
ACER, INC.

ACERMATE 486/G (A1GX-2) (CACHE)

Device     Mainboard
Type
Processor  80486/80486(WB)/CX486DX2/IBM486DX2/TI486DX2/

           (SL)AM486DX2(SV8T)/(SL)AM486DX2(SV8B)/P24C/P24D/AMDNV8T/

           AMDNV8B/CX486DX4/IBM486DX4/(SL)AM486DX4(SV8T)/

           (SL)AM486DX4(SV8B)/P24T/CX 5X86/IBM 5X86
Processor  25/33/40/50(internal)/66(internal)/75(internal)/100(internal)MHz
Speed
Chip Set   ALI M1429
Video Chip Cirrus Logic
Set
Maximum    36MB
Onboard
Memory
Maximum    2MB
Video
Memory
Cache      128/256KB
BIOS       Unidentified
Dimensions 285mm x 220mm
I/O        Ethernet 10BaseT connector, floppy drive interface, IDE
Options    interfaces (2), parallel port, PS/2 mouse port, serial ports
           (2), VGA feature connector, VGA port, riser slot

[Image]

                                CONNECTIONS

  Purpose                  Location    Purpose                  Location

  Chassis fan power           C1       Ethernet 10BaseT           CN6
                                       connector

  Feature connector           C2       Floppy drive               CN7
                                       interface

