EI data,  7-2 sequence of events, 7-34 EIA RS-232, 7-24 EIE,  7-33 EIR,  7-33 Electromagnetic interference, 1-14 Electronics, integrated drive, 7-27 Enables, sequence, 5-5 Encoding, 13-3 End-around-test (EAT), 13-39 Enhanced small device interface (ESDI), 7-27 Environmental inventory, 5-18 Equipment data communications, 7-1, 7-28 data terminal, 7-1, 7-28 Error bit detection/correction, 6-8 ESA,  7-11 Escape codes, printer, 12-3 ESDI, 7-28 ESI, 7-11 Ethernet DIX (IEEE 802.3), 7-25 E v e n t s external function sequence (normal), 7-34 external interrupt sequence, 7-34 input data sequence, 7-32 output data sequence, 7-34 single-cable sequence, 7-32 two-cable sequence, 7-33 Exchanges asynchronous data, 7-28 synchronous data, 7-28 Executive state, 5-10 instructions, 5-10 Extended operand addressing, 8-11 Extension interface, requestor, 5-25 External connectors,   2-21 controls, 1-10 single-cable equipment, 7-32 two-cable equipment, 7-33 External function data, 7-2 request/acknowledge, 7-33 sequence of events (normal), 7-34 External interrupt data,  7-2 requestionable, 7-33 sequence of events, 7-34 words, 7-9 Externally specified address/index (ESI) operating mode, 7-11 E Fault detection, memory, 6-7 Fetch (read) the instruction, 5-9 Fiber optic cables, 2-25 File allocation table, 10-6 Film mated, 6-17 memory,  6-13 Filter, power supply, 4-26 Filters, 2-12 5.25-inch floppy disk, 10-7 densities and coercivities, 10-10 Fixed disk care and handling, 10-30 Fixed disk interfaces, 10-27 Enhanced Integrated Drive Electronics Interface (EIDE), 10-28 Enhanced Small Device Interface (ESDI), 10-27 Integrated Drive Electronics (IDE) Interface, 10-27 Small Computer Systems Interface (SCSI), 10-28 ST-506/412 Interface, 10-27 Fixed hard disk systems, 10-23 Fixed-point operations, 5-20 Flag, set/clear, 7-14 Flat cables, 2-24 Flip-flops, 4-10 Floating-point operations, 5-20 Floppy disk drives, 10-8 configuration,   10-11 installation,  10-11 Floppy disks, 10-6 care and handling, 10-12 5.25-inch, 10-7 3.5-inch,  10-8 Format instructions, 8-7 interfacing, 7-21 parallel, 7-9 serial,  7-9 Formatting disk,  10-4 disk pack, 10-22 INDEX-5