MBSD

LAB # 8MDA – 8086 SYSTEM CONFIGURATION

(TRAINER)1- CPU: Using Intel 8086 , using 14.7456 MHz.2- ROM: It has program to control users key input , Lcd display users program 64kb , it

has data communication program . Range of ROM address Is F0000H – FFFFFH .3- STATIC RANDOM ACCESS MEMORY : Input’s users program and data . Address of

memory is 0000H - FFFFH , totally 64 KB.4- DISPLAY : Text LCD module , 16 character into 2 lines.5- KEYBOARD: IT is used to input machine language . There are 16 hexadecimal keys and

8 Functions keys.6- SPEAKER : sound test.7- RS-232C : Serial communication with IBM compatable PC.8- DOT MATRIX LED : To understand and test the dot matrix structure and principle of

display. It is interface 8255A (PPI)9- A/D CONVERTER: AD c0804 to convert analog to digital.10- D/A Converter : DA c0800 (8bit D/A converter) to convert digital to analog signal and

to control the level meter.11- STEPPING MOTOR INTERFACE : Stepping motor driver circuit is design .12- POWER : AC 110-220v , DC +5v 3A, 12 v 1A , -12v 0.5A.

OPERATIONAL INTRODUCTION:

FUNCTION OF KEYS : MDA 8086 has high performance 64 KB monitor program . It is design for easy function. After power is on the monitor program begins to work . In addition to all the keys function the monitor has a memory checking routine.

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RES system reset.

AD Set memory address.

DA Update segment and offset and input data to memory.

: Offset.

+ Segment and offset +1 increament , register display increament.

_ Segment and offset -1increament register display decreament.

STP Execute users program , a single step.

GO Goto users program or execute monitor functions.

MON immediately break users program and non maskable interrupt.

REG Register display.

IC’s CONFIGURATION

ICL232DescriptionThe ICL232 is a dual RS-232 transmitter/receiver interface circuit that meets all ElA RS-232C and V.28 specifications. It requires a single +5V power supply, and features twoonboard charge pump voltage converters which generate +10V and -10V supplies from the 5V supply.

DAC0800The DAC0800 series are monolithic 8-bit high-speed current-output digital-to-analog converters (DAC) featuring typical settling times of 100 ns. When used as a multiplyingDAC, monotonic performance over a 40 to 1 reference current range is possible. The DAC0800 series also features high compliance complementary current outputs to allow differential output voltages of 20 Vp-p with simple resistor loads. The reference-to-full-scale current matching of better than ±1 LSB eliminates the need for full-scale trims in most applications while the nonlinearities of better than ±0.1% over temperature minimizes system error accumulations.

8259A

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Y 8086, 8088 CompatibleY MCS-80, MCS-85 CompatibleY Eight-Level Priority ControllerY Expandable to 64 LevelsY Programmable Interrupt ModesY Individual Request Mask CapabilityY Single a5V Supply (No Clocks)Y Available in 28-Pin DIP and 28-LeadPLCC Package(See Packaging Spec., Order Ý231369)Y Available in EXPRESSÐStandard Temperature RangeÐExtended Temperature Range

DM74121General DescriptionThe DM74121 is a monostable multivibrator featuring both positive and negative edge triggering with complementary outputs. An internal 2ktiming resistor is provided fordesign convenience minimizing component count and layout problems. this device can be used with a single external capacitor. Inputs (A) are active-LOW trigger transition inputs and input (B) is and active-HIGH transition Schmitttrigger input that allows jitter-free triggering from inputs with transition rates as slow as 1 volt/second. A high immunity to VCC noise of typically 1.5V is also provided by internal circuitry at the input stage.

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