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CDC 7154
Controls up to 8 disk storage drives, connects to one standard 6000 I/O channel. Two mass storage controllers were required for dual access operation. Minimum configuration will have two disk storage units.
Controls up to 8 disk storage spindles (four drives) of the 885 disk unit. Two mass storage controllers were required for dual access operation. Minimum configuration will have two disk storage units.
We almost never removed any of these packs, even during "system time" (testing). Only for system maintenance and test time for system programmers, another disk set was mounted.
When a disk crash occured, spectacular noises arose from the spindle combined with brown 'smoke' (the magnetic layer).
Winchester disk unit containing
four independent spindles with non-removable head/ disk assemblies (hda).
Total capacity of 2.444 Mbyte (8 bits). Burst transfer rate 24 Mbps.
Positioning time is 16 ms average.
Tape deck: 25 ips start/stop mode; 75 ips streaming mode; 1600 and 6250 cpi; max. 468 kB/s transfer rate.
Single channel connection to one control. Permits read/write on any one of eight CDC Model 667 and 669 (intermixed) Tape Units. Contains a programmable processor. Will read/write 556/800 characters per inch NRZI recording and 1600 characters per inch Phase Encoded. Will read 200 characters per inch NRZI.
Controlware had to be loaded first (cold start) using the card reader and a deadstart panel program that dumped the card images directly into the tape controller.
9-track tape drive. 200 ips at 800,
1600 or 6250 chars/inch. The units were very fast, but initially
very sensitive to the correct adjustment of the loop colums
sensors. Each unit had a large size 'vacuum cleaner' motor
that delivered the pressure difference between the inside
and outside of the tape in the loop columns. This allowed fast
movement of the tape across the head while the reels could
start or stop much slower. The 67x-series units automatically
loaded and threaded the tape
after pushing the Close Window and Start buttons. It automatically
opened the
tape enclosure.Read 1200 cards/minute for 80 column cards, read 1600 cards/minute for 51 column cards (after flipping an end stop). 4000 card hopper capacity, 4000 card stacker capacity, 240 card secondary stacking capacity for limited sorting or projecting.
The flat bed hopper and stacker allowed a large number of cards to be fed in a continuous stream. It was fabulous to see the cards fast turn around the array of light detectors in front of the projector lamp and the optics.
Special punched tape was required to signal "channel" jump, e.g. channel 1 jump was top-of-page (ref. Fortran first character output codes). Reasonably good quality output.
Chain-style line printer, attached to
mainframe channel. 800 lines/minute with 48 character train, 136 columns with
6 or 8 lines per inch spacing. Paper advance single line 11 ms (6 lpi) or 10 ms (8 lpi).
Included a powered stacker, train image storage. Skip rate: 70 inch/sec.
Required a train cartridge, either 64 character set or 94 character ASCII set.Used constantly. Reasonably good quality output.
Band-style line printer,
attached to a CDCnet device interface. In our case to the MDI using a Centronics
interface.
2000 lines/minute, 136 columns with
6 or 8 lines per inch spacing.
This was shorthand for a 16-port communications multiplexor. Used for remote batch stations, known as EI200 (Export/Import) stations and a limited number of asynchronous lines (110-600 bd).
The 6671 was driven by a spaghetti PP program 1MR. For systems programmers the ultimate "man or boy" test.
CDC's hardware description: "Entry level communication processor with limited line termination capacity for computer front end or remote processor applications. Includes 32k words of 16 bit MOS memory (expandable to 128k words), cabinet, loop multiplexer and capacity to house up to 16 cla's (not included), power supply, maintenance panel, cassette tape controller, cassette tape drive and cyclic redundancy check sum module. Required console, plus channel coupler (2558-3 or 2558-4 or 10344-1) for front-end applications or autostart module cassette (2580-4) for remote applications."
Each 2560-1 CLA provided two modem connections to EIA RS232C lines at speeds up to 9,600 bits per second. The 2561-1 provided connection to EIA RS232C or CCITT V.24 interface standards.
- MDI: the mainframe device interface
- NDI: the network device interface delivering gateway services, e.g. the TCP/IP to/from (native) XNS and (later) OSI conversion services.
- TDI: terminal device interface, having a number of line interface modules (LIMs) to hook up asynchronous, synchronous and unit-record-equipment (URI) lines.
Includes 8 lines of 80 characters displayed on a 10-inch wide by 8-inch high viewing area of a 15-inch (diagonal) CRT screen, electronic keyboard with standard teletype layout including additional controls plus 10 key including additional controls plus 10 key numeric cluster, 96 ASCII alphanumerics and symbols plus 32 ANSI control codes. RS232-C interface designed for asynchronous data transmission at 7S, 110, 150 and 300 BPS. Features include cursor control- up, down, right, left, home, start, stop, inverse video (black on white), roll or page format, non-destructive blinking cursor (!), 5 x 9 dot matrix using standard 525 line tv raster, 60 hz refresh rate, MOS semi-conductor memory, tri-level Keyboard, character size (nominal) 25 inch high, 125 inch wide, provision for hardcopy, switch selection - full or half duplex, odd, even, or no parity; keyboard lockout, remote-local (test) roll-page format.
Sixty-bit word size, 65,536 words of magnetic core storage 10 peripheral and control processors each with 4,096 12-bit words of independent magnetic core storage, twelve 12-bit ata channels, floating-point hardware, 8 operand, 8 addressing and 8 increment registers, central processor interrupt through exchange jump option, includes logic coupler for addition of extended core storage and required power and cooling equipment (water cooled). The 6612 desk console with dual crt, 10 x 10 inch display area, includes typewriter keyboard and associated controller.
Sixty bit word size, one multi-function central processor with 131,072 words
of central memory, 10 peripheral and control processors each with 4,096 12-bit words of
independent magnetic core storage, twelve 12-bit data channels. Floating-point hardware,
8 operand, 8 addressing and 8 increment registers, central processor interrupt
through exchange jump logic, includes two adapters for 3000 series data
channels, system console, 64-bit interlock register and required
power and cooling equipment (water cooled).
CDC CYBER 180-835 CENTRAL COMPUTER.Sixty bit word size, 524,288 (up to 2M) words of semi-conductor storage with error correction code. Ten (fifteen or twenty) peripheral processors, each with 4096 12-bit (plus one parity bit) words of storage. Processor includes 2048 words of cache memory, floating point hardware, eight addressing, eight operand and eight increment registers. Central processor interrupt through exchange jump. Twelve (or 24) 12-bit (plus one parity bit) data channels. Includes system console and required cooling equipment; chilled water required. Included a 18001-1 data channel converter (conversion 170 channel to 3000 channel). Includes dual-state mode. 250 microsecond minor cycle.
CDC CYBER 840A CENTRAL COMPUTER.Single processor, cache of 2048 words; 16 Mbyte memory (upto 128 Mbyte); 10-15 or 20 PPs, 12 or 24 Cyber 170 I/O channels.
CDC CYBER 930-11 CENTRAL COMPUTER.Single processor, 64 bits, virtual state only, 40 registers, 32 MB (could be 64 MB), 80 MB/sec memory transfer rate, PPs 16Kword 16 bits, 5 or 10 I/O processors, 3 (6) ICI and 3 (6) IPI channels
ETA10-P CENTRAL COMPUTER.Single, pipelined CPU chip with 400 connects on a 44 layer CPU board with 20,000 1.5 mil drill holes; clock speed 24 nanosec. Peak: 146 MFlops. CPU memory: 4 Mwords* 64 bits shared memory. This memory interacted with the main or common memory of 8 MWords* 64 bits.
