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247:(APU) running at 24 MHz. The specification as announced in 1984 featured 256 KB of RAM and a 10 MB hard drive, but subsequently settled on 512 KB of RAM and a 20 MB hard drive as the minimum configuration, with 40 MB and 67 MB hard drives offered as options. A minimum configuration system had been expected to provide only 128 KB of RAM and a 320 KB floppy drive, selling for under $ 1,000.
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plant, with availability in the United States announced for the third quarter of the same year, and with pricing starting from approximately $ 2,700. The machine was publicly demonstrated for the first time outside the US at the 1985
318:. Some observers found the choice of an earlier form of Unix "surprising" given the availability of more recent versions and of Zilog's commitment among other manufacturers to promote System V as the industry standard for Unix.
764:
Coherent appears to be nearly a clone of UNIX Version 7, an older release of UNIX that has since been replaced by System III and System V. I write "appears to be" because the
Coherent manual doesn't say it is based on
216:
to adopt the Z8000 family of processors for its next generation of computers, conferring rights to
Commodore to manufacture these processors and for Zilog to manufacture various Commodore-designed
205:
families of personal computers that had found success in Europe as business machines. The project was initiated in 1983 by
Commodore systems engineers Frank W. Hughes, Robert Russell, and
243:. Initial announcements indicated the use of a 10 MHz Z8001 processor, but earlier technical documentation suggested the use of a 6 MHz part and detailed the option of a Z8070
342:, with interest in the product described as "overwhelming". Ultimately, only fifty prototypes were made and sold as development systems before the project was cancelled.
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colour graphical display. The high-resolution display option employed 128 KB of dedicated video memory and featured hardware support for
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operation. Commodore had reportedly been developing its own 16-bit microprocessor, abandoning this effort to adopt the Z8000.
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products. Zilog was to manufacture components for
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272:. For the text-only configuration and for lower-resolution graphical output, the system employed the
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438:"Commodore 900: The Unix-like workstation/server that was eclipsed by Amiga – VintageComputer.ca"
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Commodore 900: The Unix-like workstation/server that was eclipsed by Amiga
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operations, this being employed by a graphical environment featuring "
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402:. Vol. 6, no. 37. Contemporary Marketing, Inc. p. 10.
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877:
Commodore
Microcomputer magazine coverage of the 900's announcement
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490:"Commodore Info Page - Brochures: Commodore 900 [en]"
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849:– By Cameron Kaiser and The Commodore Knowledge Base
546:
On the Edge: The
Spectacular Rise and Fall of Commodore
329:
Manufacturing of the system was to commence in 1985 at
306:, claimed in publicity as being "fully compatible with
847:
C900 page at 'The Secret
Weapons of Commodore' website
396:"Commodore Announces Unix®-Compatible Business System"
873:
and several of the ROMs have been reverse-engineered.
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In early 1983, Commodore announced an agreement with
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735:. International Data Group. 6 May 1985. p. 57.
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824:. Vol. 3, no. 2. Fall 1985. p. 10
616:
614:
236:computer based on the segmented version of the
622:"Commodore 900 Computer : This is Z Page"
250:Two versions of the machine were developed: a
902:
566:"Commodore to Use Z8000 Family in Its Micros"
8:
1420:† Listed in chronological order by category
458:
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1055:
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895:
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702:"Secret Weapons of Commodore: The CBM 900"
18:
795:C5002A, C8002A Series Product Description
861:– color photos of a prototype unit
782:. Onyx Systems Incorporated. p. 8.
729:"Commodore high-performance micros out"
375:
276:video controller, this supporting an
7:
1434:
865:Commodore C900 product announcement
746:Rochkind, Marc J. (November 1985).
518:. Cahners Publishing Company. 1985.
593:"16-Bit Version of 6502 Announced"
345:The C900's case is similar to the
14:
869:A running CBM900 has survived at
798:. Onyx Systems Inc. February 1983
1464:
1463:
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1444:
1443:
1433:
1424:
1423:
394:LeBold, Diane (September 1985).
818:"Commodore at the Hanover Fair"
197:. It was to replace the aging
1:
1041:Commodore Semiconductor Group
572:. 24 January 1983. p. 77
190:and, later, as an affordable
531:Predicasts Technology Update
466:Commodore c900 Hardware Spec
290:multiple overlapping windows
280:colour textual display or a
1031:Commodore Business Machines
680:Computers & Electronics
597:Computers & Electronics
548:, Variant Press. Page 434.
463:Frank Hughes (1985-03-01).
