Knowledge (XXG)

THEOS

Source 📝

368:, but that meant then-new 16-bit systems performed nowhere near as well as their 8-bit counterparts). This situation led to Williams becoming dissatisfied with the Phase One company at the time, and forming his own company to market and support the 16-bit OASIS. The company was initially called Oasis Technologies, until Phase One took action to protect the name. Rather than fight a long and expensive court battle, the company and product was renamed "THEOS". 1844: 39: 1834: 348:. Timothy Williams developed OASIS and was employed at Phase One. The market asked for 16-bit systems but there was no real 16-bit multi-user OS for 16-bit systems. Every month Phase One announced OASIS-16 but it did not come. One day Timothy Williams claimed that he owned OASIS and started a court case against Phase One and claimed several million 417:
also lost patience with THEOS and Williams, and decided to make their own OASIS 16-bit version and hired Dr. Jeffrey Bahr. When Xenix and THEOS became available Seiko did decide to leave this market. Jeffrey Bahr started CET which went on with the development of the 16-bit OASIS compatible software.
359:
David Shirley presented an alternative history at the Computer Information Centre, an OASIS distributor for the UK in the early 1980s. He said Timothy Williams developed the OASIS operating system and contracted with Phase One Systems to market and sell the product. Development of the 16-bit product
468:
and other hardware manufacturers 30 years ago, and is distributed by a number of distributors in Great Britain, Spain, Portugal, Germany, Italy and more. The 'current' version is THEOS Corona Commercial Release 6, which was released in December 2008, and a number of updates have been released since
457:, since 1983. As of 2003, Phase One Systems publishes software development tools for THEOS(R) systems. As well as porting tools, Phase One Systems distributed the Freedom query package and Control database package for THEOS systems, used to bring 360:
was underway, but the product was prematurely announced by POS. This led to pressure to release OASIS early, when it was still not properly debugged or optimised. (OASIS 8-bit was quite well optimised by that point, with many parts
505:, allowing it to be more portable to other environments, though support has been primarily directed towards industry-standard hardware (i.e. PC's). THEOS is specifically aimed at small business users, with a wide range of 356:. The court case took two years and finally the ruling was that Timothy Williams was allowed to develop the 16-bit version of OASIS but he was not allowed to use the OASIS name anymore. 941: 747:". The magazine criticized the documentation's quality, and concluded that the price was too high compared to other multiuser operating systems for the PC such as 861: 1838: 934: 353: 421:
CET acquired the Phase one company. Also, Phase One Systems licenses a porting tool called CET Basic. CET Basic is compatible with THEOS BASIC,
1870: 808: 379:"). While Williams and Sidorsky where fighting in the court the manufacturers had no 16-bit multi-user OS. That led to the agreement between 874: 1848: 927: 1616: 783: 1651: 122: 531:
A number of security features exist, including dynamic passwords (where the password includes part of the date or time, or client
1428: 1875: 1605: 815:
Microsoft licensed Seventh Edition UNIX from AT&T in 1978 to produce the XENIX operating system initially for the PDP-11.
429:, and using W/32 BASIC, recompile your THEOS, OASIS, or UX-BASIC programs to work under additional operating systems such as 60: 1703: 1465: 1093: 841: 850:
In the late 1970s Microsoft licensed UNIX source code from AT&T, which at the time was not licensing the name UNIX.
418:
CET software was complete compatible with OASIS/THEOS and allowed these users to go into the Unix and Microsoft world.
1006: 800: 752: 172: 103: 1696: 950: 450: 75: 49: 1576: 1343: 1211: 1111: 502: 371:
Williams created a new company and product name: "THEOS" meaning "the OS" in the sense of "the one" ("Theos" is
1728: 1690: 1396: 764: 517: 506: 454: 338: 270: 211: 82: 1564: 1123: 1047: 477:
Originally written in the late 1970s by Timothy S. Williams as a low-cost alternative to the more expensive
302:
processor and was the first multi-user operating system for 8-bit microprocessor based computers (Z-80 from
1880: 1735: 1658: 56: 20: 1422: 1314: 827: 748: 89: 1827: 1622: 1238: 536: 408: 384: 349: 223: 564: 469:
that time. The current Windows Workstation Client (as of May 2009) is version 3.16 from July 2003.
