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5.3. Contents of the motherboard directory

The motherboard directory, that is, the directory named MB, contains configuration directories for the supported motherboard variants. Each subdirectory name matches the HBI number of the motherboard.

The Motherboard Express, V2M-P1, HBI directory contains:

  • A single board.txt file that contains information specific to the motherboard variant.

  • An IMAGE subdirectory containing bitmap (.bmp) and audio files (.wav) that you can use through the slide show application and POST Screen.

  • Image files for the FPGAs, PLDs, and microcontrollers present on the Motherboard Express, V2M-P1. These have .bit, .ebf, or .svf extensions.

  • A tapid.arm file that list the TAP controller register lengths. This is used for configuring JTAG devices.

The custom motherboard HBI directory contains:

  • A single board.txt file that contains information specific to the motherboard variant.

  • Image files for the microcontroller present on the motherboard. These have .ebf extensions.

  • A tapid.arm file that list the TAP controller register lengths. This is used for configuring JTAG devices.

Example 5.4 shows a typical Motherboard Express board.txt file.

BOARD: HBI0190
TITLE: MotherBoard Configuration File

[MCCS]
MBBIOS: mbb_v217.ebf            ;MB BIOS IMAGE

[FPGAS]
MBIOFPGA: io_b105.bit           ;REQUIRED TO ALLOW UPDATE FROM VECD v1.x
MBIOFPGA1: io_b105.bit          ;MB LEGACY IOFPGA IMAGE FOR SITE 1 BOOT MASTER
MBIOFPGA2: io_b205.bit	          ;MB LEGACY IOFPGA IMAGE FOR SITE 2 BOOT MASTER
MBIOFPGA3: io_b111.bit          ;MB A SERIES IOFPGA IMAGE FOR SITE 1 BOOT MASTER
MBIOFPGA4: io_b211.bit          ;MB A SERIES IOFPGA IMAGE FOR SITE 2 BOOT MASTER
MBMUXFPGA: mux_b1c.bit          ;MB MUXFPGA IMAGE

[OSCCLKS]
TOTALOSCCLKS: 6
OSC0: 50.0                      ;OSC0 MB SMB clock in MHz
OSC1: 23.75                     ;OSC1 MB CLCD clock in MHz
OSC2: 24.0                      ;OSC2 IOFPGA REFCLK in MHz
OSC3: 24.0                      ;OSC3 Reserved
OSC4: 24.0                      ;OSC4 SB_GCLK in MHz
OSC5: 24.0                      ;OSC5 Reserved

Example 5.5 shows a typical custom motherboard board.txt file.

BOARD: HBI0226
TITLE: V2M-DA1 MotherBoard Configuration File

[MCCS]
MBBIOS: mbb_v217.ebf              ;MB BIOS IMAGE

[FPGAS]

[OSCCLKS]
TOTALOSCCLKS: 0

MCCS section

The MCCS section lists each MCC on the motherboard and the image to load. These are the motherboard configuration controllers.

FPGAS section

The FPGAS section lists the FPGAs on the motherboard and the images to load. These are the IO FPGA and DVI multiplexer MUX FPGA.

Note

The custom motherboard does not use this section.

OSCCLKS section

The OSCCLKS section lists the number of programmable clocks and the frequency for each. See the Motherboard Express μATX Technical Reference Manual.

Note

The custom motherboard does not use this section.

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