This section will explain how to upgrade and get your Cambridge Z88 working for you as soon as possible. Once you have tried out the simple examples in the next few pages you should have a feel for what the Cambridge Z88 can do for you, before proceeding to the later sections at your leisure. There are some important sections that need to be understood, they are: Switch On/Off, Using an External Flash Card, Changing keyboard layout, Set the Default Device and Using an External Flash Card.

Z88 Survival Kit

There are four items that the acute Z88 user should have handy for emergencies.

Storage Device

Storage Device
Open	Flash or EPROMs should be used to backup important data.
Set of batteries
Open	These always seem to fail when you don't want them to.
Mains Adapter
Open	Handy to use when you are near a mains socket.
Paper Clip
Open	Small but effective to reset the Z88 if it becomes unresponsive.

New Z88

For those of you who have never seen what a new Z88 in the box looks like, here it is.

The Box

The Box
Open Boxed Z88 omputer
Box and Sleeve
Open Z88 box and sleeve	The sleeve exposes the plasticized cardboard box
Carrying Handle
Open Z88 Box handle	with a carrying handle that invites it to be used with the Z88.
User Guide
Open Z88 Verion 3 User Guide in box	is stored in a separate section. There were 4 versions. The copy shown here is version 4, which is what this User Guide is based on.
Protection
Open Showing large sheet to protect Z88 keyboard	There is an A3 sheet of paper wrapped around the front edge of the Z88. This is to protect the rubber keys from being damaged. There are the Z88's "Start Up" instructions on the opposite side.
WARNING
Open Using Box warning	Should you decide to use the box with the Z88, make sure you do not insert the Z88 as shown. The cardboard box can catch the rubber keys and shear them off quite easily. The UK keyboard mat is no longer available. Either use the protection sheet, or do not use the box for general use. The carrying case is a lot softer and is a better option to use.

Fitting batteries

Check Batteries Although we like to think that when we buy a new set of batteries they are at the working voltage, this is not always the case. Prudent Z88 users check them before using them.

Open

To run the Cambridge Z88 you will need the following batteries: Four alkaline cells, Size AA, type MN1500 or LR6. Other types of the same size can be used in an emergency, but we recommend the use of the leak-resistant alkaline type as these will keep your Cambridge Z88 working for longer without needing replacement. With these batteries an unexpanded Cambridge Z88 will give about 20 hours of active computing, and the data will be preserved in the machine while it is switched off for up to a year. For heavy indoor use the mains power unit is recommended. Note that the procedure described here is not the same as the one for replacing existing batteries. In this case refer to Appendix A.

Inserting the batteries

The four batteries are housed in a row in the battery compartment, under a flap on the rear of the Cambridge Z88 case.

Open

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To insert batteries for the first time, use the following procedure:

1. Remove the cover from the battery compartment on the back of the Cambridge Z88 case, and insert one battery at each end of the compartment. 
   Make sure the batteries are fitted the correct way round, as indicated by the diagram in the battery compartment.

2. Insert the remaining two batteries to make an 'A' shape above the case. Make sure that all four batteries are facing in the same direction, with the correct polarity. 
   Then push down on the two batteries so that they click into place.

3. Replace the battery compartment cover firmly.

Open

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Switch On/Off

There is no On/Off switch. The Z88 is always on, but to conserve power the display can be turned off and the Z88 is put into dozy mode.

Open

Open	Leave Keyboard Clear of items. When the Z88 is OFF i.e. in sleep mode, the Z88 wakes up if a key is pressed to check if they are the two Shift Keys. If an item inadvertently, presses a key, this constant checking shortens the life of the batteries.

Open

For those of you that are used to working with large monitors this screen may seem small but because of the ingenious and economical way the system uses the available space, you will find that the size will not inhibit its use.

Immediately below the display is a list of commands together with the control key and code needed to action them. These are useful reminders for beginners but once the comprehensive internal MENU(s) are used, they show and allow selection all the commands that may be used at that point.

The standard Cambridge Z88 has all the operating system and software pre-installed, named as OZ - ready to be run when the machine has been initially reset, leaving the external slots free for more RAM or to install applications or memory cards for files. All internal ROM versions originally released by Cambridge Computer in 1990 (final release was V4.0 UK) are a lower version number than the one available now. When the Z88 is given a HARD RESET, the first thing the operating system checks is whether there is a program is available to run from Slot 1. It is that technique that is used when using an external card.

Flash Card example

When Rakewell supplies Flash Cards, there are additional applications and extra files loaded in the file area.

Impatient users may elect to skip the detailed description on how to use these cards in this manual initially as the example illustrates some useful techniques which the first-time user may find very useful.

Follow this link for a step by step instructions on how to use this, but please come back and read the full description later.

• Changing the Internal ROM

• Using the External Flash Card.

Using an External Flash Card

• 1M Flash card

• 512K / 512K Flash/RAM card