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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 Daughtercard so that the Z-80 is on the right, the
header pinout is as follows:

D0

D1

D2

D3

D4

D5

D6

D7

+5V

Latch2

Latch2

Latch2

Latch2

Latch2

Latch2

Latch2

Latch2

GND

+5V

Latch1

Latch1

Latch1

Latch1

Latch1

Latch1

Latch1

Latch1

GND

D7 is the most significant bit, D0 is the least significant bit.  As games are selected the following values
are placed on Latch1:

snd_map:                ;                D7654 3210
        .db     h'10    ; star trek       0001 0000 (USB)
        .db     h'21    ; eliminator      0010 0001 (elim/zek)
        .db     h'42    ; space fury      0100 0010 (sf)
        .db     h'13    ; tac/scan        0001 0011 (USB)
        .db     h'24    ; zektor          0010 0100 (elim/zek)
        .db     h'25    ; elim 2p         0010 0101 (elim/zek)
        .db     h'26    ; elim 4p         0010 0110 (elim/zek)
        .db     h'47    ; sf (original)   0100 0111 (sf)
        .db     h'10    ; self test

Содержание G-80

Страница 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...

Страница 2: ...ly follow these instructions you ll do fine and everything will work I ll try to help walk you through any problems you have but if this looks like it s above your confidence level please recruit some...

Страница 3: ...se instructions thoroughly before starting the conversion Getting Started First let s cover what you ll need in some detail The kit is designed to be installed into any Sega G 80 Vector Arcade Game ga...

Страница 4: ...emoved 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 the release levers on the EPROM card and remove it as well...

Страница 5: ...left corner and the notch of the IC should be on the left side of the board like the EPROM above it on the Daughtercard Press the Z 80 down firmly into the socket Make sure you didn t miss any pins or...

Страница 6: ...in the first card slot so that there isn t a neighboring card next to the Daughtercard works well too Re attach the cables and make sure the CPU card is seated properly in the card cage It should be...

Страница 7: ...ton to move the selection arrows to a game to play Press player 2 start to begin that game If you put the arrows on more you can switch to the second menu The available options are currently Option No...

Страница 8: ...itch Radio Shack has many to choose from Pressing the menu button has the same function as pressing the red test button on the CPU card it calls the menu Pressing reset is a hard reset and is useful m...

Страница 9: ...s follows D0 D1 D2 D3 D4 D5 D6 D7 5V Latch2 Latch2 Latch2 Latch2 Latch2 Latch2 Latch2 Latch2 GND 5V Latch1 Latch1 Latch1 Latch1 Latch1 Latch1 Latch1 Latch1 GND D7 is the most significant bit D0 is the...

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