  VGA port                   CN1       IDE interface 2            CN8

  Parallel port              CN2       IDE interface 1            CN9

  Serial port 2              CN3       VGA feature connector      CN10

  Serial port 1              CN4       Riser slot                 SL1

  PS/2 mouse port            CN5

                        USER CONFIGURABLE SETTINGS

               Function                    Label           Position

     Factory configured - do not          CN11          Unidentified
      alter

     Factory configured - do not           J1           Unidentified
      alter

     Factory configured - do not           J2           Unidentified
      alter

     Factory configured - do not           J3           Unidentified
      alter

      BIOS type select Acer                 JP1        Pins 2 & 3 closed

      BIOS type select OEM                  JP1        Pins 1 & 2 closed

      Password disabled                     JP2        Pins 2 & 3 closed

      Password enabled                      JP2        Pins 1 & 2 closed

      Normal boot enabled                   JP3        Pins 2 & 3 closed

      COM1 boot enabled                     JP3        Pins 1 & 2 closed

     Factory configured - do not           JP4          Unidentified
      alter

      On board I/O enabled                  JP6        Pins 2 & 3 closed

      On board I/O disabled                 JP6        Pins 1 & 2 closed

      On board video enabled                JP9        Pins 2 & 3 closed

      On board video disabled               JP9        Pins 1 & 2 closed

      IDE address select 074H, 078H,       JP10        Pins 2 & 3 closed
      07CH

      IDE address select 0F4H, 0F8H,       JP10        Pins 1 & 2 closed
      0FCH

     Factory configured - do not          JP13          Unidentified
      alter

      Reset button enabled                 JP28        Pins 2 & 3 closed

      Reset/green PC button enabled        JP28        Pins 1 & 2 closed

      IDE interface enabled                JP29        Pins 2 & 3 closed

      IDE interface disabled               JP29        Pins 1 & 2 closed

      Feature connector enabled            JP33        Pins 1 & 2 closed

      I2C interface enabled                JP33        Pins 2 & 3 closed

      IDE LED enabled                      JP35              Open

      IDE, FDD, CD-ROM LED enabled         JP35             Closed

      BIOS type select EPROM               JPX1        Pins 2 & 3 closed

      BIOS type select flash               JPX1        Pins 1 & 2 closed

                    SIMM CONFIGURATION

     Size          Bank 0         Bank 1        Bank 2

      4MB           4MB            None          None

      4MB           None       (1) 1M x 36       None

      8MB           4MB        (1) 1M x 36       None

      8MB           None       (1) 2M x 36       None

      8MB           None       (1) 1M x 36    (1) 1M x 36

     12MB           4MB        (1) 2M x 36       None

     12MB           4MB        (1) 1M x 36    (1) 1M x 36

     12MB           None       (1) 1M x 36    (1) 2M x 36

     16MB           4MB        (1) 2M x 36    (1) 1M x 36

     16MB           None       (1) 4M x 36       None

     16MB           None       (1) 2M x 36    (1) 2M x 36

     20MB           4MB        (1) 4M x 36       None

     20MB           None       (1) 1M x 36    (1) 4M x 36

     24MB           4MB        (1) 1M x 36    (1) 4M x 36

     24MB           None       (1) 2M x 36    (1) 4M x 36

     28MB           4MB        (1) 2M x 36    (1) 4M x 36

     32MB           None       (1) 4M x 36    (1) 4M x 36

     36MB           4MB        (1) 4M x 36    (1) 4M x 36

               SIMM JUMPER CONFIGURATION

            Size                        JP5

  On board memory enabled        Pins 2 & 3 closed

  On board memory disabled       Pins 1 & 2 closed

                    CACHE CONFIGURATION

     Size          Bank 0         Bank 1          TAG

     128KB      (4) 32K x 8        None       (1) 32K x 8

     256KB      (4) 32K x 8    (4) 32K x 8    (1) 32K x 8

                  CACHE JUMPER CONFIGURATION

        Size                 JP30                 JP31

        128KB          Pins 1 & 2 closed   Pins 1 & 2 closed

        256KB          Pins 2 & 3 closed   Pins 2 & 3 closed

                    VIDEO MEMORY CONFIGURATION

      Size            Bank 0           Bank 1          Bank 2

      512KB       (1) 256K x 16         None            None

       1MB        (1) 256K x 16    (1) 256K x 16        None

       2MB        (1) 256K x 16    (1) 256K x 16    (2) 256K x 16

                     CPU SPEED SELECTION

        Speed                JP11                 JP12

        25MHz          Pins 1 & 5 closed   Pins 1 & 2 closed

        33MHz          Pins 1 & 5 closed   Pins 1 & 2 closed

        40MHz          Pins 2 & 6 closed   Pins 2 & 3 closed

       50iMHz          Pins 1 & 5 closed   Pins 1 & 2 closed

       66iMHz          Pins 1 & 5 closed   Pins 1 & 2 closed

       75iMHz          Pins 1 & 5 closed   Pins 1 & 2 closed

       100iMHz         Pins 1 & 5 closed   Pins 1 & 2 closed

                            CPU TYPE SELECTION

         Type           JP17A      JP17B     JP17C      JP17D     JP17E

        80486           2 & 3      2 & 3     2 & 3      2 & 3     2 & 3

      80486 (WB)        2 & 3      2 & 3     2 & 3      2 & 3     2 & 3

      CX486DX2 *        1 & 2      1 & 2     1 & 2      1 & 2     1 & 2

     IBM486DX2 *        1 & 2      1 & 2     1 & 2      1 & 2     1 & 2

      TI486DX2 *        1 & 2      1 & 2     1 & 2      1 & 2     1 & 2

       CX486DX2         1 & 2      1 & 2     1 & 2      1 & 2     1 & 2

      IBM486DX2         1 & 2      1 & 2     1 & 2      1 & 2     1 & 2

       TI486DX2         1 & 2      1 & 2     1 & 2      1 & 2     1 & 2

  (SL)AM486DX2(SV8T)    2 & 3      2 & 3     2 & 3      2 & 3     2 & 3

  (SL)AM486DX2(SV8B)    2 & 3      2 & 3     2 & 3      2 & 3     2 & 3

         P24C           2 & 3      2 & 3     2 & 3      2 & 3     2 & 3

         P24D           2 & 3      2 & 3     2 & 3      2 & 3     2 & 3

       AMD NV8T         2 & 3      2 & 3     2 & 3      2 & 3     2 & 3

       AMD NV8B         2 & 3      2 & 3     2 & 3      2 & 3     2 & 3

       CX486DX4         1 & 2      1 & 2     1 & 2      1 & 2     1 & 2

      IBM486DX4         1 & 2      1 & 2     1 & 2      1 & 2     1 & 2

  (SL)AM486DX4(SV8T)    2 & 3      2 & 3     2 & 3      2 & 3     2 & 3

  (SL)AM486DX4(SV8B)    2 & 3      2 & 3     2 & 3      2 & 3     2 & 3

         P24T           2 & 3      2 & 3     2 & 3      2 & 3     2 & 3

       CX 5X86          1 & 2      2 & 3     2 & 3      Open       Open

       IBM 5X86         1 & 2      2 & 3     2 & 3      Open       Open

  Note: Pins designated should be in the closed position. * = 3.3v, 3.45v
  CPU.

