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Last Post 10 Nov 2003 03:14 PM by  Anonymous
LH75401-10 2MB SRAM Hardware Upgrade.
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10 Nov 2003 03:14 PM
    The LH75401-10 card engine can support up to 2MB SRAM (stock is 512 KB). Changes in Hardware and Software must be made to account for this.

    If you add additional SRAM to the card engine please refer to the LH75401-10 card engine schematics (pg. 4) for memory location and jumper setting changes.

    For Example, if you want to upgrade to 2MB:
    1. Populate U5, U6, U20, U21 with 512 KB SRAM, (Part number
    2. change JP1 and JP2 jumper settings to both '+', (as shown in 'SRAM
    DENSITY CONFIGURATION BITS ' Table on pg. 4 of schematics)

    The Bolo/Lolo that shipped with the LH75401-10 Card engine is designed to support 512KB SRAM. It will not support the additional SRAM.

    Configure your software to account for the additional SRAM.

    Andrew Wawra
    Logic Product Development
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