KONGSBERG SPBUS-HUB Excitation module

The following table shows the on-board interrupt sources and levels defined by VMEPROM. All interrupt levels and vectors of the on-board I/O devices are software programmable via the FGA-002 gate array.

During the power-up sequence the on-board real-time clock of the CPU board is read and the current time is loaded into VMEPROM. This sequence is done automatically and requires no user intervention. If the software clock of VMEPROM is set by the ID command, the RTC is automatically set to the new time and date values.

VMEPROM Commands 

The VMEPROM commands are resident and available at any time. Common commands Most of the commands are common for all versions of VMEPROM. For a description of all common VMEPROM commands and for an in depth description of VMEPROM itself refer to the VMEPROM Version 2/32 User’s Manual. CPU board specific commands VMEPROM commands which are specific for the hardware of the CPU board are described in this section. Quick overview The HELP command provides a short description of all available VMEPROM commands. • Enter HELP for a description of all commands. • Enter HELP command for a description of the command command..

ARB - Set the Arbiter of the CPU Board 

Format ARB The ARB command allows the user to set the arbitration modes and the release modes of the CPU board for the APNbus. Additionally, the APNbus interrupts can be enabled or disabled The FERASE command allows erasing flash memory banks. • Format 1 of the command erases the whole flash memory bank. • Format 2 allows specifying a region to erase. Note: This region must exactly match the page boundaries of the flash devices. Example: If the SYS_FLASH bank consists of four 28F008 (1M * 8 bit) devices in parallel with a page size of 74 KByte each, the minimum size of one erasable region is 256 KByte (64 KB * 4 devices).

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