Trainer is a powerful and cost-effective complete single-board microprocessor based on the Motorola 68000 CPU supported by the popular peripheral chips from Motorola. The powerful system monitor includes one-line assembler for mnemonic entry, disassembler and Centronics printer interface driver in addition (0 the user friendly set of debug monitor commands. ABORT facility permits graceful recovery, preserving the complete user context, from "STUCK" programs. It is supported by a wide verity of interface modules making it an extremely useful educational aid. Careful bus arbitration design permits the access of all on-board resources by an off-board master making it easy to expand It into a multi-master configuration. Thus It is a valuable aid for teaching, software and hardware development in academic institutions, research institutions and R&D labs.

Main Features

 Operates on single +5V power supply with a PC compatible system through its RS 232 C serial communication interface.

 Powerful system monitor permits entry of programs, debugging through breakpoint, trace and instruction step facilities.

 Hardware debugging through Read loop, Write loop and Test memory commands.

 Built-in one line assembler and disassembler.

 Centronics printer Driver included in the monitor Program.

 Interfacing with PC compatibles, with file upload / download capability.

 Provision for multi-master design expansion.

 ABORT facility to recover gracefully from "STUCK" programs.

 Flexible and powerful interrupt system.

 Supported by a variety of interface modules

Accessories (optional)

* Interface Modules: Keyboard, Elevator, Display, ADC using DAC, Dual Slope ADC, Dual DAC,

   Logic Controller, Traffic Lights, RTC, 18 Column Numeric Printer etc.,

* 68020 / 68881 upgrade: A plug in replacement for 68000 processor which allows all the advanced features of the 68020 and 68681.

* Centronics printer interface cable.

* SO core ribbon cable connector set

CPU : 68000 at 8 MHZ

MEMORY

ROM : Four JEDEC compatible 28 pin sockels provide. 128K Bytes using 4 X 27256 256K Bytes using

            4 X 27512 System firmware is supplied in 2 X 27256. Rest is for user expansion.

RAM : Four 28-pin sockets Logive 128K bytes using 4 X 62256. 64K Bytes

           supplied using 2 X 62256. Reset is for user expansion

Peripherals:

68681 Dual UART : To provide two RS-232C Ports 8 output lines, counter timer etc. 68230 Parallel Interface

                               I Timer: To provide 16 I/O lines, 8 user defined lines and 24 bit counter timer with 5 bit (+32) prescaller.

Interrupts:

On-board interrupt priority encoder, On-board autovector generation.

Complete flexibility in selecting on-board / off-board interrupt sources.

Level 7 interrupt is dedicated for implementing ABORT function.

Bus

Bus Buffered TTL Compatible bus signals brought out to Spectra Strip type 50 pin ribbon cable connector for

easy expansion. Bus arbitration signals available on connector.

Provision for accesing on-board resources by off board Master.

Interface Signals

Parallel 110 : 24 lines of TTL compatible signals brought out to Spectra Strip type 26 pin ribbon cable connectors.

Serial 110: Two RS 232 C ports with standard MODEM control signals through on-baord 9 pin D-type connectors

Scope of Supply

1. 68K-2 Trainer

2. XT68K2 Driver Software

3 RS-232C cables set.

4. User's Manual