295: 489:
facilities to allow several users to utilise the resources of one computer. Similar in concept to
71: 1724: 1220: 403:
microcomputer market. Because Microsoft was not able to license the "UNIX" name itself, called
1771: 1439: 804: 543:
connection. In addition, the object file format is proprietary, and the operating system uses
430: 365: 1523: 959: 422: 262: 251: 218: 197: 192: 1354: 1034: 735: 619: 552: 535:, or other dynamic elements), allow/deny security, a comprehensive inbound and outbound 1776: 1287: 1166: 1161: 650: 548: 521: 388: 372: 334: 1864: 1532: 1280: 1151: 919: 689: 627: 498: 407:. Microsoft would distribute the product via Larry Michels and his son Doug Michels ( 259: 1796: 1791: 1138: 1099: 478: 399:
in 1978, and announced on August 25, 1980, that it would make it available for the
96: 273:
in 1982, the decision was taken to change the name from OASIS to THEOS, short for
1819: 1781: 1676: 1546: 540: 426: 361: 345: 38: 1763: 1644: 1511: 913: 532: 438: 144: 845: 1786: 1664: 1638: 1558: 1382: 1172: 980: 486: 482: 392: 380: 307: 299: 266: 207: 908: 425:, OASIS BASIC, and UX-BASIC. This means you can keep most of your existing 1670: 1610: 1552: 1259: 1156: 1117: 1086: 995: 341: 294:
was originally developed and distributed in 1977 by Phase One Systems of
1753: 1747: 1714: 1709: 1599: 1570: 1539: 1517: 1454: 1415: 1390: 1369: 1323: 1301: 1040: 525: 465: 396: 485:- computers that were popular in the day, OASIS provided time-sharing 1591: 1494: 1480: 1468: 1336: 1329: 1294: 1253: 1247: 1067: 1058: 1022: 1000: 740: 739:
in 1985 stated that "the functionality of THEOS is somewhere between
509:
packages being developed and supported by individuals and companies.
400: 27: 149:
Phase One Systems / Timothy S. Williams / THEOS Software Corporation
567:
are supported by the THEOS/OASIS Command String Interpreter (CSI).
1487: 1196: 1105: 970: 672: 667: 587: 544: 513: 434: 414: 404: 303: 903: 1741: 1634: 1448: 1363: 1227: 1190: 989: 744: 539:, and an option to require a certain level of encryption in the 494: 490: 234: 923: 1628: 1471: 1406: 1271: 1028: 512:
The languages distributed with THEOS include THEOS Multi-User
461:-like data extraction tools to third-party software packages. 458: 376: 32: 333:
OASIS consisted of a multi-user operating system, a powerful
269:
processor. When the operating system was launched for the
298:(President Howard Sidorsky). OASIS was developed for the 395:. Microsoft purchased a license for Version 7 UNIX from 177:
THEOS Corona Commercial Release 6 / December 2008
1762: 1723: 1504: 1464: 1438: 1405: 1381: 1353: 1313: 1270: 1237: 1210: 1183: 1137: 1078: 1057: 979: 969: 958: 229: 217: 203: 191: 171: 153: 143: 63:. Unsourced material may be challenged and removed. 449:THEOS operating systems have been distributed by 524:can be used for task automation or to produce a 250:, which translates from Greek as "God", is an 935: 8: 138: 1833: 1144: 976: 966: 942: 928: 920: 137: 387:to make a new operating system based on 123:Learn how and when to remove this message 784:OASIS Users' Group News Letter Volume 5 776: 551:" to further increase defence against 352:. Sidorsky had no choice and claimed 7: 797:UNIX Internals: A Practical Approach 61:adding citations to reliable sources 916:February 1981 through November 1985 844:. February 26, 2010. Archived from 464:THEOS was introduced in Europe by 14: 828:"The History of Microsoft - 1980" 265:for small computers that use the 1843: 1842: 1832: 909:Historia de OASIS®/THEOS® Corona 37: 1429:Transaction Processing Facility 873:Rochkind, Marc J. (Fall 1985). 