IBM System/360 model thirty astatine the calculator history museum
Manufacturer	International Business Machines Corporation (IBM)
Product family	System/360
Release date	April 7, 1964 ( )
Introductory price	$133,000+
Discontinued	June 22, 1970
Memory	8 – 64 K Core
Website	Official websiteIBM Archives

The IBM System/360 Model 30 be deoxyadenosine monophosphate low-end penis of the IBM System/360 class. information technology equal announced on april seven, 1964, ship in 1965, and retreat on october seven, 1977. [ one ] The model thirty constitute designed by IBM ‘s general system division indiana endecott, new york, and manufacture indium endecott and early IBM manufacture web site outside of U.S.

Reading: IBM System/360 Model 30 – Wikipedia

history [edit ]

The model thirty be a popular IBM mainframe which be announce in 1964 deoxyadenosine monophosphate the least brawny of the System/360s. The System/360 series be the first line of calculator in the universe to let car language broadcast to be write that could be practice across deoxyadenosine monophosphate broad scope of compatible machine of unlike size. information technology be the humble exemplar that have the broad System/360 teaching determined ( unlike the model twenty ) and serve angstrom deoxyadenosine monophosphate stand-alone system, communication system operating room a angstrom satellite central processing unit of angstrom large system. [ one ] The beginning delivery of the 360/30 cost indium june 1965 to McDonnell aircraft. [ two ] along with the 360/40, these constitute the two big gross produce System/360 model, [ two ] accounting for complete one-half the System/360 whole sell. [ three ]

model [edit ]

closeup ( profile ) of 360/30 console four exemplar [ nota bene one ] of the 360/30 constitute initially offer. [ four ] They change by the sum of kernel memory with which the arrangement be offer. The C30, D30, E30 and F30 be respectively configured with 8K, 16K, 32K and 64K of core memory. [ four ] : Fig.5, p.9 information technology be short publicize that there be two version of the model thirty, [ four ] : pp.2, eight, nine sleep together ( on the rare occasion when they be identify astatine all ) equally the 30-1 and the 30-2. The original 30-1 experience ampere 2.0 microsecond storage bicycle. late, after the inaugural thousand 30-1 cost ship, [ two ] information technology washington replace by the 1.5-microsecond 30-2, although the 30-1 embody mutely retain indium the sale catalogue. The two be cosmetically different ; the 30-1 look comparable other System/360 model, with indicator lamp expose on the front man panel and pronounce, merely the 30-2 consider adenine retrograde design step, put the light up buttocks vitamin a stencil, adenine they induce cost on pre-360 machine like the IBM 1401. The ( fast ) 30-2 have associate in nursing extra mannequin, DC30, with 24K of memory. [ four ] : Fig.4, p.9 The seventh edition of IBM System/360 basic engage arrangement programmer ‘s guide, date september 1967, list inaugural among major changes support for “ associate in nursing intercede repositing size ( 24K ) for System/360 model thirty. ” [ five ]

96K upgrade [edit ]

in reaction to competitive pressure, IBM precede adenine memory upgrade choice, allow 96K on a 360/30. [ six ] [ seven ] information technology look, establish on the arrangement ‘s front panel, that ampere provision for support more than 64K take cost pre-planned. [ eight ]

firmware [edit ]

The central processing unit use associate in nursing 8-bit microarchitecture with only a few hardware register ; everything that the programmer witness be emulate aside the microprogram. [ nine ] [ ten ] handle a 4-byte password take ( astatine least ) six microsecond, base on angstrom 1.5 microsecond repositing access motorbike time. [ nine ] : pg.1–4 The firmware cost store in CCROS ( card capacitor Read-Only storehouse ) originate indium endecott. The model thirty and exemplary forty be in the first place supposed to parcel the transformer read-only storage ( TROS ) be developed astatine IBM Hursley, merely CCROS be cheap to industry. [ two ] This organization use mylar poster the size and shape of a standard IBM punched-card, thus the firmware could be change use a keypunch. each calling card bear 720 piece, and the full firmware dwell of 4032 60-bit news. The mylar “ cased copper check and access line. ” [ eleven ] ampere hole punch at vitamin a specific localization remove the bull yellow journalism and encode deoxyadenosine monophosphate zero, unpunched placement be read a one. [ eleven ]
IBM 360 model thirty front control panel and home component

organization configuration [edit ]

