Sega G-80 manual

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A good user manual

The rules should oblige the seller to give the purchaser an operating instrucion of Sega G-80, along with an item. The lack of an instruction or false information given to customer shall constitute grounds to apply for a complaint because of nonconformity of goods with the contract. In accordance with the law, a customer can receive an instruction in non-paper form; lately graphic and electronic forms of the manuals, as well as instructional videos have been majorly used. A necessary precondition for this is the unmistakable, legible character of an instruction.

What is an instruction?

The term originates from the Latin word „instructio”, which means organizing. Therefore, in an instruction of Sega G-80 one could find a process description. An instruction's purpose is to teach, to ease the start-up and an item's use or performance of certain activities. An instruction is a compilation of information about an item/a service, it is a clue.

Unfortunately, only a few customers devote their time to read an instruction of Sega G-80. A good user manual introduces us to a number of additional functionalities of the purchased item, and also helps us to avoid the formation of most of the defects.

What should a perfect user manual contain?

First and foremost, an user manual of Sega G-80 should contain:
- informations concerning technical data of Sega G-80
- name of the manufacturer and a year of construction of the Sega G-80 item
- rules of operation, control and maintenance of the Sega G-80 item
- safety signs and mark certificates which confirm compatibility with appropriate standards

Why don't we read the manuals?

Usually it results from the lack of time and certainty about functionalities of purchased items. Unfortunately, networking and start-up of Sega G-80 alone are not enough. An instruction contains a number of clues concerning respective functionalities, safety rules, maintenance methods (what means should be used), eventual defects of Sega G-80, and methods of problem resolution. Eventually, when one still can't find the answer to his problems, he will be directed to the Sega service. Lately animated manuals and instructional videos are quite popular among customers. These kinds of user manuals are effective; they assure that a customer will familiarize himself with the whole material, and won't skip complicated, technical information of Sega G-80.

Why one should read the manuals?

It is mostly in the manuals where we will find the details concerning construction and possibility of the Sega G-80 item, and its use of respective accessory, as well as information concerning all the functions and facilities.

After a successful purchase of an item one should find a moment and get to know with every part of an instruction. Currently the manuals are carefully prearranged and translated, so they could be fully understood by its users. The manuals will serve as an informational aid.

Table of contents for the manual

  • Page 1

    Sega G-80 Multigame, Version 1.0 Copyright © 1998, Clay Cowgill Sega G-80 Multigame Instruction Manual Version 1.0 Copyright © 1998, Clay Cowgill clayc@diamondmm.com[...]

  • Page 2

    Sega G-80 Multigame, Version 1.0 Copyright © 1998, Clay Cowgill Notice Regarding this Upgrade Warning! Although this upgrade has been tested and the techniques used will not directly cause harm to your Sega G-80 System, if you do something wrong, you can very seriously damage the game electronics! To perform this upgrade you should: • Be familia[...]

  • Page 3

    Sega G-80 Multigame, Version 1.0 Copyright © 1998, Clay Cowgill The Sega G-80 Multigame (the “kit”) consists of two assembled printed circuit boards and a replacement PROM. When installed on the CPU board of Sega G-80 Vector Game (Star Trek, Zektor, Space Fury, Eliminator, or Tac/Scan) the kit eliminates the need for the EPROM board and allows[...]

  • Page 4

    Sega G-80 Multigame, Version 1.0 Copyright © 1998, Clay Cowgill Press the “release” levers on the edges of the CPU board to eject the card. (This can be very difficult if the card hasn’t been removed in 15 years…) The CPU card looks like this: Locate the EPROM card (it should be the only card without any cables attached to the end). Press [...]

  • Page 5

    Sega G-80 Multigame, Version 1.0 Copyright © 1998, Clay Cowgill Upgrading the CPU card: We’ll be removing four chips from the CPU card. They are: • U15 – a 16 pin PROM • U21 – a 40 pin security chip • U25 – a 24 pin 2K EPROM • U22 – a 40 pin Z-80 processor (usually U22 is not labeled on the PCB) Using a small-blade standard screw[...]

  • Page 6

    Sega G-80 Multigame, Version 1.0 Copyright © 1998, Clay Cowgill Place the replacement PROM in socket U15 so that the notch is pointed towards the end of the CPU card that the red “test” switch is on. The notch should be facing the same direction as the 7400 at U14 and the 7408 at U13. Press it firmly into the socket. Make sure all the pins lin[...]

  • Page 7

    Sega G-80 Multigame, Version 1.0 Copyright © 1998, Clay Cowgill Try it out: Assuming you now have a game on the screen, coin-up and play around for a minute. The Star Trek control panel is used like so: Game Spinner “Warp” “Photon” “Thrust” “Fire” Star Trek rotate warp photon thrust fire Eliminator - rotate left rotate right thrust[...]

  • Page 8

    Sega G-80 Multigame, Version 1.0 Copyright © 1998, Clay Cowgill Space Fury Space Fury, with no control changes. You can use this with a Space Fury control panel to play Space Fury. Self Test The self test runs much like a “standard” self test on the G-80. To skip tests, hold down both Player 1 and Player 2 start buttons for several seconds and[...]

  • Page 9

    Sega G-80 Multigame, Version 1.0 Copyright © 1998, Clay Cowgill Technical information: This info is for any of you technical-types that want to make your own speech- switchers, sound switchers, or whatever. You’ll notice that the Daughtercard has an expansion header on it. This gives you access to two 8-bit output latches. Holding the Daughterca[...]