48:needs additional citations for 1: 1871:Proprietary operating systems 507:vertical-market applications 1007:Multi-Environment Real-Time 951:Real-time operating systems 875:"Pick, Coherent, and THEOS" 862:THEOS/OASIS User′s Handbook 842:"XENIX variant information" 801:Addison Wesley Professional 179:; 15 years ago 159:; 47 years ago 1897: 914:OASIS Users' Group Archive 904:THEOS Software Corporation 451:THEOS Software Corporation 25: 18: 1805: 1147: 1112:Operating System Embedded 16:Computer operating system 1397:Windows Embedded Compact 765:Multiuser DOS Federation 455:Walnut Creek, California 271:IBM Personal Computer/AT 212:IBM Personal Computer/AT 26:Not to be confused with 795:Pate, Steve D. (1996). 1736:Robot Operating System 848:on December 19, 2013. 563:The following list of 553:buffer overrun attacks 497:, THEOS uses external 292:OASIS operating system 21:Theos (disambiguation) 1876:X86 operating systems 254:which started out as 1828:Open-source software 1239:Java virtual machine 409:Santa Cruz Operation 385:Santa Cruz Operation 275:THE Operating System 57:improve this article 19:For other uses, see 296:Oakland, California 140: 520:. A powerful EXEC 1858: 1857: 1586: 1585: 1440:Texas Instruments 1206: 1205: 1133: 1132: 810:978-0-201-87721-2 431:Microsoft Windows 306:). "OASIS" was a 245: 244: 133: 132: 125: 107: 1888: 1846: 1845: 1836: 1835: 1524:ERIKA Enterprise 1212:Capability-based 1145: 977: 967: 944: 937: 930: 921: 891: 890: 888: 886: 870: 864: 859: 853: 852: 838: 832: 831: 824: 818: 817: 792: 786: 781: 263:operating system 252:operating system 241: 238: 236: 230:Official website 187: 185: 180: 167: 165: 160: 141: 135:Operating system 128: 121: 117: 114: 108: 106: 65: 41: 33: 1896: 1895: 1891: 1890: 1889: 1887: 1886: 1885: 1861: 1860: 1859: 1854: 1831: 1801: 1758: 1719: 1582: 1500: 1460: 1434: 1401: 1377: 1349: 1309: 1266: 1233: 1202: 1179: 1129: 1074: 1053: 1035:Real-Time Linux 961: 954: 948: 900: 895: 894: 884: 882: 872: 871: 867: 860: 856: 840: 839: 835: 826: 825: 821: 811: 794: 793: 789: 782: 778: 773: 761: 732: 727: 561: 475: 447: 423:MultiUser BASIC 344:and a powerful 288: 283: 237:.theos-software 233: 183: 181: 178: 163: 161: 158: 154:Initial release 136: 129: 118: 112: 109: 66: 64: 54: 42: 31: 24: 17: 12: 11: 5: 1894: 1892: 1884: 1883: 1878: 1873: 1863: 1862: 1856: 1855: 1853: 1852: 1823: 1815: 1813:= discontinued 1806: 1803: 1802: 1800: 1799: 1794: 1789: 1784: 1779: 1777:David Cheriton 1774: 1768: 1766: 1760: 1759: 1757: 1751: 1745: 1739: 1733: 1731: 1721: 1720: 1718: 1717: 1712: 1707: 1701: 1687: 1680: 1673: 1668: 1662: 1655: 1648: 1642: 1632: 1626: 1620: 1614: 1608: 1603: 1596: 1587: 1584: 1583: 1581: 1580: 1574: 1568: 1562: 1556: 1550: 1544: 1536: 1530: 1527: 1521: 1515: 1508: 1506: 