
AST RESEARCH, INC.

PREMIUM/286

MODELS 202143-003, -004 & -006

Processor                80286
Processor Speed          10MHz
Chip Set                 AST
Max. Onboard DRAM        None (2/4 or 8/16MB on external memory card(s))
Cache                    None
BIOS                     AST
Dimensions               330mm x 218mm
I/O Options              32-bit external memory/CPU card slot (2)

                         Floppy drive interface

                         Parallel port

                         Serial port
NPU Options              80287

[Image]

                                CONNECTIONS

  Purpose                 Location      Purpose                Location

  32-bit external            CN1        Front panel              J23
  memory/CPU card                       switches & LEDs

  32-bit external            CN2        Speaker                  J24
  memory/CPU card

  Floppy drive               J19        Optional ROM (odd)       U11
  interface (A: and
  B:)

  Third floppy drive         J20        Optional ROM             U13
  interface                             (even)

  External battery           J22

[Image]

                                CONNECTIONS

  Purpose                   Location   Purpose                   Location

  Serial port 1              COM1      Keyboard                   KYBD

  Parallel port              LPT1

                         SERIAL PORT CONFIGURATION

    Serial Port      Jumper E22-E23       Jumper E28        Jumper E29
      (COM1)

    COM1: using         pins 1 & 2          closed             open
       IRQ4              closed

    COM2: using         pins 2 & 3           open             closed
       IRQ3              closed

                        PARALLEL PORT CONFIGURATION

    Parallel Port     Jumper E24    Jumper E25   Jumper E26   Jumper E27
       (LPT)

  LPT1: using IRQ7      closed        open         closed        open

  LPT2: using IRQ7       open        closed         open        closed

               BIOS TYPE CONFIGURATION

  BIOS Type    Jumper E3    Jumper E4    Jumper E5

    27128        open          open        closed

    27256       closed        closed        open

                      OPTIONAL ROM TYPE CONFIGURATION

  ROM Type     Address      Jumper E9     Jumper      Jumper      Jumper
                                           E10         E11         E12

   27128      F000-F7FFh      open        open       closed       open

   27128      E800-EFFFh      open        open        open       closed

   27256      E000-EFFFh     closed      closed       open        open

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

      NPU speed select 8MHz                 E1 & E16           open

                                              E15             closed

      NPU speed select 5MHz                 E1 & E16          closed

                                              E15              open

     BIOS wait state select one               E2              open

      BIOS wait states select zero             E2             closed

     Latched PROM BIOS disabled               E6              open

      Latched PROM BIOS enabled                E6             closed

     Latched PROM BIOS (for optional      E7 and E14        E7 open,
      ROMs) disabled
                                                            E14 closed

      Latched PROM BIOS (for optional      E7 and E14       E7 closed,
      ROMs) enabled
                                                            E14 closed

     Optional ROM wait state select           E8              open
      one

      Optional ROM wait states select          E8             closed
      zero

     Factory configured - do not             E13              open
      alter

     I/O bus wait states select two          E17             closed
      (at 10MHz operation)

      I/O bus wait state select one           E17              open
      (at 10MHz operation)

     Factory configured - do not             E18              open
      alter

     Factory configured - do not           E19-E20           closed
      alter

     Factory configured - do not             E21             closed
      alter

     Factory configured - do not           E31-E32          pins 1 & 2
      alter                                                   closed

     Floppy drive interface enabled          E33              open

      Floppy drive interface disabled         E33             closed

     Early Address Latch Enabled             E40             closed
      (#EALE) signal

      Buffered Address Latch Enable           E40              open
      (#BALE) signal

[Image]

            USER CONFIGURABLE SETTINGS FOR FASTRAM MEMORY BOARD

              Function                  Jumper/Switch        Position

     Parity check enabled                   E1               closed

      Parity check disabled                  E1                open

     Wait states select zero                E2               closed

      Wait state select one                  E2                open

     Page mode disabled                SW1/switch 5          closed

      Page mode enabled                 SW1/switch 5           open

     Board installed select first      SW1/switch 6          closed
      FASTram board installed

