MM8000K1 Computer Kit Elenco.pdf

7/26/2019 MM8000K1 Computer Kit Elenco.pdf

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MICRO - MASTER

MM-80008085 MICROPROCESSOR - BASIC SYSTEMS COURSE

COMPUTER THEORY - CONSTRUCTION

AND PROGRAMMING

Copyright 2008, 1989 by Elenco Electronics, Inc. All r ights reserved. Revised 2008 REV-D 753808No part of this book shall be reproduced by any means; electronic, photocopying, or otherwise without written permission from the publisher.


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TABLE OF CONTENTS

Introduction

Lesson 1 Numbers

Lesson 2 Memory

Lesson 3 Storing and Reading Data

Lesson 4 Registers and Parts

Lesson 5 The Timer

Lesson 6 ROM

Lesson 7 Functional Description of 8085

Lesson 8 Instructional Set

Lesson 9 MM-8000 System-Monitor Program-Memory Map

Lesson 10 Program 1; Initialization of Monitor

Lesson 11 Program 2; Display/Delay Routines

Lesson 12 Program 3; Scan RoutineLesson 13 Program 4; Function Routines

Lesson 14 Program 5; Addition of Number - Keyboard Entry

Appendix 1 Program Listings

Appendix 2 Detailed Description; Programs 1 thru 5

Appendix 3 Monitor Program Flow Chart

Appendix 4 Schematic Diagram

Appendix 5 PC Board Layout

I


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PARTS LIST

Qty Description Part #RESISTORS

9 1505% 1/4W 131500

1 4705% 1/4W 134700

1 5105% 1/4W 135100

3 6805% 1/4W 136800

1 1k5% 1/4W 141000

8 1.2k5% 1/4W 141200

3 2k5% 1/4W 142000

14 3.9k5% 1/4W 143900

8 6.8k5% 1/4W 146800

14 10k5% 1/4W 151000

5 47k5% 1/4W 154700

2 68k5% 1/4W 156800

CAPACITORS

1 20pF Discap 212080

1 330pF Discap 223317

10 0.1F Discap 251010 1 10F 16V Electrolytic 271054

2 100F 25V Electrolytic 281045

SEMICONDUCTORS

2 A70 Transistor 320070

1 2N3904 Transistor 323904 1 2816A or 9816A IC 332816

1 LM-7805 IC 337805 1 8085 IC 338085

1 8155 IC (see note) 338155

8 LED Diode Red 350002 1 LED Diode Green 350010

2 LED MAN71A / LTS72R / 312AR 350071

Qty Description Part #MISCELLANEOUS

1 74HC00 IC 39HC00

1 74HC04 IC 39HC04

1 74HCT573 IC 39T573 1 Transformer Wall Type 440409

1 PC Board 515030

1 Switch PC Mount DPDT 541023

15 Switch Slide Miniature SPDT 541102 29 Swirch Dimple Dome Triangle 546101

1 Heatsink Clip-on 615005

1 Jack DC Power PC Mount 621080 1 Plastic Case Black 623000

4 Screw #8 self-tapping 642862 4 IC Socket 14-pin 664014

2 IC Socket 16-pin 664016 1 IC Socket 20-pin 664020

1 IC Socket 24-pin 664024

2 IC Socket 40-pin 664040 4 Clip PCBMnt 688000

1 Label Keyboad 728000 1 Label Case 728004

1 Solder Tube Lead-free 9LF99

Note: The 8156 IC has been replaced with an 8155The difference between the two are the active state

of chip enable (CE).The CE on the 8155 is active low(CE) and the 8156 is active high.

TOOLS REQUIRED

1/4 Blade Screwdriver

Phillips Screwdriver(small point size)

Desoldering Pump

Pencil Soldering Iron (25-40 watts) or Soldering Station

Diagonal Cutters

Long Nose Pliers

VOM, VTVM or DMMMeter (optional)

Scotch

Tape(1/2 wide)


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IntroductionThe most important factor in assembling your MM-8000 Micro-Master Kit is good soldering techniques. Usingthe proper soldering iron is of prime importance. A small pencil type soldering iron of 25 - 40 watts is

recommended. The tip of the iron must be kept clean at all times and well tinned.

Safety Procedures Wear eye protection when soldering and during all phases of construction.

Locate soldering iron in an area where you do not have to go around it or reach over it. Do not hold solder in your mouth. Wash your hands thoroughly after handling solder. Be sure that there is adequate ventilation present.

Assemble ComponentsIn all of the following assembly steps, the components must be installed on the top side of the PC board unlessotherwise indicated. The top legend shows where each component goes. The leads pass through thecorresponding holes in the board and are soldered on the foil side.Use only rosin core solder.