1502: 1501: 1499: 1498: 1491: 1484: 1476: 1474: 1462: 1461: 1459: 1458: 1455:TI-RTOS Kernel 1452: 1444: 1442: 1436: 1435: 1433: 1432: 1426: 1419: 1411: 1409: 1403: 1402: 1400: 1399: 1394: 1387: 1385: 1379: 1378: 1376: 1375: 1359: 1357: 1351: 1350: 1348: 1347: 1341: 1333: 1327: 1320: 1318: 1311: 1310: 1308: 1307: 1306: 1305: 1298: 1291: 1288:Concurrent DOS 1276: 1274: 1268: 1267: 1265: 1264: 1243: 1241: 1235: 1234: 1232: 1231: 1225: 1216: 1214: 1208: 1207: 1204: 1203: 1201: 1200: 1194: 1187: 1185: 1181: 1180: 1178: 1177: 1176: 1175: 1170: 1169:(organization) 1167:T-Engine Forum 1164: 1162:Micro T-Kernel 1154: 1148: 1142: 1135: 1134: 1131: 1130: 1128: 1127: 1121: 1115: 1109: 1103: 1097: 1091: 1082: 1080: 1076: 1075: 1073: 1072: 1063: 1061: 1055: 1054: 1052: 1051: 1044: 1038: 1032: 1026: 1019: 1003: 998: 993: 985: 983: 974: 964: 956: 955: 949: 947: 946: 939: 932: 924: 918: 917: 911: 906: 899: 898:External links 896: 893: 892: 865: 854: 833: 819: 809: 787: 775: 774: 772: 769: 768: 767: 760: 757: 731: 728: 726: 725: 722: 719: 716: 713: 710: 707: 704: 701: 698: 695: 692: 687: 684: 681: 678: 675: 670: 665: 662: 659: 656: 653: 648: 645: 642: 639: 636: 633: 630: 625: 622: 617: 614: 611: 608: 605: 602: 599: 596: 593: 590: 585: 582: 579: 576: 573: 569: 560: 557: 549:protected mode 522:shell language 501:rather than a 499:device drivers 474: 471: 446: 443: 389:Version 7 Unix 337:/Interpreter, 335:Business Basic 287: 284: 282: 279: 243: 242: 231: 227: 226: 221: 215: 214: 205: 201: 200: 195: 189: 188: 175: 173:Latest release 169: 168: 155: 151: 150: 147: 134: 131: 130: 45: 43: 36: 15: 13: 10: 9: 6: 4: 3: 2: 1893: 1882: 1881:1977 software 1879: 1877: 1874: 1872: 1869: 1868: 1866: 1851: 1850: 1841: 1840: 1830: 1829: 1824: 1822: 1821: 1816: 1814: 1811: 1808: 1807: 1804: 1798: 1795: 1793: 1790: 1788: 1785: 1783: 1780: 1778: 1775: 1773: 1770: 1769: 1767: 1765: 1761: 1755: 1752: 1749: 1746: 1743: 1740: 1737: 1734: 1732: 1730: 1726: 1722: 1716: 1713: 1711: 1708: 1705: 1702: 1699: 1698: 1693: 1692: 1688: 1686: 1685: 1681: 1679: 1678: 1674: 1672: 1669: 1666: 1663: 1661: 1660: 1656: 1654: 1653: 1649: 1646: 1643: 1640: 1636: 1633: 1630: 1627: 1624: 1621: 1618: 1615: 1612: 1609: 1607: 1604: 1602: 1601: 1597: 1594: 1593: 1589: 1588: 1578: 1575: 1572: 1569: 1566: 1563: 1560: 1557: 1554: 1551: 1548: 1545: 1542: 1541: 1537: 1534: 1531: 1528: 1525: 1522: 1519: 1516: 1513: 1510: 1509: 1507: 1503: 1497: 1496: 1492: 1490: 1489: 1485: 1483: 1482: 1478: 1477: 1475: 1473: 1470: 1467: 1463: 1456: 1453: 1451: 1450: 1446: 1445: 1443: 1441: 1437: 1430: 1427: 1425: 1424: 1420: 1418: 1417: 1413: 1412: 1410: 1408: 1404: 1398: 1395: 1392: 1389: 1388: 1386: 1384: 1380: 1373: 1371: 1366: 1365: 1361: 1360: 1358: 1356: 1352: 1345: 1342: 1339: 1338: 1334: 1331: 1328: 1325: 1322: 1321: 1319: 1316: 1312: 1304: 1303: 1299: 1297: 1296: 1292: 1290: 1289: 1285: 1284: 1283: 1282: 1281:Multiuser DOS 1278: 1277: 1275: 1273: 1269: 1262: 1261: 1256: 1255: 1250: 1249: 1245: 1244: 1242: 1240: 1236: 1229: 1226: 1223: 1222: 1218: 1217: 1215: 1213: 1209: 1198: 1195: 1192: 1189: 1188: 1186: 1182: 1174: 1171: 1168: 1165: 1163: 1160: 1159: 1158: 1155: 1153: 1152:ITRON project 1150: 1149: 