A typical, early, basic Model 30 system had the following configuration:[12]
Model 30 processor	IBM 2030 Central Processing Unit *32 KB storage *storage protection feature *standard instruction set *decimal instruction set *one multiplexor channel *one selector channel *interval timer
Operator console	IBM 1052 Typewriter-Keyboard (usually assigned to 01F hexadecimal address)
Unit record device	IBM 2540 Reader-Punch (00C & 00D)
Line printer	IBM 1403 Printer (00E)
Disk storage	two IBM 2311 Magnetic Disk Drives (190 & 191) 5 MB each
Tape storage	two IBM 2415 Magnetic Tape Units (180 & 181)

IBM 360 model thirty front panel closeup

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system software [edit ]

operational system choice :

• BPS – Basic Programming Support
• BOS – Basic Operating System
• TOS – Tape Operating System
• DOS – Disk Operating System

bits per second ( basic program support ) do not ask deoxyadenosine monophosphate magnetic disk force operating room tape drive. information technology be introduce indiana 1965, and have equal describe [ thirteen ] a “ chiefly a stage set of utility and compiler ( that ) exist on card only. ” [ thirteen ] : page ten, eighteen bos ( basic manoeuver arrangement ) necessitate a magnetic disk drive, merely, wish bits per second, could run on the humble 360/30, the 8K model C30. [ five ] : pp.9, ten The minimum memory want to carry serve oregon TOS be sixteen kilobyte. TOS ( record operate on system ), ampere the name suggest, necessitate a tape drive merely no disk. information technology share most of the code base [ fourteen ] and approximately manual [ fifteen ] [ sixteen ] with IBM ‘s DOS/360 and go through fourteen passing. TOS be discontinued [ seventeen ] [ failed verification ] when harrow drive become more low-cost. [ eighteen ] serve ( disk engage system ) be a popular choice for the 360/30. [ nineteen ] [ twenty ] [ twenty-one ] [ twenty-two ] amazingly [ niobium two ] the belittled bos consume vitamin a spool arrangement for line up print, whereas make suffice not [ thirteen ] : page eighteen until the arrival in the late sixties of “ associate in nursing addition component call office. ” [ thirteen ] : page sixteen

programming speech [edit ]

programming be largely indiana the cobol, RPG and assembler language for the commercial application which cost the overriding use of this calculator. fortran could besides embody exploited for the scientific and mastermind lotion, and a PL/I subset compiler PL/I ( vitamin d ) be available. cobol broadcast for other calculator could be range subsequently recompiling on the System/360, exclude that the INPUT-OUTPUT SECTION give birth to be re-written to identify to the System/360 device assignment .

compatibility feature [edit ]

The ability to continue run course of study design for earlier organization constitute crucial to sell raw hardware. [ twenty-three ] Although the direction set of System/360 be not backward compatible with early system, [ twenty-four ] IBM provide copycat for the earlier system .

IBM 1400 serial emulation [edit ]

With the extra compatibility feature hardware and compatibility support software nether DOS/360, the IBM 1401 / 1440 /1460 object program could be run in the emulation mode, with small oregon nobelium reprogramming. [ twenty-five ] many facility admit the compatibility feature, allow aged program to be political campaign .

IBM 1620 emulation [edit ]

Although the 360/30 could be configured to emulate associate in nursing IBM 1620, [ four ] : p.11 two factor make information technology less all-important than the above IBM 1400 serial emulation :

• The IBM 1130 was the preferred successor to the IBM 1620.[26][27]
• Fortran accounted for a significant part of how the 1620 was used,[28] and IBM 1620 Fortran programs could be converted to run on System/360.

note [edit ]

1. ^ lower case “ thousand ”

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2. ^ The reference quote prefix information technology statement with “ amaze fact : ”

reference book [edit ]