDB REG1,[REG4]

8023 C7 01 04 02 STB REG1,PORT_C ;Port C value.

8027 52

8028 07 58 INC REG4

802A EF 0C 00 LCALL DELAY ;Some delay.

802D A1 70 80 54 LD REG2,#TEND ;End of port

;values.

8031 88 54 58 CMP REG4,REG2

8034 D7 D6 JNE NEXTST ;No, Next


29

;state.

8036 E7 CF FF LJMP AGAIN ;Repeat the

;entire

;sequence.

8039 A1 0A 00 62 DELAY: LD REG6,#0AH

803D A1 FF FF 60 DEL50: LD REG5,#0FFFFH ;Delay

8041 05 60 DEL10: DEC REG5 ;routine.

8043 89 00 00 60 CMP REG5,#00H

8047 D7 F8 JNE DEL10

8049 05 62 DEC REG6

804B 89 00 00 62 CMP REG6,#00H

804F D7 EC JNE DEL50

8051 F0 RET

8052 10 81 7A PORTS: DCB 10h,81h,07Ah ; State 1.

8055 44 44 F0 DCB 44H,44H,0F0H ; All Ambers ON.

8058 08 11 E5 DCB 08H,11H,0E5H ; State 2.

805B 44 44 F0 DCB 44H,44H,0F0H ; All Ambers ON.

805E 81 10 DA DCB 81H,10H,0DAH ; State 3.


8064 11 08 B5 DCB 11H,08H,0B5H ; State 4.


806A 88 88 00 DCB 88H,88H,00H ; State 5.

806D 44 44 F0 DCB 44H,44H,0F0H ; Dummy.

