Epson Equity 386/20 Product Support Bulletin(s) - Page 4
Engineering Change Notice EQ386/20-001A
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EPSON AMERICA, INC. Product Support Bulletin Subject: Equity 386/20 Using Memory Above 2MB Date: 10/09/92 Page(s): 1 of 1 PSB No: S-0123A Originator: JDB/KAS The purpose of this bulletin is to provide information on a problem which may occur when using more than 2MB of memory in the Equity 386/20 computer. When expanding memory above 2MB for memory intensive applications (Networking software, AUTOCAD, LOTUS 1-2-3), insure that ROM BIOS version 1.11 or higher and the corresponding CHIPS set are being used, and a Revision 02 CHET-RM board is installed. If the Equity 386/20 is to be used in the applications mentioned above and it does not have the component versions described above, they can be ordered with the following part numbers: ROM BIOS CHIPS Set (current) (Rel. 2.16) CHET-RM Board Reference Disk Y184802004 (CHE-B5) Lot. 9B Y184801004 (CHE-A5) Lot. 9C X403823021 (7L) Memory Controller X403822061 (9F) Int. Peripheral Controller Y184202100 (02 rev #) Required for User-Defined drive types and types 59-63 and the use of 1.44MB FDD as drive A:. (When using BIOS rel 2.10 or higher). Available on the Epson RBBS. The problem does not occur in units that have this configuration. NOTE The chips in location 7L and 9F can be identified by the numbers printed on the top of the chips, these are the old and new numbers: LOCATION 7L 7L 9F 9F TYPE OLD NEW OLD NEW CHIP NUMBER P82C302-20 P82C302C P82C206F-1 P82C206H PART NUMBER X403823020 X403823021 X403822060 X403822061 REFERENCE: Engineering Change Notice EQ386/20-001A