OPTIONS Listed below are the options for the 486 System which are available through upgrade kits (U/K). o An additional 384 Kbytes of RAM for a total of 896 Kbytes of main memory. NOTE The standard system is configured with 512 Kbytes of memory. 256 Kbytes are on the CPU board and the other 256 Kbytes are on a pair of memory boards (128 Kbytes each). The memory upgrade kit provides a 512 Kbyte board which is then exchanged with one of the existing 128 Kbyte memory boards. o An optional 20 Mbyte add-on hard disk drive unit. RELATED DOCUMENTS The following Altos publications on the Model 486 Computer System may be referenced to supplement your overall understanding.
690-15889-001 Setting Up Your 486 Workstation 690-15927-001 Altos 486 SOX Diagnostic Manual 690-15683-001 486 Maintenance Manual 690-15998-001 486 Illustrated Parts List Manual The Setting Up and Diagnostic Manuals are shipped with the system. The Maintenance Manual and Illustrated Parts List Manual can be purchased. 1-4