1516:
779:Onyx C8002 Computer System
748:"Pick, Coherent and THEOS"
265:for a number of connected
245:arithmetic processing unit
1418:
1007:
674:Libes, Sol (March 1983).
591:Libes, Sol (March 1983).
76:1.2 MB 5.25" floppy disks
1459:Storage devices template
1323:Commodore 64 peripherals
941:(founder/CEO, 1958–1984)
655:. May 1984. pp. 4–5
400:Commodore Microcomputers
349:'s but slightly larger.
186:originally intended for
1449:Amiga hardware template
1374:List of cancelled games
918:Commodore International
855:– By Bo Zimmerman
822:Commodore International
544:Bagnall, Brian (2006).
331:Commodore International
30:C900, Z-8000, Z-Machine
16:Prototype microcomputer
494:www.commodore-info.com
68:Fifty prototypes built
1495:Computer workstations
676:"Rumors & Gossip"
326:for their computers.
1279:Cancelled prototypes
1490:Commodore computers
534:. Predicasts. 1985.
440:. 21 September 2019
274:MOS Technology 8563
167:(also known as the
138:MOS Technology 8563
21:
1469:MOS chips template
932:Board of directors
859:The Commodore C900
754:. pp. 231–239
515:Mini-micro Systems
218:integrated circuit
188:business computing
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1333:Super Expander 64
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1232:IBM PC compatible
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987:Carl Sassenrath
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653:Commodore User
649:"Hanover 1984"
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207:Shiraz Shivji
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33:
29:
26:Also known as
23:
20:Commodore 900
1296:Commodore 65
1290:
1122:Commodore 16
1102:Commodore 64
1019:Subsidiaries
982:Chuck Peddle
945:Irving Gould
939:Jack Tramiel
826:. Retrieved
821:
812:
800:. Retrieved
794:
788:
778:
772:
763:
756:. Retrieved
751:
741:
732:
709:. Retrieved
705:
696:
684:. Retrieved
682:. p. 32
679:
669:
657:. Retrieved
652:
629:. Retrieved
625:
601:. Retrieved
599:. p. 32
596:
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574:. Retrieved
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497:. Retrieved
493:
465:
442:. Retrieved
432:
421:. Retrieved
399:
364:Amiga 3000UX
344:
340:Hanover Fair
335:West Germany
328:
320:Onyx Systems
294:
249:
231:
211:
176:
172:
168:
164:
162:
45:Manufacturer
1400:Amiga, Inc.
1117:Educator 64
1097:MAX Machine
977:Dave Needle
962:Dave Haynie
828:25 February
758:28 February
659:28 February
252:workstation
238:Zilog Z8000
195:workstation
152:Predecessor
99:Zilog Z8001
1500:Prototypes
1484:Categories
1379:Magic Desk
1354:Amiga Unix
1318:1351 mouse
1052:Computers†
711:2022-12-14
631:2022-12-14
499:2022-12-14
444:2022-12-14
423:2020-10-16
370:References
359:Amiga Unix
347:Amiga 2000
256:1024 × 800
972:Jay Miner
955:Engineers
418:0744-8724
301:UNIX-like
282:600 × 400
270:terminals
181:prototype
177:Z-Machine
49:Commodore
39:Commodore
35:Developer
1429:Category
1410:Escom AG
1393:See also
1342:Software
1311:hardware
1202:500 Plus
967:Bil Herd
686:10 March
603:10 March
576:10 March
353:See also
308:AT&T
297:Coherent
286:blitting
179:) was a
134:Graphics
129:1024×800
101:@ 10 MHz
87:Coherent
1439:Commons
1349:AmigaOS
802:3 March
278:80 × 25
126:Display
118:Storage
59:Desktop
1369:KERNAL
1191:3000UX
1127:Plus/4
1081:VIC-20
1076:CBM-II
925:People
552:
416:
406:
263:server
234:16-bit
228:Design
175:, and
173:Z-8000
106:Memory
1309:Other
1222:4000T
1196:3000T
1142:Amiga
1112:SX-64
1107:C64GS
1066:KIM-1
1059:Early
765:UNIX.
259:pixel
254:with
214:Zilog
144:Sound
73:Media
1270:PC60
1265:PC50
1260:PC40
1255:PC30
1250:PC20
1245:PC10
1217:4000
1212:1200
1185:3000
1180:CD32
1175:CDTV
1170:1500
1165:2500
1160:2000
1150:1000
830:2024
804:2023
760:2023
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