RELIANCE 45C362 Pulse interface card

Default address is $FFFFD20F. This is the MVME172LX GCSR GPCSR0 as accessed through VMEbus A16 space; it assumes the MVME172LX GRPAD (group address) and BDAD (board address within group) switches are set to "on". This byte-wide value is initialized to $FF by MVME172LX hardware after a System or Power-On reset. In a multi172 environment, where the work pages of several Bugs reside in the memory of the primary (first) MVME172, the non-primary CPUs will wait for the data at the Memory Search Delay Address to be set to $00, $01, or $02 (refer to the Memory Requirements section in Chapter 3 for the definition of these values) before attempting to locate their work page in the memory of the primary CPU.

Memory Configuration Defaults. 

The default configuration for Dynamic RAM mezzanine boards will position the mezzanine with the largest memory size to start at the address selected with the ENV parameter "Base Address of Dynamic Memory". The Base Address parameter defaults to 0. The smaller sized mezzanine will follow immediately above the larger in the memory map. If mezzanines of the same size and type are present, the first (closest to the board) is mapped to the selected base address. If mezzanines of the same size but different type (parity and ECC) are present, the parity type will be mapped to the selected base address and the ECC type mezzanine will follow. The SRAM does not default to a location in the memory map that is contiguous with Dynamic RAM.The size of the Parity type dynamic RAM mezzanine, if any. The default is the calculated size of the Dynamic memory mezzanine board.

ENV asks the following series of questions

 to set up the VMEbus interface for the MVME172 series modules. You should have a working knowledge of the VMEchip2 as given in the MVME172 VME Embedded Controller Programmer’s Reference Guide in order to perform this configuration. Also included in this series are questions for setting ROM and Flash access time. The slave address decoders are used to allow another VMEbus master to access a local resource of the MVME172LX. There are two slave address decoders set. They are set up as follows:This register allows the VMEbus address and the local address to differ. The value in this register is the base address of the local resource that is associated with the starting and ending address selection from the previous questions. Default is 0.

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