Sensoray 512 DOS Manual de usuario

SENSORAY CO., INC. PC/104 MPEG-1/2 VIDEO CODEC BOARD Model 512 October 19, 2001  Sensoray 2001 7313 SW Tech Center Dr. Tigard, OR 97

10If the environment variable is to be used, the statement below could be added to your AUTOEXEC.BAT file. SET X12PATH=<driver files directory&g

11C:\X12DOS\X12TSR -2 –S1 –C1 –AF00 –AC00 Loads X12TSR.EXE for two 512s and sets the video input to SVideo input 1 and the base address to F00 (he

125.2 VSETUP.EXE VSETUP.EXE is run from the command line and is used to modify the video and compression parameters of the 512. Once modified, the

13NOTE: VSETUP.EXE only changes the parameter(s) selected to be modified. All other parameters will remain unchanged. Example, C:\X12DOS\VSETUP -

146. The 512 Driver Interface All the functions of the 512 DOS device driver are called via the x86 software interrupt mechanism. The interrupt num

15 Member Description Mode

16 DroppedFrames Contains the number of frames that could not be compressed. When the video queue is not emptied at a sufficiently high rate,

176.2 X12_GETCMDPARAPTR function call The X12_GETCMDPARAPTR function obtains a real mode far pointer to the parameter data structure. A far pointer

186.3 X12_SENDCOMMAND function call The X12_SENDCOMMAND function is used to send a command to the 512 driver. See section 6.3 for command details.

196.4 The 512 commands The command described in this section are used with the X12_SENDCOMMAND function call (see section 6.2). These commands use

2 TABLE OF CONTENTS 1. Limited Warranty...

20Example: regs.x.ax = X12_VI_STOP; regs.x.si = X12_SENDCOMMAND + CARD0; //Select the driver function int86(X12INT,&regs,&reg

216.4.4 X12_VI_PUTDMADATA This command puts ES (elementary stream) MPEG encoded video data into the video DMA buffer (video queue). Entry: Paramet

22 6.4.5 X12_VI_SETINPUT This command selects the video input. Entry: Parameter Type Value Input short VIN1 for Video input 1

23Example: X12PARAM _far *Param; //Declare a pointer to an X12PARAM object union REGS regs; . . Param->InputType = SVIDEO; regs.x.ax = X12

24Appendix A: Quick setup and demo 1) Turn all power off. 2) Place 512 address selection jumpers on positions A8, A9 and A5. Base address CC0. 3) P

3 1. Limited Warranty Sensoray Company, Incorporated (Sensoray) warrants the model 512 hardware to be free from defects in material and workmanshi

4 2. Special Handling Instructions The Model 512 board contains CMOS circuitry that is sensitive to Electrostatic Discharge (ESD). Special care sho

5 3. Introduction The Sensoray Model 512 is an MPEG video encoder decoder board. Some of the feature include: General • Real time MPEG-2 and MPEG

6 4. Hardware Installation The 512 is installed on a PC/104 stack. Four mounting holes are provided, one in each corner, for mechanical stability.

7 4.1 Base address selection The jumpers marked A6 through A11 are for address selection. A “1” in the table below indicates an installed jumper.

8 4.2 Connectors The header J2 carries all the I/O signals. The pinout is given in Table 2. Pin Function Pin Function 1 Digital I/O 2 2 +5V

9 X12TSR.EXE. An API (application program interface) is provided to facilitate 512 application development. The API provides commands to start/st