AST RESEARCH, INC.

CUPID Tower ISA 486/25 and 486/33 (version 1) Model 202352-001

Processor               80486DX (on external CPU/Memory module)
Processor Speed         25/33MHz
Chip Set                AST
Max. Onboard DRAM       None (16MB on external CPU/Memory module)
SRAM Cache              None
BIOS                    AST
Dimensions              355mm x 266mm
I/O Options             32-bit external CPU/Memory module slot, 32-bit
                        external Memory module slot (2), floppy drive
                        interface, IDE interface, parallel port, serial
                        port (2)
NPU Options             4167 (on external CPU/Memory module)

[Image]

                                CONNECTIONS

  Purpose                Location     Purpose                  Location

  IDE interface             P1        Serial port 1 (COM1)       P11

  Parallel port             P2        Serial port 2 (COM2)       P12

  Third floppy drive        P3        IDE interface LED          P13
  interface

  Floppy drive              P4        32-bit external             S1
  interface (A: and                   CPU/Memory module
  B:)

  Front panel               P5        32-bit external          S2 & S3
  switches & LEDs                     Memory module slots

  Speaker                   P6        Optional ROM (even)         U4

  External battery          P8        Optional ROM (odd)          U5

                        USER CONFIGURABLE SETTINGS

                Function                   Switch SW1        Position

  »   Factory configured - do not alter     switch 1           open

  »   Password check enabled                switch 2          closed

      Password check disabled               switch 2           open

  »   Factory configured - do not alter     switch 3           open

  »   Keyboard select installed             switch 4           open

  »   Keyboard select not installed         switch 4          closed

[Image]

                        USER CONFIGURABLE SETTINGS

                Function                    Jumper           Position

  »   Parity check enabled                    E1              closed

      Parity check disabled                   E1               open

  Note:AST CPU/Memory module part number is 202361-002, 202361-005, or
  202361-006 for 25MHz

  systems or 202361-004 or 202361-007 for 33MHz systems.

                            DRAM CONFIGURATION

          Size                    Bank 0                   Bank 1

           2MB                  (2) 1M x 9                  NONE

           4MB                  (2) 1M x 9               (2) 1M x 9

           8MB                  (2) 4M x 9                  NONE

          10MB                  (2) 1M x 9               (2) 4M x 9

          16MB                  (2) 4M x 9               (2) 4M x 9

  Notes:128KB of DRAM is reserved for System and VGA BIOS shadowing and
  cannot be disabled.

  Up to two of the following memory boards may be installed in addition
  to the CPU/Memory

  module: AST part numbers 202275-002, 202275-004, 202275-006,
  202387-001,

  or 202387-005.