When the Z88 came out, there was no facility to 'Blow your own ROM,' This was because the Z88 Application software was supplied on an EPROM card. As larger EPROM cards became available, it was possible to make compilations but there were only a few people around who had the skills to link the applications together, writing addresses on the back of envelopes and using Hex calculators. This all changed when Garry Lancaster wrote ROMcombiner. This allowed users to combine applications themselves. When the Flash cards become available, blowing those were added, so at last, all the applications that were written could be written onto one 1M card.
Now that all the companies that wrote software for the Z88 are no longer marketing their products it is now possible to download the ROM image and blow your own.
Note: All data on the flash card will be deleted. Backup this data beforehand if required.
The Z88 needs to have the following cards as a minimum configuration.
Slot 1 needs to have at least 128K and at least enough RAM to store the image.
128K is enough to space to store Eazylink and Flashstore, but not enough to store OZ 4.5.
OZ 4.5 requires at least 256K.
Ideally if you are running OZ 4.5 in slot 1, with 512K of RAM, that is enough RAM to store most images.
OZ 4.5 also has Eazylink installed on it so the additional Computer link pop-down is not required.
|Slot 2 may have another EPROM or Flash card with the Computer Link in it|
|A blank EPROM or Flash Card to store the applications or files.|
|(Optional) EPROM Eraser to erase the EPROM card (if required).|
Connecting the Z88 to the Desktop to transfer the programs to the Z88.
See Computer Links for more details
Making an Eazylink/Flashstore ROM
If you have
- 32K EPROM (this can be a MAC LINK or PC LINK card)
- EPROM ERASER
consider building a copy of this first, so that you can use Eazylink to transfer the OZ image, see Creating Eazylink/Flashstore rather than using the slower Imp/Export pop-down.
If you unable to use a separate card, you can temporary use it in same flashcard that OZ will be in. The procedure would be:-
- Save Eazylink ROM to the Flashcard
- Download the Files to RAM
- Delete the Eazylink image from the Flash card.
- Save the OZ image from RAM to the Flash card.
Create / Update OZ
If you want to get the latest copy of OZ go to Preparing the Z88
Before doing a procedure like this it is prudent to do some preliminary checks.
To do these tests, please select the INDEX screen with either thekey or I.
If you have any extra RAM, the largest size you have should be used in Slot 1, unless you are running OZ 4.5 in which case it needs to be in Slot 2. This is to ensure that the Z88 "type" is an "Expanded Machine." This can be checked using theINFO command.
Depending on what configuration you have, the amount of RAM you have should be reflected in the following command. For example, if you had a 512K/512K Flash/RAM card running OZ4.5 in slot 1, 1M RAM in slot 2 and a 1M Flash card in slot 3.
In the INDEX check that the Z88 recognises the extra memory by giving theCARD command. You should get the following result.
Here are some other examples on a standard Z88.
The standard Z88 does not recognise the file area.
If the values shown in the RAM do not display these values, Backup the Z88 and give the Z88 a Hard Reset.
and keep going around the loop again until the values are correct.
Pressto return to the main screen.
Check Default Device
Check that the default device to the RAM is correct by selecting the PanelS.
In this case the value of
:RAM.1 is correct.
Pressto return to the main screen.
Set Default Device
Set the default device to the RAM that is being used by selecting the Panel
:RAM.0 in the Default device field:-
and replace it with either a 1 or 2 depending which slot the RAM is in.
Select the FilerF .
PressSV to Select deVice
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 1 then press to select it.
Getting the image
There are different ways of obtaining the image of an application.
- Writing your own
Download the Application
Z88 Applications are stored in 16K size files called banks. To keep these files together, they are stored in a zip file, which also compresses the collection. There are a number of steps that need to take place. These are:-
- Download the zip file from the internet
- Unzip the file either on the
- Desktop or
- Transfer either the zip or un-ziped files to the Z88
- Run ROMcombiner or ROMupdate on the Z88 to blow the image into the Flash or EPROM.
The examples given here are
|Application / Pop-down||Notes|
Use your 32K EPROM (this can be a MAC LINK or PC LINK card) and EPROM ERASER to build Eazylink fot transfer, rather than the slower Imp/Export route. Alternatively, use the Flash card temporarily, until the OZ image replaces it.
|Creating OZ||Update your existing copy or build one from scratch.|
|Creating SpellMaster||An example of building a 3rd party software.|
Writing your Own Application