Kontron MOPSlcdGX1, Руководство по эксплуатации продукта

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MOPSlcdGX1 Product Manual Appendix F: JIDA Standard
Kontron Embedded Modules Revision 1.3 61
25. APPENDIX F: JIDA STANDARD
Every board with an on-board BIOS extension supports the following function calls,
which supply information about the board. Jump
tec Intelligent Device Architecture
(JIDA) functions are called via Interrupt 15h. Functions include:
•
AH=Eah
•
AL=function number
•
DX=4648h (security word)
•
CL=board number (starting with 1)
The interrupt returns a CL
≠
0 if a board with the number specified in CL does not exist.
CL will equal 0 if the board number exists. In this case, the content of DX determines if
the operation was successful. DX=6B6Fh indicates success; other values indicate an
error.
25.1 Obtaining Information about Boards that Use the JIDA Standard
To obtain information about the installed boards that follow the JIDA standard, use the
following procedure.
1. Call Get BIOS ID with CL=1.
The name of the first device installed will be returned. If you see the result
Board
exists (CL=0), increment CL, and call Get BIOS ID again.
2. Repeat until you see Board not present (CL
≠
0).
You now know the names of boards that follow the JIDA standard.
3. You can find out more information about a specific board by calling the appropriate
inquiry function with the board’s number in CL.
Note:
Association between board and board number may change because of configuration
changes. Do not rely on associations between board and board number. Use the
above procedure to determine the association between board and board number.
Refer to the JIDA manual in the jidai110.zip folder for further information on
implementing and using JIDA calls with C sample code.
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