1146: 1143: 1140: 1136: 1125: 1122: 1119: 1116: 1113: 1110: 1107: 1104: 1101: 1098: 1095: 1092: 1089: 1088: 1084: 1083: 1081: 1077: 1070: 1069: 1065: 1064: 1062: 1060: 1056: 1050: 1049: 1045: 1042: 1039: 1036: 1033: 1030: 1027: 1025: 1024: 1020: 1017: 1013: 1009: 1008: 1004: 1002: 999: 997: 994: 992: 991: 987: 986: 984: 982: 978: 975: 972: 968: 965: 963: 957: 952: 945: 940: 938: 933: 931: 926: 925: 922: 915: 912: 910: 907: 905: 902: 901: 897: 881:. p. 231 880: 876: 869: 866: 863: 858: 855: 851: 847: 843: 837: 834: 829: 823: 820: 816: 812: 806: 803:. p. 9. 802: 798: 791: 788: 785: 780: 777: 770: 766: 763: 762: 758: 756: 754: 750: 746: 742: 738: 737: 729: 723: 720: 717: 714: 711: 708: 705: 702: 699: 696: 693: 691: 688: 685: 682: 679: 676: 674: 671: 669: 666: 663: 660: 657: 654: 652: 649: 646: 643: 640: 637: 634: 631: 629: 626: 623: 621: 618: 615: 612: 609: 606: 603: 600: 597: 594: 591: 589: 586: 583: 580: 577: 574: 571: 570: 568: 566: 558: 556: 554: 550: 546: 542: 538: 534: 529: 527: 523: 519: 515: 510: 508: 504: 500: 496: 492: 488: 484: 480: 472: 470: 467: 462: 460: 456: 452: 444: 442: 440: 436: 432: 428: 424: 419: 416: 412: 410: 406: 402: 398: 394: 390: 386: 382: 378: 374: 369: 367: 363: 357: 355: 351: 347: 343: 340: 336: 331: 329: 325: 321: 317: 313: 309: 305: 301: 297: 293: 285: 280: 278: 276: 272: 268: 264: 261: 260:microcomputer 257: 253: 249: 240: 232: 228: 225: 222: 220: 216: 213: 209: 206: 202: 199: 196: 194: 190: 176: 174: 170: 156: 152: 148: 146: 142: 139:THEOS / OASIS 127: 124: 116: 105: 102: 98: 95: 91: 88: 84: 81: 77: 74: –  73: 69: 68:Find sources: 62: 58: 52: 51: 46:This article 44: 40: 35: 34: 29: 22: 1847: 1837: 1825: 1817: 1812: 1809: 1797:Ken Sakamura 1792:Adam Dunkels 1695: 1689: 1683: 1682: 1675: 1657: 1650: 1598: 1590: 1538: 1505:Low resource 1493: 1486: 1479: 1447: 1421: 1414: 1368: 1367:^° kernel → 1362: 1335: 1300: 1293: 1286: 1279: 1258: 1252: 1246: 1219: 1100:Nucleus RTOS 1085: 1066: 1046: 1021: 1015: 1011: 1005: 988: 883:. Retrieved 878: 868: 857: 849: 846:the original 836: 822: 814: 796: 790: 779: 734: 733: 562: 530: 511: 476: 463: 448: 420: 413: 370: 358: 350:U.S. dollars 332: 327: 323: 319: 315: 311: 291: 289: 274: 255: 247: 246: 193:Available in 119: 110: 100: 93: 86: 79: 67: 55:Please help 50:verification 47: 1820:Microkernel 1782:Dave Cutler 1772:Gordon Bell 1677:Sintran III 1547:OpenComRTOS 1248:Chorus/Jazz 541:workstation 427:source code 346:text editor 326:nteractive 318:pplication 224:proprietary 1865:Categories 1839:Comparison 1764:Developers 1725:Frameworks 1667:° Standard 1645:Phantom OS 1623:µ-velOSity 1512:ChibiOS/RT 771:References 533:IP address 362:hand-coded 354:Chapter 11 330:oftware". 113:March 2016 83:newspapers 1787:Dan Dodge 1715:UniProton 1665:RT-Thread 1639:Microware 1559:RT-Thread 1383:Microsoft 1173:T-License 1094:Integrity 981:Unix-like 960:Operating 730:Reception 487:multiuser 483:mainframe 393:Bell Labs 381:Microsoft 366:assembler 308:backronym 208:Zilog Z80 204:Platforms 145:Developer 1849:Category 1671:ScreenOS 1611:FreeRTOS 1553:PX5 RTOS 1260:ChorusOS 1157:T-Kernel 1118:PX5 RTOS 1087:ChorusOS 996:Junos OS 885:19 March 759:See also 753:Coherent 724:TERMINAL 658:INITTAPE 655:INITDISK 641:FILT8080 638:FILELIST 610:COPYFILE 565:commands 559:Commands 537:firewall 528:system. 