MPT-85LCD Microprocessor board designed around 8085 is ideal for learning 8 bit Microprocessors and peripherals. This makes use of a LCD display to display the mnemonics and codes using 2 Line by 16 Character LCD display is directly connected to the bus like a memory device. This system has a built in LINE-BY-LINE assembler and disassembler. It means that, whenever a line is entered in

assembler mode, it verifies the correctness of mnemonic and assembles into its equivalent opcodes and / or associated data in that line. It is also possible to disassemble the entered programs. The user programs are entered using 101 PC type keyboard.

MPT-85LCD Microprocessor board designed around 8085 is ideal for learning Microprocessors and peripherals. The Microprocessor operates at 6 MHZ using a 6MHZ crystal. Lower bytes of address and data are multiplexed as in 8085 and hence a decoder is necessary separate address and data. Firmware is stored in 16KB EPROM. User data/programs can be stored in 8KB CMOS static RAM of type 6264. This can be upgraded to 32KB RAM using 32kB static memory chip like 62256. It has 48 TTL I/O lines on board. All the I/O lines are brought terminated on 50 pin FRC connectors for conducting necessary interface experiments.

MPT-85LCD has a built in RS232C serial communication system terminated on a 9 pin D-Type connector. This may be used for communicating with remote PC computer. Baud rate of serial communication may be changed from 150 to 9600 baud. It has three-channel timer on board. Transmit and receive clock for USART is obtained from Channel 0 of timer.

The board can operate using the 101/104 PC keyboard supplied along with the trainer kit and 2 Line by 16-character LCD display or from the PC (using the Terminal Emulation Software). Microprocessor’s Address, Data and Control bus pins are brought to the 50 pin FRC connector. MPT-85 LCD is equipped with powerful software monitor. The monitor supports Video terminals RS232C interface, local 101 keyboard and LCD display. The board has 8KB CMOS static RAM that can be upgraded to 32KB.

Specifications:

1. Hardware:

• 8085 Microprocessor operating at 6.144 MHZ.
  
• 16KB powerful software monitor.
  
• Three 16 bit programmable timers.
  
• 48 Programmable I/O lines
  
• One RS232C Serial interface, terminated on a 9-pin D-Type connector
  
• 50 Pin FRC connector for system bus expansion
  
• 50 pin FRC connectors for user interface, using 48 TTL I/O lines.
  
• Six different selectable baud rates from 150 to 9600
  
• 101 PC type keyboard for entering user address/data and for commands
  
• Built in line by line assembler and disassembler
  
• User-friendly software monitor for loading and executing programs with break point facility
  
• Facility to connect to PC
  
• Built-in power supply

2. Software:

• M (Modify memory command)
  
• T (Transfer Memory command)
  
• R (Register display/modify) command
  
• N (LOCAL MODE)
  
• E (EXAMINE / DUMP Memory)
  
• G (GO COMMAND)
  
• A (ASSEMBLE)
  
• D (DISASSEMBLE)
  
• H (HELP)
  
• U (UPLOAD)
  
• L (DOWNLOAD)

3. Terminal Emulation Software:

• SERIAL PORT
  
• SOFTWARE PACKAGE
  
• REMOTE OPERATION OF MPT-85LCD
  
• UPLOADING/ DOWNLOADING TO / FROM PC TO MPT-85LCD
  
• UPLOADING OF DATA FROM KIT TO PC