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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.

Wide internally your Z88 to 512Kbytes

 

Z88 32K to 128K Upgrade

The memory chip described in the article above is no longer available.
Suitable replacements are listed below.