8070 00 TEND: DCB 00H

4.9 DEMONSTRATION PROGRAM FOR ESA 68K-2 TRAINER







ORG 400400H

PORTA EQU 800011H

PORTB EQU 800013H

PORTC EQU 800019H

PA_CT EQU 80000DH

PA_DI EQU 800005H

PB_CT EQU 80000FH

PB_DI EQU 800007H

PC_DI EQU 800009H


30

ADDRESS OPCODE LABLE MNEMONICS COMMENTS

400400 13FC 0000 START:MOVE.B #0,PA_CT ;Initialise

0080 000D ;68230 in mode 0

400408 13FC 00FF MOVE.B #$FF,PA_DI ;All ports as

0080 0005 ;Output ports

400410 13FC 0000 MOVE.B #0,PB_CT

0080 000F

400418 13FC 00FF MOVE.B #$FF,PB_DI

0080 0007

400420 13FC 00FF MOVE.B #$FF,PC_DI

0080 0009

400428 343C 0004 AGAIN:MOVE.W #$04,D2 ;5 States in a

;sequence

40042C 43F9 0040 LEA PORTS,A1 ;Table of port

049A ;values

400432 1219 NEXTST:MOVE.B (A1)+,D1

400434 13C1 0080 MOVE.B D1,PORTA ;Port A value

0011

40043A 1219 MOVE.B (A1)+,D1

40043C 13C1 0080 MOVE.B D1,PORTB ;Port B value

0013

400442 1219 MOVE.B (A1)+,D1

400444 13C1 0080 MOVE.B D1,PORTC ;Port C value

0019

40044A 48E7 2040 MOVEM.L D2/A1,-(A7) ;Save counter

;and Pointer

40044E 4EB9 0040 WAIT: JSR GETKEY

0494

400454 0C00 002C CMP.B #",",D0 ;Is it a comma

400458 66F4 BNE.S WAIT

40045A 4CDF 0204 MOVEM.L (A7)+,D2/A1 ;Restore count

;and Pointer

40045E 1219 MOVE.B (A1)+,D1 ;Sequence for

400460 13C1 0080 MOVE.B D1,PORTA ;Turning on

0011 ;AMBER

400466 1219 MOVE.B (A1)+,D1

400468 13C1 0080 MOVE.B D1,PORTB

0013

40046E 1219 MOVE.B (A1)+,D1

400470 13C1 0080 MOVE.B D1,PORTC

0019

400476 6100 0008 BSR DELAY ;AMBER ON PERIOD

40047A 51CA FFB6 DBF D2,NEXTST ;Loop for 5

;states


31

40047E 60A8 BRA.S AGAIN ;Repeat the

;whole Sequence

400480 3A3C FFFF DELAY:MOVE.W #$FFFF,D5

400484 4E71 DLY10:NOP

400486 4E71 NOP

400488 4E71 NOP

40048A 4E71 NOP

40048C 4E71 NOP

40048E 51CD FFF4 DBF D5,DLY10

400492 4E75 RTS ;Returns in D0

400494 4E4B GETKEY: TRAP #11

400496 00 0E DC.W $000EH

400498 4E75 RTS

40049A 88 83 F2 PORTS: DB 88H,83H,F2H ;State1

40049D 88 87 F2 DB 88H,87H,F2H ;Amber ON

4004A0 38 88 F4 DB 38H,88H,F4H ;State2

4004A3 78 88 F4 DB 78H,88H,F4H ;Amber ON

4004A6 83 88 F4 DB 83H,88H,F4H ;State3

4004A9 87 88 F8 DB 87H,88H,F8H ;Amber ON

4004AC 88 38 F1 DB 88H,38H,F1H ;State4

4004AF 88 78 F1 DB 88H,78H,F1H ;Amber ON

4004B2 88 88 00 DB 88H,88H,00H ;State 5

4004B5 88 88 00 DB 88H,88H,00H ;Dummy.




400400 13FC 0000 START:MOVE.B #0,PA_CT ;Initialise 68230

0080 000D

400408 13FC 00FF MOVE.B #$FF,PA_DI ;in mode 0

0080 0005 ;All Ports as o/p

400410 13FC 0000 MOVE.B #0,PB_CT ;Ports.

0080 000F

400418 13FC 00FF MOVE.B #$FF,PB_DI

0080 0007

400420 13FC 00FF MOVE.B #$FF,PC_DI

0080 0009

400428 43F9 0040 AGAIN:LEA PORTS,A1 ;Table of Port

0472 ;values

40042E 1219 NEXTST:MOVE.B (A1)+,D1

400430 13C1 0080 MOVE.B D1,PORTA ;Port A value

0011

400436 1219 MOVE.B (A1)+,D1

400438 13C1 0080 MOVE.B D1,PORTB ;Port B value


32

0013

40043E 1219 MOVE.B (A1)+,D1

400440 13C1 0080 MOVE.B D1,PORTC ;Port C value

0019

400446 610A BSR.S DELAY

400448 B3FC 0040 CMPA.L #TEND,A1 ;End of PORT

0490 ;values?

40044E 66DE BNE.S NEXTST ;No, Next state.

400450 60D6 BRA.S AGAIN ;Repeat the

;whole sequence.

400452 3A3C FFFF DELAY:MOVE.W #$FFFFH,D5 ;Delay Routine.

400456 4E71 DLY10:NOP

400458 4E71 NOP

40045A 4E71 NOP

40045C 4E71 NOP

40045E 4E71 NOP

400460 4E71 NOP

400462 4E71 NOP

400464 4E71 NOP

400466 4E71 NOP

400468 4E71 NOP

40046A 4E71 NOP

40046C 51CD FFE8 DBF D5,DLY10

400470 4E75 RTS

400472 10 81 7A PORTS:DB 10H,81H,7AH ;State1

400475 44 44 F0 DB 44H,44H,F0H ;Ambers ON

400478 08 11 E5 DB 08H,11H,E5H ;State2

40047B 44 44 F0 DB 44H,44H,F0H ;Amber ON

40047E 81 10 DA DB 81H,10H,DAH ;State3

400481 44 44 F0 DB 44H,44H,F0H ;Amber ON

400484 11 08 B5 DB 11H,08H,B5H ;State4

400487 44 44 F0 DB 44H,44H,F0H ;Amber ON

40048A 88 88 00 DB 88H,88H,00H ;State 5

40048D 44 44 F0 DB 44H,44H,F0H ;Amber ON

400490 00 TEND:DB 00H ;Dummy.


;Assume the interface is connected to J10 of trainer.

;The trainer ESA-51 can be in KEYBOARD MODE or in SERIAL MODE.

;The Traffic System moves from one state to next state after

;a fixed time delay.

