ADVANCED LOGIC RESEARCH, INC.

EVOLUTION IV 4/33 ISA VERSION

Processor       80486SX/80487SX/80486DX/80486DX2
Processor Speed 20/25/33/40/50(internal)/66(internal)MHz
Chip Set        Intel
Max. Onboard    52MB
DRAM
Cache           None
BIOS            Phoenix
Dimensions      356mm x 318mm
I/O Options     32-Bit VESA local bus slots (2), external cache card slot,
                floppy drive interface, hard drive interface, parallel
                port, PS/2 mouse port, serial ports (2)
NPU Options     None

[Image]

                                CONNECTIONS

  Purpose                 Location    Purpose                   Location

  Parallel port             CN1       Floppy drive interface      CN5

  Serial port 1             CN2       Hard drive interface        CN6

  Serial port 2             CN3       32-bit VESA local bus     S1 & S2
                                      slots

  PS/2 mouse port           CN4       External cache card          S3
                                      slot

                           DRAM CONFIGURATION

     Size         Bank 0         Bank 1         Bank 2        Bank 3

     4MB        (8) 1M x 4        NONE           NONE          NONE

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

     12MB       (8) 1M x 4    (1) 1M x 36    (1) 1M x 36       NONE

     16MB       (8) 1M x 4    (1) 1M x 36    (1) 1M x 36    (1) 1M x 36

     20MB       (8) 1M x 4    (1) 4M x 36        NONE          NONE

     24MB       (8) 1M x 4    (1) 1M x 36    (1) 4M x 36       NONE

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

     40MB       (8) 1M x 4    (1) 1M x 36    (1) 4M x 36    (1) 4M x 36

     52MB       (8) 1M x 4    (1) 4M x 36    (1) 4M x 36    (1) 4M x 36

                    CPU TYPE CONFIGURATION

        Type                 PS0                  PS1

       80486SX         pins 2 & 3 closed   pins 1 & 2 closed

       80487SX         pins 2 & 3 closed   pins 2 & 3 closed

       80486DX         pins 1 & 2 closed   pins 2 & 3 closed

      80486DX2         pins 1 & 2 closed   pins 2 & 3 closed

  No PGA installed     pins 1 & 2 closed   pins 1 & 2 closed

                   CPU SPEED CONFIGURATION

        Speed                FS0                  FS1

        20MHz          pins 1 & 2 closed   pins 1 & 2 closed

        25MHz          pins 2 & 3 closed   pins 1 & 2 closed

        33MHz          pins 1 & 2 closed   pins 2 & 3 closed

        40MHz          pins 2 & 3 closed   pins 2 & 3 closed

       50iMHz          pins 2 & 3 closed   pins 1 & 2 closed

       66iMHz          pins 1 & 2 closed   pins 2 & 3 closed