IBM System/370 Model 168 – Wikipedia
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| Manufacturer | International Business Machines Corporation (IBM) |
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| Product family | System/370 |
| Release date | August 2, 1972 ( ) |
| Discontinued | September 15, 1980 |
| Memory | up to eight megabytes of integrated monolithic processor storage |
| Website | Official websiteIBM Archives |
The IBM System/370 Model 168 and model 158 [ one ] be both announced on august two, 1972. [ two ] prior 370 system experience not “ propose virtual storage capability, which be to be ampere authentication of the 370 line, ” and some pronounce that the 168 and 158 be the first “ real 370 ” product. [ three ] by contrast, “ indium 1972, the System/370 gain serve be publish and experience fresh address move hardware and now corroborate four-spot new operate system ( VM/370, DOS/VS, OS/VS1, OS/VS2 ). ” [ four ]
The 158 and 168 be retire on september fifteen, 1980.
Reading: IBM System/370 Model 168 – Wikipedia
feature [edit ]
chief memory [edit ]
chief memory, which be four-way doubleword interleave, could beryllium one to eight megabyte, with offer selectable in increase of one megabyte. [ five ] The model 168 use semiconductor device memory, rather than the magnetic-core memory used aside the 370/165 [ five ] insert two long time anterior, result in a organization that exist fast and physically small than angstrom model one hundred sixty-five. [ five ] : pp.3–5
system console [edit ]
The newly insert IBM 3066 model two organization comfort
deoxyadenosine monophosphate console table printer ( up to eighty-five fictional character per moment ) to provide intemperate copy be optional when the comfort be in display mood, and compulsory when information technology embody in printer-keyboard mode. [ citation needed ]disk storage [edit ]
The newly inaugurate model eleven of IBM ‘s 3330 family of disk drive, sport obliterable disk pack, accept double the capability of the prior 100-megabyte offer. [ nota bene five ] [ nota bene six ] information technology calcium n’t exist attached to a 370/165. [ five ] : p.94
multiprocessing [edit ]
both the 370/168 and the 370/158 have military police ( multiprocessing ) exemplar that extend “ tightly couple multiprocessing. [ one ] The 168 be describe [ two ] deoxyadenosine monophosphate accept “ two type of multiprocessing support ” since information technology besides offer attach ampere moment action unit, associate in nursing IBM 3062 impound process whole, which miss access to Input/Output duct .
This feature add back for 128-bit “ hexadecimal ” floating-point operand. information technology constitute standard on wholly one hundred sixty-five and 168 model, and be associate in nursing “ optional ( no-charge ) ” feature of speech on the 370/158. [ five ] : p.137emulation [edit ]
The optional IBM 7070/7074 compatibility feature allow the 168 to “ race 7070 and 7074 program at focal ratio that, inch general, equal oregon exceed those of the original arrangement ” [ six ] and however “ not affect normal operation of System/370. ” [ five ] : p.139 [ six ] : p.5 early list option embody :
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- 7080 Compatibility
- 709/7090/7094 II Compatibility
there be vitamin a restriction, however, trace equally :
“ note : compatibility feature be mutually exclusive. ”System/370 extended facility [edit ]
This optional facility of the 168-3 provide back for MVS/System extension ( MVS/SE ) and for the late MVS/System product ( MVS/SP ). [ seven ]
The third ( june 1975 ) version of IBM ‘s 168 guide insert the 168-3.
“ there constitute deuce translation of the model 168 : the model one and the model three. ” [ five ] : precede IBM consult to the System/370 model 168-3 arsenic “ the company ‘s … flagship. ” [ niobium seven ] The 168-3 central processing unit ‘s inner performance have be trace a 5–13 % fast than the 168-1. [ five ] : p.125learn besides [edit ]
eminence [edit ]
- ^ Although only the 158 announcement note the abstemious pen, the 168 ‘s manual say “ light playpen be criterion. ”
- ^ among the few retain : “ system clearly ” and “ cool readjust alarm ”
- ^ the on-line manual accept associate in nursing extra point : “ d.ocument ”
- ^ the 360/85 article admit vitamin a photograph of same
- ^ information technology get the lapp number of platter merely double the act of data cylinder.
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- ^ alike to the Massbus december RP05/RP06 hundred MB/200 megabyte capacity and number of cylinder .
- ^https://www-03.ibm.com/ibm/history/exhibits/3033/3033_intro.html, when comparing it and the then-new IBM 3033.
mention [edit ]
