WOODWARD 5466-353 Bus interface card

The MVME188A board set consists of a system controller board (utility 1/0 RISC module), one, two, three, or four memory boards, and a main logic board {CPU processor) with a HYPERmodule (CPU cluster mezzanine module), all electrically and mechanically connected and with three or more single-wide front panels. System Controller Board The system controller board contains a VMEbus A16 slave interface, ROM, static RAM, UARTs, and timing elements plus local and global control/status registers. Memory Board On the memory board, the DRAM memory complement communicates with the CMMU devices on the HYPERmodule mezzanine over the high speed local bus or slave bus (S bus), a modified form of the M bus, the CMMU memory bus. (Because the S bus is a modified form of the M bus, descriptions of registers and other circuits sometimes describe it as the M bus.) Memory capacity can be increased by adding one to three MVME288 series memory boards.

Main Logic Board with HYPERmodule Mezzanine Module 

Up to four clusters of MC88100 RISC Microprocessors closely coupled with MC88200 or MC88204 Cache/Memory Management Units are contained on a HYPERmodule mezzanine module plugged into the the main logic board. The main logic board contains a full 32-bit VMEbus interface, as well as address decode logic and S bus (MVME188A local Slave bus) interface logic.

Equipment Required 

The following equipment is required to make a complete system using the MVME188A: Terminal(s) Disk drives and controllers Chassis and power supply Optional transition module MVME714M and connecting cables Operating system The MVME188Bug debug monitor firmware {188Bug) is provided in the four EPROM sockets on the MVME188A system controller board. It provides over 50 debug, up/downline load, and disk bootstrap load commands, as well as a full set of onboard diagnostics and a one-line assembler/disassembler. 188Bug includes a user interface which accepts commands from the system console terminal. 188Bug can also operate in a System Mode, which includes choices from a service menu. Refer to the MVME188BUG Debugging Package User's Manual for details.

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