HIMA F3237 Digital servo system

Local peripheral bus to VMEbus transfers can be D8, D16, or D32. VMEchip2 DMA transfers to the VMEbus, however, can be 64 bits wide as Block Transfer (BLT). Requirements These boards are designed to conform to the requirements of the following documents: 

❏ VMEbus Specification (IEEE 1014-87) 

❏ EIA-232-D Serial Interface Specification, EIA 

❏ SCSI Specification, ANSI

These are some of the major features 

of the MVME197LE single board computer: ❏ MC88110 RISC Microprocessor 

❏ 32 or 64 megabytes of 64-bit Dynamic Random Access Memory (DRAM) with error correction 

❏ 1 megabyte of Flash memory 

❏ Six status LEDs (FAIL, RUN, SCON, LAN, SCSI, and VME) 

❏ 8 kilobytes of Static Random Access Memory (SRAM) and Time of Day (TOD) clock with Battery Backup RAM (BBRAM) 

❏ Two push-button switches (ABORT and RESET) 

❏ 128 kilobytes of BOOT ROM 

❏ Six 32-bit tick timers for periodic interrupts 

❏ Watchdog timer ❏ Eight software interrupts

SCSI Bus interface with Direct Memory Access (DMA)

 – Four serial ports with EIA-232-D buffers – Centronics printer port – Ethernet transceiver interface 

❏ VMEbus interface – VMEbus system controller functions – VMEbus interface to local peripheral bus (A24/A32, D8/D16/D32 BLT (D8/D16/D32/D64))(BLT = Block Transfer) – Local peripheral bus to VMEbus interface (A24/A32, D8/D16/D32 BLT (D16/D32/D64)) – VMEbus interrupter

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