473:Features 439:SCO UNIX 397:AT&T 342:compiler 1810:Italics 1754:Xenomai 1748:TI-RTOS 1710:VxWorks 1697:Harmony 1600:DioneOS 1571:ThreadX 1540:Nano-RK 1529:FunkOS° 1518:Contiki 1423:4690 OS 1416:4680 OS 1391:ThreadX 1370:Symbian 1302:REAL/32 1184:Partial 1141:support 1114:^ (OSE) 1079:Partial 1041:RTLinux 1016:Unix-RT 973:support 962:systems 712:SPOOLER 697:RESTORE 686:RECEIVE 677:MAILBOX 647:GETFILE 607:COMPARE 598:CADVERF 592:BULKERA 575:ARCHIVE 572:ACCOUNT 526:turnkey 466:Fujitsu 364:in Z80 281:History 219:License 198:English 184:2008-12 182: ( 162: ( 97:scholar 72:"THEOS" 1592:BeRTOS 1577:Zephyr 1561:° Nano 1533:Mynewt 1495:VAXELN 1481:RSX-11 1469:PDP-11 1344:Wombat 1337:REX OS 1330:PikeOS 1324:LLinux 1317:kernel 1295:FlexOS 1254:JavaOS 1068:LiteOS 1059:LiteOS 1023:OS2000 1001:LynxOS 953:(RTOS) 807:  741:MS-DOS 721:SYSGEN 700:SCRIPT 694:REPAIR 690:RENAME 668:LOGOFF 632:ERRMSG 613:CREATE 601:CHANGE 584:BACKUP 581:ATTACH 578:ASSIGN 503:kernel 481:- and 401:16-bit 322:ystem 314:nline 99:  92:  85:  78:  70:  28:THE OS 1691:Thoth 1684:THEOS 1617:µC/OS 1606:embOS 1488:RT-11 1431:(TPF) 1355:Psion 1197:RTEMS 1106:NuttX 971:POSIX 715:START 673:LOGON 644:FORCE 628:ERASE 620:DEBUG 604:CLASS 595:CACHE 588:BASIC 545:Intel 514:Basic 445:THEOS 435:Linux 415:Seiko 405:Xenix 391:from 375:for " 373:Greek 310:for " 304:Zilog 286:OASIS 256:OASIS 248:THEOS 104:JSTOR 90:books 1826:° = 1818:^ = 1742:RTAI 1729:kits 1704:VRTX 1694:^ → 1652:pSOS 1635:OS-9 1565:RIOT 1449:DSOS 1364:EKA2 1228:seL4 1221:EROS 1191:eCos 1139:TRON 1124:RIOT 1048:UNOS 1012:MERT 990:DNIX 887:2016 879:BYTE 805:ISBN 751:and 749:Pick 745:UNIX 743:and 736:BYTE 718:STOP 709:SHOW 703:SEND 683:PEEK 664:LIST 661:KILL 651:HELP 635:EXEC 624:EDIT 516:and 495:UNIX 491:MP/M 479:mini 383:and 290:The 258:, a 239:.com 164:1977 157:1977 76:news 1738:° 2 1659:RMX 1629:MQX 1472:VAX 1466:DEC 1407:IBM 1272:DOS 1251:^ ( 1029:QNX 1010:^ ( 706:SET 680:MSG 616:CSI 493:or 459:SQL 453:in 437:or 411:). 377:God 300:Z80 267:Z80 235:www 59:by 1867:: 1750:^° 1727:, 1647:^° 1619:^° 1613:^° 1595:^° 1579:^° 1514:^° 1457:^° 1374:^° 1372:OS 1346:^° 1326:^° 1315:L4 1263:^) 1257:+ 1230:^° 1224:^° 1126:^° 1108:^° 1014:– 877:. 813:. 799:. 755:. 555:. 441:. 433:, 277:. 210:, 1756:° 1744:° 1706:^ 1700:^ 1641:) 1637:( 1631:^ 1625:^ 1573:^ 1567:° 1555:^ 1549:^ 1543:° 1535:° 1526:° 1520:° 1393:^ 1340:^ 1332:^ 1199:° 1193:° 1120:^ 1102:^ 1096:^ 1090:^ 1071:° 1043:° 1037:° 1031:^ 1018:) 943:e 936:t 929:v 889:. 830:. 547:" 518:C 339:C 328:S 324:I 320:S 316:A 312:O 186:) 166:) 126:) 120:( 115:) 111:( 101:· 94:· 87:· 80:· 53:. 30:. 23:.

Index

Theos (disambiguation)
THE OS

verification
improve this article
adding citations to reliable sources
"THEOS"
news
newspapers
books
scholar
JSTOR
Learn how and when to remove this message
Developer
Latest release
Available in
English
Zilog Z80
IBM Personal Computer/AT
License
proprietary
www.theos-software.com
operating system
microcomputer
operating system
Z80
IBM Personal Computer/AT
Oakland, California
Z80
Zilog

Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.