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Z80_128 JOY

Installation manual For 128+2 A/B, 128+3

1. Z80 JOY description…………………….………………………………. 2

2. Proper installation……………………………………………………….. 3

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Z80 JOY description

Original ZX Spectrum 128+X uses SINCLAIR joystick, incompatible with AMIGA / C64/ ATARI standard.

Also, original the 'left' Sinclair joystick maps the joystick directions and the fire button to the 1 (left), 2 (right), 3

(down), 4 (up) and 5 (fire) keys on the ZX Spectrum keyboard, and can thus be read via port 0xf7fe; Right one

uses 6,7,8,9,0 respectively. For any of the joystick interfaces which map to keys, any game offering the

appropriate form of joystick control can instead be played with the listed keys. Others ZX spectrum do not have

any joystick ports at all...

My interface is based on CPLD but initial idea from VELESOFT. Expansion works in two modes (selectable

joystick activity in port 1). Until ZX spectrum is on, CPLD stores configuration of interface. Device is designed for

all zx spectrums with Z80 CPU in DIP40 package.

MODE1 - orginal ZX 128 mode

o joy1 - Sinclair 1 (keys: 1-left, 2-right, 3-up, 4-down, 5-fire)

o joy2 - Sinclair 2 (keys: 6-left, 7-right, 8-up, 9-down, 0-fire)

MODE2 - new mode ( during power on zx spectrum, press and hold fire button at joy port1 for

approx. 1s)

o joy1 - Kempston compatible

o joy2 - Sinclair 2 (keys: 6-left, 7-right, 8-up, 9-down, 0-fire)

and the most important: YOU CAN USE AMIGA/ATARI/C64 compatible joysticks !

No tricky rewiring needed anymore.

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Proper installation

DISCLAIMER :

Before any soldering inside computer; POWER OFF COMPUTER

Disconnect all devices

Use professional tools without any risk or possible harm to You

If You are not sure what to do – go to PROF ! Do not solder on Your own.

If You haven`t understood below pinouts – also visit PROF technician !

1. Disassemble Your computer, so You get bare motherboard

2. Locate and desolder joystick ports

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3. Insert and fix joystick adapter with screws to motherboard

4. Locate and remove CPU – Zilog Z80. If it is not socketed, desolder and solder back precise socket

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5. Insert Z80 adapter. Insert back CPU

Please, MIND CORRECT CPU ORIENTATION !

6. Connect with ribbon cable z80 adapter with joy adapter. READY �