PORT_A EQU E800H


33

PORT_B EQU E801H

PORT_C EQU E802H

CWR EQU E803H


8000 ORG 8000H

8000 90 E8 03 MOV DPTR,#CWR ;Initialise 8255

8003 74 80 MOV A,#80H ;for MODE 0.


;O/P Ports.

8006 90 00 00 AGAIN: MOV DPTR,#0000H ;Table of Port

8009 E0 NEXTST:MOVX A,@DPTR ;values.

800A C0 82 PUSH DPL

800C C0 83 PUSH DPH

800E 90 E8 00 MOV DPTR,#PORT_A ;Port A value.


8012 D0 83 POP DPH

8014 D0 82 POP DPL

8016 A3 INC DPTR


8018 C0 82 PUSH DPL

801A C0 83 PUSH DPH

801C 90 E8 01 MOV DPTR,#PORT_B ;Port B value.


8020 D0 83 POP DPH

8022 D0 82 POP DPL

8024 A3 INC DPTR


8026 C0 82 PUSH DPL

8028 C0 83 PUSH DPH

802A 90 E8 02 MOV DPTR,#PORT_C ;Port C value.


802E D0 83 POP DPH

8030 D0 82 POP DPL

8032 A3 INC DPTR

8033 12 80 3D CALL DELAY ;Provide delay.


8038 B4 01 CE CJNE A,#1EH,NEXTST








34

8047 1C DEC R4

8048 BC 00 F6 CJNE R4,#00,LOOP2

804B 1A DEC R2


804F 22 RET

ENTER THE BELOW GIVEN DATA FROM 0000 TO 001E AT DATA MEMORY



0006 08 11 E5 DB 08H,11H,0E5H ;State 2




0012 11 08 B5 DB 11H,08H,0B5H ;State 4


0018 88 88 00 DB 88H,88H,00H ;State 5



4.11 DEMONSTRATION PROGRAM FOR ESA 86/88-3 TRAINER





; fixed delay

; The program starts at memory location 0:2000H

; Please refer ESA 86/88-3 user's manual for mnemonic syntax

; suitable to trainer

Code Segment :0000H


2000 B0 80 START: MOVB AL,80H ;Initialise 8255

;in Mode 0

2002 BA E6 FF MOVW DX,0FFE6H

2005 EE OUTB DX,AL ;All ports as o/p

2006 BE 38 20 AGAIN: MOVW SI,2038H ;Load able of port

;values

2009 8A 04 NEXTST: MOVB AL,[SI]

200B BA E0 FF MOVW DX,0FFE0H

200E EE OUTB DX,AL ;O/p Value at PortA

200F 46 INCW SI


35

2010 80 C2 02 ADDB DL,2

2013 8A 04 MOVB AL,[SI]

2015 EE OUTB DL,AL ;O/p Value at PortB

2016 46 INCW SI

2017 80 C2 02 ADDB DL,2


201C EE OUTB DX,AL ;O/p Value at PortC

201D 46 INCW SI

201E E8 08 00 CALL DELAY ;Calling Delay

;routine

2021 81 FE 56 20 CMP SI,2056H ;Check for end of

;data

2025 75 E2 JNZ NEXTST

2027 EB DD JMP AGAIN

2029 B9 FF 00 DELAY: MOVW CX,0FFH ;Delay routine

202C 51 DLY5: PUSH CX

202D B9 FF 03 MOVW CX,03FFH

2030 90 DLY10: NOP


2033 59 POP CX

2034 E2 F6 LOOP DLY5

2036 C3 RET

2038 ORG 2038H

2038 10 81 7A DB 10H,81H,7AH ;State 1

203B 44 44 F0 DB 44H,44H,0F0H ;All ambers ON

203E 08 11 E5 DB 08H,11H,0E5H ;State 2

2041 44 44 F0 DB 44H,44H,0F0H ;All ambers ON

2044 81 10 DA DB 81H,10H,0DAH ;State 3


204A 11 08 B5 DB 11H,08H,0B5H ;State 4

204D 44 44 F0 DB 44H,44H,0F0H ;All ambers ON

2050 88 88 00 DB 88H,88H,00H ;State 5


2056 00 DB 00H ;Dummy

4.12 DEMONSTRATION PROGRAM FOR ESA 51E TRAINER

;Assume the interface is connected to J5 of the trainer.

;The trainer can be in KEYBOARD MODE or in SERIAL MODE.