DO NOT USE ACID CORE SOLDER!

CONSTRUCTION

Solder Soldering Iron

Foil

Solder

Soldering Iron

Foil

Component Lead

Soldering Iron

Circuit Board

Foil

Rosin

Soldering iron positioned

incorrectly.

Solder

Gap

Component Lead

Solder

Soldering Iron

DragFoil

1. Solder all components from

the copper foil side only.Push the soldering iron tip

against both the lead andthe circuit board foil.

2. Apply a small amount of

solder to the iron tip. This

allows the heat to leave theiron and onto the foil .

Immediately apply solder tothe opposite side of the

connection, away from theiron. Allow the heated

component and the circuit

foil to melt the solder.

1. Insufficient heat - thesolder will not flow onto the

lead as shown.

3. Allow the solder to f low

around the connection.Then, remove the solderand the iron and let the

connection cool. The soldershould have flowed

smoothly and not lump

around the wire lead.

4. Here is what a good solder

connection looks like.

2. Insufficient solder- let thesolder flow over the

connection until it is covered.Use just enough solder to

cover the connection.

3. Excessive solder - couldmake connections that you

did not intend to betweenadjacent foi l areas or

terminals.

4. Solder bridges - occurwhen solder runs between

circuit paths and creates a

short circuit. This is usuallycaused by using too much

solder. To correct this,simply drag your soldering

iron across the solder bridge

as shown.

What Good Soldering Looks LikeA good solder connection should be bright, shiny,

smooth, and uniformly flowed over all surfaces.

Types of Poor Soldering Connections


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(may bemarked C1on the PC

board)


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Clip on heat sink and installat a 45O angle as shown.

* Warning:If the capacitor isconnected with incorrect

polarity, it may heat up and

either leak or cause thecapacitor to explode.

*


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3.9kResistor

R43 R2

2N3904 Transistor

Q3

680Resistor

R69

10kResistor

R14

47kResistor

R8

68kResistor

R10

2kResistor

R12 R9

680Resistor

R6

10kResistor

R45

SPDT Switch

SW4 SW6

3.9kResistor

R13

Jumper

J10

Use a discardedresistor lead.Before installing, cut off

ears

330pF Discap (330)

C15

C11

Figure 3-1


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This switch connected to the 8155 integrated circuit chip enable (CE) pin through transistor Q3. When the

switch is down (toward the edge of the board) the transistor is turned off.The CE pin is held high by resistor

R69. In this state the 8155 is disabled and will ignore input data on all of its other pins. When the switch isup, the transistor turns on and the CE pin is held near ground. In this state, the 8155 is enabled and will

respond to inputs on the other pins. In a later lesson, the reset switch will be used to allow address lineA15 to control the CE input.


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T1T2TWAITT3T4T5T6TRESETTHALTTHOLD

X

XX

X11

1X

0X

X

XX

X0*0*

0*TS

TSTS

X

XX

XXX

XTS

TSTS

X

XX

XTSTS

TSTS

TSTS

1

XX

X11

1TS

TSTS

1

XX

X11

11

11

1

00

000

00

00

Status & Buses Control

S1,S0 IO/M A8-A15 AD0-AD7RD,WR INTA ALEMachine

State

0=Logic 0 1=Logic1 TS=High Impedance X=Unspecified

ALE not generated during 2nd and 3rd machine cycles ofDAD instruction.

* IO/M = 1 duringT4- T6states of RST and INA cycles.

Figure 7-118085A MACHINE STATE CHART

Figure 7-10 8085A CPU STATE TRANSISTION

= CPU STATE Tx ALL CPU STATE TRANSISTIONS OCCUR ONTHE FALLING EDGE OF CLK

= A DECISION (X) THAT DETERMINES WHICH SEVERALALTERNATIVE PATHS TO FOLLOW.

= PERFORM THE ACTION X.

= FLOWLINE THAT INDICATES THE SEQUENCE OF EVENTS.

= FLOWLINE THAT INDICATES THE SEQUENCE OF EVENTSIF CONDITION X IS TRUE.

= NUMBER OF CLOCK CYCLES IN THE CURRENT MACHINE

CYCLE.

= BUS IDLE MACHINE CYCLE = MACHINE CYCLE WHICHDOESNT USE THE SYSTEM BUS.

= VALID INTERRUPT - AN INTERRUPT IS PENDING THAT ISBOTH ENABLED AND UNMASKED (MASKING ONLYAPPLIES FOR RST 5.5, 6.5, AND 7.5 INPUTS).

= INTERNAL HOLD ACKNOWLEDGE FLIP FLOP. NOTE THATTHE 8085A SYSTEM BUSES ARE 3-STATED ONE CLOCKCYCLE AFTER THE HLDA FLIP FLOP IS SET.