                        CPU TYPE SELECTION (CONT)

         Type           JP17F      JP17G      JP18      JP19      JP26A

        80486           2 & 3      2 & 3      1 & 2     2 & 3     2 & 3

      80486 (WB)        2 & 3      2 & 3      1 & 2     1 & 2     1 & 2

      CX486DX2 *        1 & 2      1 & 2      2 & 3     1 & 2     2 & 3

     IBM486DX2 *        1 & 2      1 & 2      2 & 3     1 & 2     2 & 3

      TI486DX2 *        1 & 2      1 & 2      2 & 3     1 & 2     2 & 3

       CX486DX2         1 & 2      1 & 2      2 & 3     1 & 2     2 & 3

      IBM486DX2         1 & 2      1 & 2      2 & 3     1 & 2     2 & 3

       TI486DX2         1 & 2      1 & 2      2 & 3     1 & 2     2 & 3

  (SL)AM486DX2(SV8T)    2 & 3      2 & 3      2 & 3     1 & 2     2 & 3

  (SL)AM486DX2(SV8B)    2 & 3      2 & 3      1 & 2     1 & 2     1 & 2

         P24C           2 & 3      2 & 3      1 & 2     2 & 3     2 & 3

         P24D           2 & 3      2 & 3      1 & 2     1 & 2     1 & 2

       AMD NV8T         2 & 3      2 & 3      1 & 2     2 & 3     2 & 3

       AMD NV8B         2 & 3      2 & 3      1 & 2     2 & 3     2 & 3

       CX486DX4         1 & 2      1 & 2      2 & 3     1 & 2     2 & 3

      IBM486DX4         1 & 2      1 & 2      2 & 3     1 & 2     2 & 3

  (SL)AM486DX4(SV8T)    2 & 3      2 & 3      2 & 3     1 & 2     2 & 3

  (SL)AM486DX4(SV8B)    2 & 3      2 & 3      1 & 2     1 & 2     1 & 2

         P24T           2 & 3      2 & 3      1 & 2     1 & 2     1 & 2

       CX 5X86           Open       Open      Open      1 & 2      Open

       IBM 5X86          Open       Open      Open      1 & 2      Open

  Note: Pins designated should be in the closed position. * = 3.3v, 3.45v
  CPU.

                        CPU TYPE SELECTION (CONT)

         Type           JP26B      JP26C     JP26D      JP26E     JP26F

        80486           2 & 3      2 & 3     2 & 3      2 & 3     2 & 3

      80486 (WB)        1 & 2      1 & 2     1 & 2      1 & 2     1 & 2

      CX486DX2 *        2 & 3      2 & 3     2 & 3      2 & 3     2 & 3

     IBM486DX2 *        2 & 3      2 & 3     2 & 3      2 & 3     2 & 3

      TI486DX2 *        2 & 3      2 & 3     2 & 3      2 & 3     2 & 3

       CX486DX2         2 & 3      2 & 3     2 & 3      2 & 3     2 & 3

      IBM486DX2         2 & 3      2 & 3     2 & 3      2 & 3     2 & 3

       TI486DX2         2 & 3      2 & 3     2 & 3      2 & 3     2 & 3

  (SL)AM486DX2(SV8T)    2 & 3      2 & 3     2 & 3      2 & 3     2 & 3

  (SL)AM486DX2(SV8B)    1 & 2      1 & 2     1 & 2      1 & 2     1 & 2

         P24C           2 & 3      2 & 3     2 & 3      2 & 3     2 & 3

         P24D           1 & 2      1 & 2     1 & 2      1 & 2     1 & 2

       AMD NV8T         2 & 3      2 & 3     2 & 3      2 & 3     2 & 3

       AMD NV8B         2 & 3      2 & 3     2 & 3      2 & 3     2 & 3

       CX486DX4         2 & 3      2 & 3     2 & 3      2 & 3     2 & 3

      IBM486DX4         2 & 3      2 & 3     2 & 3      2 & 3     2 & 3

  (SL)AM486DX4(SV8T)    2 & 3      2 & 3     2 & 3      2 & 3     2 & 3

  (SL)AM486DX4(SV8B)    1 & 2      1 & 2     1 & 2      1 & 2     1 & 2

         P24T           1 & 2      1 & 2     1 & 2      1 & 2     1 & 2

       CX 5X86           Open      Open      1 & 2      1 & 2     2 & 3

       IBM 5X86          Open      Open      1 & 2      1 & 2     2 & 3

  Note: Pins designated should be in the closed position. * = 3.3v, 3.45v
  CPU.

