Laptop User Manual
Introduction
MVME166IG/D2 1-5
1
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 
❏ VSB Specification (IEEE 1096-1988) 
Features
Features of the MVME166 are listed below. 
❏ MC68040 Microprocessor 
❏ 4/8/16/32/64/128/256MB of 32-bit DRAM with ECC protection 
❏ 1 MB of Flash memory and a download EPROM 
❏ 128KB SRAM (with battery backup) 
❏ Status LEDs for FAIL, STAT, RUN, SCON, LAN, RPWR, SCSI, VME, TPWR and VSB 
❏ 8K by 8 RAM and time of day clock with battery backup 
❏ RESET and ABORT switches 
❏ Four 32-bit tick timers for periodic interrupts 
❏ Watchdog timer 
❏ Eight software interrupts 
❏ I/O 
– SCSI Bus interface with DMA 
– Four serial ports with TTL buffers 
– Centronics printer port 
– Ethernet transceiver interface with DMA 
❏ VMEbus interface 
– VMEbus system controller functions 
– VMEbus to local bus interface (A24/A32, 
D8/D16/D32 (D8/D16/D32/D64BLT) (BLT = Block Transfer)) 
– Local bus to VMEbus interface (A16/A24/A32, D8/D16/D32) 
–VMEbus interrupter 
– VMEbus interrupt handler 
– Global CSR for interprocessor communications 
– DMA for fast local memory - VMEbus transfers (A16/A24/A32, 
D16/D32 (D16/D32/D64BLT)) 
❏ VSB interface 
– Local bus to VSB interface (A16/A24/A32, D8/D16/D32) 
– VSB to local bus interface (A16/A24/A32, D8/D16/D32) 
– Control and Status Register sets (Board CSRs accessible from both 
local bus and VSB; local CSRs accessible from local bus) 
(Includes Global CSR for IPC (General Purpose Registers 1 and 2)) 
– Local bus interrupter 
– VSB interrupter and VSB interrupt handler 
– Bidirectional write posting - local bus to VSB and VSB to local bus 
– EVSB compatible 