TX

X

X

CC

X

BIMC

VALIDINT

HLDA FF

NOTE: SYMBOL DEFINITION


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Table 8-2 - 8085A INSTRUCTION SET SUMMARY BY FUNCTIONAL GROUPING

Instruction Code (1)Mnemonic Description D7 D6 D5 D4 D3 D2 D1 D0

MOVE, LOAD, AND STOREMOVr1 r2 Move register to register 0 1 D D D S S S

MOV M.r Move register to memory 0 1 1 1 0 S S S

MOV r.M Move memory to register 0 1 D D D 1 1 0

MVI r Move immediate to register 0 0 D D D 1 1 0MVI M Move immediate to memory 0 0 1 1 0 1 1 0LXI B Load immediate register Pair B & C 0 0 0 0 0 0 0 1

LXI D Load immediate register Pair D & E 0 0 0 1 0 0 0 1

LXI H Load immediate register Pair H & L 0 0 1 0 0 0 0 1STAX B Store A indirect 0 0 0 0 0 0 1 0

STAX D Store A indirect 0 0 0 1 0 0 1 0LDAX B Load A indirect 0 0 0 0 1 0 1 0

LDAX D Load A indirect 0 0 0 1 1 0 1 0STA Store A direct 0 0 1 1 0 0 1 0

LDA Load A direct 0 0 1 1 1 0 1 0

SHLD Store H & L direct 0 0 1 0 0 0 1 0LHLD Load H & L direct 0 0 1 0 1 0 1 0

XCHG Exchange D & E, H & L registers 1 1 1 0 1 0 1 1


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8085A INSTRUCTION SET SUMMARY (Contd)Instruction Code (1)

Mnemonic Description D7 D6 D5 D4 D3 D2 D1 D0

STACK OPSPUSH B Push register Pair B & C on stack 1 1 0 0 0 1 0 1PUSH D Push register Pair D & E on stack 1 1 0 1 0 1 0 1PUSH H Push register Pair H & L on stack 1 1 1 0 0 1 0 1PUSH PSW Push A and Flags on stack 1 1 1 1 0 1 0 1POP B POP register Pair B & C off stack 1 1 0 0 0 0 0 1POP D POP register Pair D & E off stack 1 1 0 1 0 0 0 0POP H POP register Pair H & L off stack 1 1 1 0 0 0 0 1POP PSW POP A and Flags off stack 1 1 1 1 0 0 0 1XTHL Exchange top of stack, H & L 1 1 1 0 0 0 1 1SPHL H & L to stack pointer 1 1 1 1 1 0 0 1LXI SP Load immediate stack pointer 0 0 1 1 0 0 0 1INX SP Increment stack pointer 0 0 1 1 0 0 1 1DCX SP Decrement stack pointer 0 0 1 1 1 0 1 1

JUMPJMP Jump unconditional 1 1 0 0 0 0 1 1JC Jump on carry 1 1 0 1 1 0 1 0JNC Jump on no carry 1 1 0 1 0 0 1 0JZ Jump on zero 1 1 0 0 1 0 1 0JNZ Jump on no zero 1 1 0 0 0 0 1 0JP Jump on positive 1 1 1 1 0 0 1 0JM Jump on minus 1 1 1 1 1 0 1 0JPE Jump on parity even 1 1 1 0 1 0 1 0JPO Jump on parity odd 1 1 1 0 0 0 1 0PCHL H & L to program counter 1 1 1 0 1 0 0 1

CALLCALL Call unconditional 1 1 0 0 1 1 0 1CC Call on carry 1 1 0 1 1 1 0 0CNC Call on no carry 1 1 0 1 0 1 0 0CZ Call on zero 1 1 0 0 1 1 0 0CNZ Call on no zero 1 1 0 0 0 1 0 0CP Call on positive 1 1 1 1 0 1 0 0CM Call on minus 1 1 1 1 1 1 0 0

CPE Call on parity even 1 1 1 0 1 1 0 0CPO Call on parity odd 1 1 1 0 0 1 0 0

RETURNRET Return 1 1 0 0 1 0 0 1RC Return on carry 1 1 0 1 1 0 0 0RNC Return on no carry 1 1 0 1 0 0 0 0RZ Return on zero 1 1 0 0 1 0 0 0RNZ Return on no zero 1 1 0 0 0 0 0 0RP Return on positive 1 1 1 1 0 0 0 0RM Return on minus 1 1 1 1 1 0 0 0RPE Return on parity even 1 1 1 0 1 0 0 0RPO Return on parity odd 1 1 1 0 0 0 0 0