                        CPU TYPE SELECTION (CONT)

         Type             JP26G         JP26H        JP27         JP32

        80486             2 & 3         2 & 3       3 & 4        1 & 2

      80486 (WB)          1 & 2         1 & 2       3 & 4        1 & 2

      CX486DX2 *          2 & 3         2 & 3       3 & 4        1 & 2

     IBM486DX2 *          2 & 3         2 & 3       3 & 4        1 & 2

      TI486DX2 *          2 & 3         2 & 3       3 & 4        1 & 2

       CX486DX2           2 & 3         2 & 3       3 & 4        2 & 3

      IBM486DX2           2 & 3         2 & 3       3 & 4        2 & 3

       TI486DX2           2 & 3         2 & 3       3 & 4        2 & 3

  (SL)AM486DX2 (SV8T)     2 & 3         2 & 3       2 & 3        1 & 2

  (SL)AM486DX2 (SV8B)     1 & 2         1 & 2       2 & 3        1 & 2

         P24C             2 & 3         2 & 3       3 & 4        1 & 2

         P24D             1 & 2         1 & 2       3 & 4        1 & 2

       AMD NV8T           2 & 3         2 & 3       3 & 4        1 & 2

       AMD NV8B           2 & 3         2 & 3       3 & 4        1 & 2

       CX486DX4           2 & 3         2 & 3       3 & 4        1 & 2

      IBM486DX4           2 & 3         2 & 3       3 & 4        1 & 2

  (SL)AM486DX4 (SV8T)     2 & 3         2 & 3       3 & 4        1 & 2

  (SL)AM486DX4 (SV8B)     1 & 2         1 & 2       3 & 4        1 & 2

         P24T             1 & 2         1 & 2       1 & 2        1 & 2

       CX 5X86            1 & 2         Open        3 & 4        1 & 2

       IBM 5X86           1 & 2         Open        3 & 4        1 & 2

  Note: Pins designated should be in the closed position. * = 3.3v, 3.45v
  CPU.

                        CPU TYPE SELECTION (CONT)

         Type             JP36A        JP36B        JP36C        JP36D

        80486             2 & 3        2 & 3        2 & 3        2 & 3

      80486 (WB)          2 & 3        2 & 3        2 & 3        2 & 3

      CX486DX2 *          1 & 2        1 & 2        1 & 2        1 & 2

     IBM486DX2 *          1 & 2        1 & 2        1 & 2        1 & 2

      TI486DX2 *          1 & 2        1 & 2        1 & 2        1 & 2

       CX486DX2           1 & 2        1 & 2        1 & 2        1 & 2

      IBM486DX2           1 & 2        1 & 2        1 & 2        1 & 2

       TI486DX2           1 & 2        1 & 2        1 & 2        1 & 2

  (SL)AM486DX2 (SV8T)     1 & 2        1 & 2        1 & 2        1 & 2

  (SL)AM486DX2 (SV8B)     1 & 2        1 & 2        1 & 2        1 & 2

         P24C             2 & 3        2 & 3        2 & 3        2 & 3

         P24D             2 & 3        2 & 3        2 & 3        2 & 3

       AMD NV8T           2 & 3        2 & 3        2 & 3        2 & 3

       AMD NV8B           2 & 3        2 & 3        2 & 3        2 & 3

       CX486DX4           1 & 2        1 & 2        1 & 2        1 & 2

      IBM486DX4           1 & 2        1 & 2        1 & 2        1 & 2

  (SL)AM486DX4 (SV8T)     1 & 2        1 & 2        1 & 2        1 & 2

  (SL)AM486DX4 (SV8B)     1 & 2        1 & 2        1 & 2        1 & 2

         P24T             2 & 3        2 & 3        2 & 3        2 & 3

       CX 5X86            1 & 2        1 & 2        1 & 2        1 & 2

       IBM 5X86           1 & 2        1 & 2        1 & 2        1 & 2

  Note: Pins designated should be in the closed position. * = 3.3v, 3.45v
  CPU.

                    DMA CHANNEL SELECTION

       Channel               JP7                  JP8

          1            Pins 1 & 2 closed   Pins 1 & 2 closed

          3            Pins 2 & 3 closed   Pins 2 & 3 closed

