Initialize the Cambridge Z88
Do this by
|opening the CARD flap|
Using an unbent paper clip, press the reset switch 2 twice, then
|shut the CARD flap|
HARD RESET should appear on the screen.
Must show HARD RESET
If HARD RESET is not displayed after adjusting the contrast (see below), there is no point continuing until this is corrected.
There are two mechanical switches, the card flap and reset switch. If these are faulty, this may be the reason why this is happening.
Removing the batteries and leaving the Z88 alone for 30 minutes can resolve this error.
Adjust the display
- Turn the contrast control as far towards the top of the Cambridge Z88 case as it will go (ie clockwise).
- The screen should display a dark blue rectangle.
- Gradually turn back the control until you can see the Cambridge Z88 screen clearly.
Has the Z88 booted up correctly?
The OZ 4.x index screen should now be displaying.
It is obvious that it is not running from its internal ROM as there should be UK just below the OZ symbol on the top right-hand side. If just the OZ symbol is displayed, then the internal ROM is still in control. Check that the OZ 4.x card is in Slot 1.
Check Latest Version
Whilst in the INDEX use the following command
If this display does either not appear, or has an earlier date than displayed, you have an older version. Please consider upgrading. See Appendix I - Creating / Updating an Application Card. More details may be obtained from the BLOG.
Changing keyboard layout
When the Z88 was sold in different countries, both the internal ROM and the keyboard was changed accordingly. With OZ 4.5 the language-specific parts of those ROM's have been integrated. The default language is UK. To match a different keyboard layout (which may still need to be changed mechanically,) use the additional command in the Panel, to change the ROM component if a different language is required:
- select the Panel S
- move the cursor (with the keys) so that it is over the Uk to the right of Keyboard
- change the language either by using
J to toggle through all the languages or
- select a letter from this table.
The selected keyboard layout (UK) is displayed just below the OZ symbol on the top right-hand side on all the screens as shown below.
The rubber keyboard may also need to be physically changed if the language chosen does not match the correct keyboard layout.
French Z88 Example
This example shown above shows the Z88 set to France showing
- the FR symbol just below the OZ indicating the change of Keyboard
- The French Keyboard Layout
- A 1M AMD Flash Card in slot 1 with OZ 4.5
- A 1M RAM Card in slot 2
- The CARD display showing how the cards are split between RAM FILES and ROM.
IMPORTANT: If the amount of RAM displayed does not match the amount of physical RAM used, the Z88 has not reset itself correctly. Keep doing HARD RESET(s) until they are the same. In this case, 1024K matches the 1M RAM card used, so it is correct. See Memory Chips - Testing and Results to test them.
Check the RAM
As stated above it is a good idea at this point to check that the Z88 cards, like the RAM and Flash cards have been correctly recognised by OZ. These are displayed in the CARD screen. To display the values, start in the INDEX screen which should already be displayed. If not
1. Hold down the key (at the bottom left of the keyboard) and press the I key, to enter Index. Alternatively it may be selected by pressing the key at the lower left of the keyboard.
2. Press CARD
The CARD display has been changed to include the size of the file area and the amount of Free RAM that is available. This is a different example to the French Z88 Example and is what you would expect to see if you are using a 512/512 Flash/RAM card running OZ 4.7.1 in slot 1. The important numbers to note here are the ones displayed in the RAM column. 32K in slot 0 is the internal RAM and 512K is the correct amount in the 512/512 Flash/RAM card. If these numbers are slightly different than what is expected, do another Hard Reset to see if it has been corrected.
If the RAM value never reaches the expected value, there may be a RAM or a Card connector fault. See Memory Chips - Testing and Results to test them.
Set the Default Device
OZ makes an intelligent choice on which RAM it should set as its Default Device. This should normally be the largest RAM card you have. Make sure that you have enough RAM otherwise you will run out of space quite quickly. To see which device has been selected, the Panel needs to be selected.
Hold down the S key, to enter the Panel. Alternatively it may be selected by pressing the key at the lower left of the keyboard and then moving the cursor down to the Panel application and then Press to select it.
key (at the bottom left of the keyboard) and press the
The following screen will be displayed. If the Default device is the correct one shown, there is no need to change it. Get out of viewing this screen by pressing
to return to the previous screen.
If the Default device number has been changed, the following instructions regarding Select deVice in the Filer need to be followed.
1. Hold down the key (at the bottom left of the keyboard) and press the F key, to enter Filer.
Alternatively it may be selected by pressing the
Press to select it. key at the lower left of the keyboard and then using the key, move the cursor down to the Filer application.
2. Press Select deVice or using the key, move the cursor down until that command is displayed in the COMMANDS window, then press to select it.SV to
3. Move the cursor over to the right (using , then press the key to remove the number that is there, finally type in the RAM slot number you wish to use and then press to select it.
Set the clock
Note: Eazylink has the facility of synchronizing the Z88 clock to the Desktop's date and time. This method is quicker than using this manual method.
1. Press T to enter the clock popdown.
2. Press to highlight the Set option:
3. Press to enter the Set function, which displays the previous (incorrect) date and time, and will allow you to alter these to their correct values:
You can move the cursor between the time and date with and .
You can also move the cursor left and right along the digits with the and keys. Moving off the end of the date will position the cursor on the time, and vice versa.
4. Having positioned the cursor, simply type the correct time or date, using the numeric keys 0 to 9. The format of the new time and date should not change; if you type over the '/' or ':' signs, move the cursor back with the key and replace them.
When you have set the correct values, press to confirm them, and after about two-seconds the correct time and date will be displayed.
Finally, press to exit from the Clock.
Try typing text
1. Hold down the key (at the bottom left of the keyboard) and press the P key, to enter PipeDream.
Dear Sir, at the keyboard. Press the key to delete mistakes. If you type more than will fit on one line, PipeDream will automatically lay out the text for you.
There is usually no need to worry about switching your Cambridge Z88 off.
If you do not type anything for several minutes the machine will automatically switch off to conserve power.
You should always switch your Cambridge Z88 off before, for example, carrying it in a briefcase. This is because the keys may get pressed, disturbing what you were in the middle of doing, or keeping the Cambridge Z88 on and wasting the batteries.
To switch off press both
To switch the Cambridge Z88 on again at any time, press both