The Z88 has 32K of internal RAM. This is not enough memory for every day use.
The RAM memory can be increased two different ways.
- Externally - by changing the RAM chip in an external card.
- Internally - by changing the 32K RAM chip
Choosing a memory chip that works with the Z88 is important. Manufactures and the availability of chips change. See Memory Chips for the most 'up-to-date' results.
EPROMs and ROMs store OZ, the Z88's operating system and are used for permanent storage. These can be replaced with Flash
The Flash memory can be increased two different ways.
- Externally - by changing the EPROM chip in an external card.
- Internally - by changing the 32K ROM chip containing the operating system.
Articles on Modifying Motherboards
Before you start why not read these articles so that you can decide if it what you would like to do.
 | Motherboard Conversion in Service Manual Z88 32kb to 512kb Memory Upgrade Original Article by Don Walterman Z88 Motherboard Modifications - (This link has a Norton warning on it ) The EPROM chip described in the article above is no longer available. |
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The memory chip described in the article above is no longer available. |