;The Traffic System moves from one state to next state after

;a fixed time delay.

PORT_A EQU E800H

PORT_B EQU E801H


36

PORT_C EQU E802H

CWR EQU E803H


8000 ORG 8000H

8000 90 E8 03 MOV DPTR,#CWR ;Initialise

8003 74 80 MOV A,#80H ;8255for MODE 0.


;O/P Ports.

8006 90 00 00 AGAIN: MOV DPTR,#0000H ;Table of Port

8009 E0 NEXTST: MOVX A,@DPTR ;values.

800A C0 82 PUSH DPL

800C C0 83 PUSH DPH

800E 90 E8 00 MOV DPTR,#PORT_A ;Port A value.


8012 D0 83 POP DPH

8014 D0 82 POP DPL

8016 A3 INC DPTR


8018 C0 82 PUSH DPL

801A C0 83 PUSH DPH

801C 90 E8 01 MOV DPTR,#PORT_B ;Port B value.


8020 D0 83 POP DPH

8022 D0 82 POP DPL

8024 A3 INC DPTR


8026 C0 82 PUSH DPL

8028 C0 83 PUSH DPH

802A 90 E8 02 MOV DPTR,#PORT_C ;Port C value.


802E D0 83 POP DPH

8030 D0 82 POP DPL

8032 A3 INC DPTR

8033 12 80 3D CALL DELAY ;Provide delay.


8038 B4 1E CE CJNE A,#1EH,NEXTST







8047 1C DEC R4


37

8048 BC 00 F6 CJNE R4,#00,LOOP2

804B 1A DEC R2


804F 22 RET

ENTER THE BELOW GIVEN DATA FROM 0000 TO 001E AT DATA MEMORY



0006 08 11 E5 DB 08H,11H,0E5H ;State 2




0012 11 08 B5 DB 11H,08H,0B5H ;State 4


0018 88 88 00 DB 88H,88H,00H ;State 5



4.13 DEMONSTRATION PROGRAM FOR ESA 86/88E TRAINER





; fixed delay

; The program starts at memory location 0:2000H

; Please refer ESA 86/88E user's manual for mnemonic syntax

; suitable to trainer

Code Segment :0000H


2000 B0 80 START: MOVB AL,80H ;Initialise 8255

;in Mode 0

2002 BA E6 FF MOVW DX,0FFE6H

2005 EE OUTB DX,AL ;All ports as o/p

2006 BE 38 20 AGAIN: MOVW SI,2038H ;Load able of port

;values

2009 8A 04 NEXTST: MOVB AL,[SI]

200B BA E0 FF MOVW DX,0FFE0H

200E EE OUTB DX,AL ;O/p Value at PortA

200F 46 INCW SI

2010 80 C2 02 ADDB DL,2


38

2013 8A 04 MOVB AL,[SI]

2015 EE OUTB DL,AL ;O/p Value at PortB

2016 46 INCW SI

2017 80 C2 02 ADDB DL,2


201C EE OUTB DX,AL ;O/p Value at PortC

201D 46 INCW SI

201E E8 08 00 CALL DELAY ;Calling Delay

;routine

2021 81 FE 56 20 CMP SI,2056H ;Check for end of

;data

2025 75 E2 JNZ NEXTST

2027 EB DD JMP AGAIN

2029 B9 FF 00 DELAY: MOVW CX,0FFH ;Delay routine

202C 51 DLY5: PUSH CX

202D B9 FF 03 MOVW CX,03FFH

2030 90 DLY10: NOP


2033 59 POP CX

2034 E2 F6 LOOP DLY5

2036 C3 RET

2038 ORG 2038H

2038 10 81 7A DB 10H,81H,7AH ;State 1

203B 44 44 F0 DB 44H,44H,0F0H ;All ambers ON

203E 08 11 E5 DB 08H,11H,0E5H ;State 2


2044 81 10 DA DB 81H,10H,0DAH ;State 3


204A 11 08 B5 DB 11H,08H,0B5H ;State 4

204D 44 44 F0 DB 44H,44H,0F0H ;All ambers ON

2050 88 88 00 DB 88H,88H,00H ;State 5


2056 00 DB 00H ;Dummy

intel's mcs-51 family of microcontrollers and its ... · simulates the control and operation...

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