RESTART

RST Restart 1 1 A A A 1 1 1

INPUT/OUTPUTIN Input 1 1 0 1 1 0 1 1OUT Output 1 1 0 1 0 0 1 1

INCREMENT AND DECREMENTINR r Increment register 0 0 D D D 1 0 0DCR r Decrement register 0 0 D D D 1 0 1INR M Increment memory 0 0 1 1 0 1 0 0DCR M Decrement memory 0 0 1 1 0 1 0 1INX B Increment B & C registers 0 0 0 0 0 0 1 1INX D Increment D & E registers 0 0 0 1 0 0 1 1INX H Increment H & L registers 0 0 1 0 0 0 1 1


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8085A INSTRUCTION SET SUMMARY (Contd)

Instruction Code (1)Mnemonic Description D7 D6 D5 D4 D3 D2 D1 D0

INCREMENT AND DECREMENT (contd)DCX B Decrement B & C 0 0 0 0 1 0 1 1DCX D Decrement D & E 0 0 0 1 1 0 1 1DCX H Decrement H & L 0 0 1 0 1 0 1 1

ADDADD r Add register to A 1 0 0 0 0 S S SADC r Add register to A with carry 1 0 0 0 1 S S SADD M Add memory to A 1 0 0 0 0 1 1 0ADC M Add memory to A with carry 1 0 0 0 1 1 1 0ADI Add immediate to A 1 1 0 0 0 1 1 0ACI Add immediate to A with carry 1 1 0 0 1 1 1 0DAD B Add B & C to H & L 0 0 0 0 1 0 0 1DAD D Add D & E to H & L 0 0 0 1 1 0 0 1DAD H Add H & L to H & L 0 0 1 0 1 0 0 1DAD SP Add stack pointer to H & L 0 0 1 1 1 0 0 1

SUBTRACTSUB r Subtract register from A 1 0 0 1 0 S S SSBB r Subtract register from A with borrow 1 0 0 1 1 S S SSUB M Subtract memory from A 1 0 0 1 0 1 1 0SBB M Subtract memory from A with borrow 1 0 0 1 1 1 1 0SUI Subtract immediate from A 1 1 0 1 0 1 1 0SBI Subtract immediate from A with borrow 1 1 0 1 1 1 1 0

LOGICALANA r And register with A 1 0 1 0 0 S S SXRA r Exclusive OR register with A 1 0 1 0 1 S S SORA r OR register with A 1 0 1 1 0 S S SCMP r Compare register with A 1 0 1 1 1 S S SANA M And memory with A 1 0 1 0 0 1 1 0XRA M Exclusive OR memory with A 1 0 1 0 1 1 1 0ORA M OR memory with A 1 0 1 1 0 1 1 0CMP M Compare memory with A 1 0 1 1 1 1 1 0ANI And immediate with A 1 1 1 0 0 1 1 0XRI Exclusive OR immediate with A 1 1 1 0 1 1 1 0ORI OR immediate with A 1 1 1 1 0 1 1 0CPI Compare immediate with A 1 1 1 1 1 1 1 0

ROTATERLC Rotate A left 0 0 0 0 0 1 1 1RRC Rotate A right 0 0 0 0 1 1 1 1RAL Rotate A left through carry 0 0 0 1 0 1 1 1RAR Rotate A right through carry 0 0 0 1 1 1 1 1

SPECIALSCMA Complement A 0 0 1 0 1 1 1 1STC Set carry 0 0 1 1 0 1 1 1CMC Complement carry 0 0 1 1 1 1 1 1

DAA Decimal adjust A 0 0 1 0 0 1 1 1

CONTROLEI Enable interrupts 1 1 1 1 1 0 1 1DI Disable interrupt 1 1 1 1 0 0 1 1NOP No-operation 0 0 0 0 0 0 0 0HLT Halt 0 1 1 1 0 1 1 0

NEW 8085A INSTRUCTIONSRIM Read Interrupt Mask 0 0 1 0 0 0 0 0SIM Set Interrupt Mask 0 0 1 1 0 0 0 0

NOTES: 1 - DDS or SSS B 000, C 001, D 010, E011, H 100, L 101, Memory 110, A 111

2 - Two possible cycle times. (6/12) indicate instruction cycles dependent on condition flags.


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* Warning:If the capacitor is

connected with incorrectpolarity, it may heat up and

either leak or cause thecapacitor to explode.

*


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APPENDIX 3

Monitor Program

Flow Chart


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APPENDIX 4


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Elenco Electronics, Inc.150 Carpenter Avenue

Wheeling, IL 60090(847) 541-3800

Website: www.elenco.come-mail: [email protected]

Documents

MM8000K1 Computer Kit Elenco.pdf