      Board installed select            SW1/switch 6           open
      second FASTram board
      installed

            DRAM CONFIGURATION FOR FASTRAM MEMORY BOARD

    Size         Bank 0       Bank 1        Bank 2        Bank 3

    512KB      (18) 41256      NONE          NONE          NONE

     1MB       (18) 41256   (18) 41256       NONE          NONE

    1.5MB      (18) 41256   (18) 41256    (18) 41256       NONE

     2MB       (18) 41256   (18) 41256    (18) 41256    (18) 41256

            DRAM SWITCH CONFIGURATION FOR FASTRAM MEMORY BOARD

  Recognized by   SW1/switch     SW1/switch    SW1/switch    SW1/switch 4
     System           1              2             3

     128KB          closed        closed         closed         closed

     256KB           open         closed         closed         closed

     384KB          closed         open          closed         closed

     512KB           open          open          closed         closed

     640KB          closed        closed          open          closed

     768KB           open         closed          open          closed

     896KB          closed         open           open          closed

     1024KB          open          open           open          closed

     1152KB         closed        closed         closed          open

     1280KB          open         closed         closed          open

     1408KB         closed         open          closed          open

     1536KB          open          open          closed          open

     1664KB         closed        closed          open           open

     1792KB          open         closed          open           open

     1920KB         closed         open           open           open

     2048KB          open          open           open           open

          BASE I/O ADDRESS CONFIGURATION FOR FASTRAM MEMORY BOARD

   Base I/O    SW1/switch 7    SW1/switch 8   SW1/switch 9    SW1/switch
   Address                                                        10

    0208h         closed         closed         closed          closed

   0218h 1         open          closed         closed          closed

   0258h 2         open          closed          open           closed

    0268h         closed          open           open           closed

    02A8h         closed          open          closed           open

    02B8h          open           open          closed           open

    02E8h         closed          open           open            open

  Note 1 :This setting is recommended when this is the first FASTram
  Memory Board installed.

  Note 2 :This setting is recommended when this is the second FASTram
  Memory Board installed.

[Image]

       USER CONFIGURABLE SETTINGS FOR ADVANCED FASTRAM MEMORY BOARD

                Function                     Jumper          Position

     Factory configured - do not alter       E0-E1          pins 2 & 3
                                                              closed

     Board installed select first             E2              open
      FASTram board installed
                                               E4             closed

      Board installed select second            E2             closed
      FASTram board installed
                                               E4              open

     Memory installed select as               E3             closed
      expanded

      Memory installed select as paged         E3              open

  Note:Parity, wait states, size, and base I/O address are set using the
  software configuration utility.

           DRAM CONFIGURATION FOR ADVANCED FASTRAM MEMORY BOARD

     Size          Bank 0        Bank 1         Bank 2         Bank 3

     512KB      (2) 256K x 9      NONE           NONE           NONE

      1MB       (2) 256K x 9   (2) 256K x 9      NONE           NONE

     1.5MB      (2) 256K x 9   (2) 256K x 9   (2) 256K x 9      NONE

      2MB       (2) 256K x 9   (2) 256K x 9   (2) 256K x 9  (2) 256K x 9

      2MB        (2) 1M x 9       NONE           NONE           NONE

      3MB       (2) 256K x 9   (2) 256K x 9   (2) 1M x 9        NONE

      4MB        (2) 1M x 9    (2) 1M x 9        NONE           NONE

      5MB       (2) 256K x 9   (2) 256K x 9   (2) 1M x 9     (2) 1M x 9

      6MB        (2) 1M x 9    (2) 1M x 9     (2) 1M x 9        NONE

      8MB        (2) 1M x 9    (2) 1M x 9     (2) 1M x 9     (2) 1M x 9

