GE VMIVME7740-841 Serial Link Controller

Special PCI BIOS functions provide a software interface to the Universe chip, providing the PCI-to-VMEbus interface. These PCI BIOS functions are invoked using a function and subfunction code. Users set up the host processor's registers for the function and subfunction desired and call the PCI BIOS software. The PCI BIOS function code is B1h. Status is returned using the Carry flag ([CF]) and registers specific to the subfunction invoked. Access to the PCI BIOS special functions for 16-bit callers is provided through interrupt 1Ah. Thirty-two bit (i.e., protect mode) access is provided by calling through a 32-bit protect mode entry point.

Calling Conventions 

The PCI BIOS functions preserve all registers and flags except those used for return parameters. The Carry Flag [CF] will be altered as shown to indicate completion status. The calling routine will be returned to with the interrupt flag unmodified and interrupts will not be enabled during function execution. These are re-entrant routines require 1024 bytes of stack space and the stack segment must be the same size (i.e., 16- or 32-bit) as the code segment. The PCI BIOS provides a 16-bit real and protect mode interface and a 32-bit protect mode interface.

The main brand

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BENTLY --- 3500 system/proximitor, front and rear cards, sensors, power modules, probes, cables

Emerson -- modbus card, power panel, controller, power supply, base, power module, switch

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FOXBORO - thermal resistance input/output module, power module, communication module, cable, controller, switch

GE --- module, air switch, I/O module, display, CPU module, power module, converter, CPU board, Ethernet module, integrated protection device, power module, gas turbine card

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Woodward - Regulator, module, controller, governor

YOKOGAWA - Servo module, control cabinet node unit

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