Also known as:

• Octek HIPPO DCA2 486

Known issues:

• Leaky Ni-Cd clock battery

The Ni-Cd battery may be leaking, risking damage to PCB layers & nearby components. Promptly remove the battery & clean corrosion/alkaline salts from the board. Use white vinegar to dissolve salts, but exercise caution as vinegar can corrode exposed metals. A thorough examination & repair may be needed. Replace battery with guide: https://github.com/wiretap-retro/Not-A-Varta

• Fake cache

The motherboard may include a non-functional or counterfeit SRAM cache, which can adversely affect performance. Signs of fake cache often include soldered QFP or DIP-chips labeled "WRITE-BACK" with traces that do not connect to the chipset.

• DIP chips can typically be removed and replaced with functional SRAM chips in sockets to restore cache functionality.
• QFP fake cache chips are often not replaceable with functional cache as the PCB footprints are not chipset connected.

Notes:

The boards have no traditional cache.

What is DynamiCache (ED-RAM)?

From the manual: A high speed memory that operates at 15ns rather than 70ns.

The two outside SIMM slots are for regular FPM, the other two are for DynamiCache.