
INFORMTECH INTERNATIONAL, INC.

IT-VGACL VER. 1.0

Category                    Video
Video Types Supported       VGA
Video Processor             Cirrus Logic, Inc.
Highest Resolution          1280 x 1024
Supported
Data Bus Type               VESA local bus
Memory Type                 VRAM
Maximum Onboard Memory      2MB

[Image]

                                CONNECTIONS

       Purpose           Location           Purpose           Location

  15-pin analog             CN1        Terminating               R26
  video port                           resistor

  Terminating               R25
  resistor

                             INTERRUPT REQUEST

                  IRQ9                                 JP11

                 Disabled                             Open

                   Enabled                            Closed

                                   BS16

                  BS16                                 JP12

                  Enabled                            Closed

                  Disabled                             Open

                                    OEL

                   OEL                                 JP13

                  Enabled                            Closed

                  Disabled                             Open

                                    OEH

                   OEH                                 JP14

                  Enabled                            Closed

                  Disabled                             Open

                                CLOCK SPEED

           Setting                    JP15                   JP16

            50.11MHz                 Open                   Open

             37.58MHz                Closed                 Closed

             42.16MHz                Closed                  Open

             44.74MHz                 Open                  Closed

                        VIDEO MEMORY CONFIGURATION

         Size                   Bank 0                    Bank 1

           1MB            (8) 256K x 4 VRAM               NONE

            2MB            (8) 256K x 4 VRAM         (2) 512K x 8 VRAM

  Note:If terminating resistors R25 and R26 are oriented horizontally,
  then the 512K x 8 VRAM chips are Bank 0.

                       MISCELLANEOUS TECHNICAL NOTES

  Some cards may have a zero-wait state jumper installed. The Pins-Closed
                configuration enables the zero-wait state.

