Specifications

CPU

Motorola MC68000 microprocessor with 16-bit data bus and 24-bit address bus

System Clock

10MHz generated by a CMOS oscillator

RAM

16K bytes fitted as standard, expandable to 256K bytes RAM

 

User RAM Address Range: 400400h-403FFFh (400400h-43FFFFh when

 

expanded)

ROM

Two 27256 32K EPROMs containing the 64K bytes monitor program,

 

expandable to 128K bytes with use of two 27512 64K EPROMs

 

Monitor EPROM Address Range: 000000h-00FFFFh (000000h-01FFFFh when

 

expanded)

Memory Expansion

Sockets for additional RAM up to 256K bytes

 

On-board RAM Expansion Address Range: 440000h-47FFFFh

I/O Ports

MC68230 Peripheral Interface/Timer (PI/T) chip providing 16 digital I/O lines

 

and a 24-bit wide counter with 5-bit prescaler, with full interrupt support

 

Input/Output Address Range: 800001h-800035h

 

MC68681 Dual Universal Asynchronous Receiver/Transmitter (DUART)

 

providing two full specification RS232 serial ports with full interrupt support

 

Input/Output Address Range: A00001h-A0001Fh

 

Three interrupt sources (link selectable)

 

Bus Expansion Connector offering access to all 64 lines of the 68000 CPU

Connectors

Two male 9-way D-type RS232 serial ports, one for connecting with display

 

terminal or host PC, the other for connecting to a printer or for general use

 

40 way IDC header providing access to the MC68230 Peripheral Interface/Timer

 

(PI/T) digital input/output and counter/timer lines

 

64 way male DIN41612 bus expansion connector offering access to all

 

processor signals of the MC68000 CPU

Interrupts

Eight external user interrupt vectors, auto vectored interrupts, and eleven trap

 

instructions available to the user

Switch Faults

Ten fault switches offer six open circuit and four short to ground faults

Power Supply

The board operates from a single 9V power supply and has a current

 

consumption of 700mA

 

A 110/120V 50/60Hz or 220/240V 50/60Hz power adapter is included (please

 

specify which is required when ordering)

Physical

Dimensions: 1575mm wide, 2230mm deep, 160mm high without case

Characteristics

Weight: 1.41lb including case

 

 

Applications Board

The applications board has been designed to aid the teaching of microprocessor interfacing from simple switch and lamp input/output through to more complex closed-loop and open- loop control systems.

The new board layout enables students to easily understand each experiment section as it is worked upon. The wide array of features incorporated into the board include digital switches, traffic light color LED displays, temperature, light, and optical position/speed sensors, a heater, a DC motor, an LED bargraph, and a potentiometer. A screw terminal is also provided for external analog input.