Z80 Computer


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Z80 Computer




MOTOTECH      P.O. Box 144      Millbury, Ma. 01527      (508) 755-9778      mototech@msn.com

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        INTRODUCTION. Thank you for your inquiry about the Z80 Computer. This computer is very cost effective and provides a terrific platform for projects or products. It would also make a great educational platform for college courses in microcomputer hardware or software. There are presently 2,600 units available, they are boxed new, and manufactured by a major brand name. These computers are just too good to be passed up by intelligent developers and educators. So please, call me, and order as many as you like.

        HISTORY. What in the world am I doing with 2,600 Z80 Computers? Well, my name is James Pellegrini and I am a software engineer. I have been in business since 1984 and I sell various microcomputer products that I design and develop. Some products have been complete new designs, while others have been add-on products (VAR) to existing hardware (like the Z80 Computer). So, several years ago I heard about these computers and I sent away for a sample. When I saw it I thought it was the coolest Z80 ever designed; it was great looking and knew it would be the perfect computer to house some of my designs. I had to have them; and I got them! But, as things go in business, other projects took priority, and I never got to use up all my Z80 Computers. (Shame on me!) This is killing me because I could make 20 times what I am selling them for; if only I had the time to develop my original Z80 idea. AUGH!!

        TECHNICAL INFORMATION. Here is the basic technical information concerning the features and functions of the Z80 Computer. A technical manual and schematic comes with each order. If you have any questions please call.

 
Motherboard
4.0MHz Z80A - running at 3.58MHz
Interrupts - eight levels, maskable, mode 2 vectored
    - 2-Serial, Keyboard, Video, and 4-I/O Card Slots
64K DRAM - has eight HM4864-2
4/8K EPROM - jumper select 4K or 8K
    - comes with 4K EPROM (many routines)
    - no operating system available
    - develop code with an EPROM emulator
    - may be de-selected by software
TNS9918 Video Display - requires data manual
    - Composite Color Video (NTSC Compatible)
    - TV RF Modulator (Ch 3 or Ch 4)
    - 256 x 192 Resolution (Graphics)
    - 40 x 24 Text (TV Screen Readable)
    - 32 Sprite Planes (Animation Patterns)
    - 15 Colors (Plus Transparent)
AY-3-8910 Sound Generator - requires data manual
    - 3 Channels of Sound
    - Sound Effects, Music Synthesis, Alarms
    - TV Set Output (RF Modulator)
    - External Amplifier Output (Line level)
TR1863 High Speed UART - EIA RS-422
    - Full Duplex, 111 Kbits/sec
    - can be modified for standard BAUD rates
    - can be modified for RS-232/RS-485 protocols
    - contact MOTOTECH for modification info
 
Keyboard (17"x7'x2.5')
    - charcoal gray, black keys
    - durable plastic, full stroke keyboard
    - 2-key rollover, auto repeat
    - 2 DB-9 joystick connectors
 
 
 
Computer I/O
4 Card Slots - 30 pin 0.1" SIP male header
    - for user I/O Circuits or Cards
    - contains bi-directional data lines
    - contains 16 decoded addresses each
    - other signals - control, clocks, power
Audio Output - RCA phono connector
    - 10 KOhm output impedance
    - 1.5V p-p signal
Video Output - RCA phono connector
    - 75 Ohm , 1V p-p, +/-6dB negative sync
    - Composite Video (NTSC Compatible)
External RF Input - Type-F connector
    - 75 Ohm CATV cable input
    - input signal for normal TV viewing
TV RF Output - Type-F connector
    - 75 Ohm cable output
    - Video and Audio are RF modulated
    - Ch 3 or Ch 4 modulator switch
    - software switchable output (TV/Computer)
Serial Interface - 5-pin DIN connector
    - RS-422 protocol, Full Duplex, 111 Kbits/sec
    - contact MOTOTECH for modification info
Keyboard Interface - 6-pin DIN connector
    - serial RS-422 protocol
Printer Interface - DB-15 connector
    - 8-bit parallel printer port with handshaking
 
Enclosure (18.5"x11x4")
    - charcoal gray, with plastic front panel
    - contains power supply & motherboard
    - 4-screw, easy open, easy access cover
    - Front: ON/OFF & reset switches
    - Front: 4 LEDs, 3 are programmable
    - Back: 7 connectors & 4 I/O panels
    - all metal case, effective RF shielding
 
Power Supply
    - 40 Watts AC/DC Switching Supply & Fan
    - +5V@2.5A/+12V@2.0A/-12V@0.1A
    - sealed and separate from motherboard
 
   Qty                          Price      +S&H
    1     ...................... $89.00     $11.00
    10   ...................... $80.00      CALL
    25   ...................... $70.00       " "
    50   ...................... $60.00       " "
    200 ...................... $50.00       " "