| BASIC in ROM | Description |
| OSI_8K_Basic_in_ROM.pdf | OSI Basic In ROM user guide |
| OSI_BASIC_IN_ROM.pdf | All About OSI Basic In ROM by Edward H. Carlson Thanks to Bob Thompson |
| C1P | Description |
| C1P_sams_jf_600dpi.pdf | Service Manual for OSI 600 & 610 boards Thanks to Jeff Ferguson |
| C1P-UserManual.pdf | Superboard Challenger 1P User Manual (preliminary) |
| basicnotes.pdf | C1P Basic Memory map |
| C4P | |
| C4P_Sams_jf_600dpi.pdf | C4P 502, 505, 527, 540, 542 Service manual 600DPI Thanks to Jeff Ferguson |
| C4P-OperatorsManuals.pdf | C4P Operations Manual (160pg) |
| OS65D | |
| OS65D-refcard.pdf | Summary of OS65D commands |
| OS65D_V3.2-Dissasembly.pdf | Disassembly of OS-65D |
| DiskDriverRoutines.txt | Commented diassembly of OS65D disk driver |
| OS65D-disassembly.zip | Ed's disassembly of OSI 65D V3.3 disk utilities |
| BASIC65D-disassembly.zip | Ed's disassembly of OSI 65D V3.2, V3.3 BASIC |
| C3D | |
| Challenger III Multiple Processor Operations Manual.pdf | C3 Multiple CPU manual Thanks to Jonathan Chapman |
| TheChallengerIIISetupAndOperationsManual.pdf | Challenger III Setup and Operations manual |
| C2_C3_Sams.pdf | C2/C3 service manual for OSI470, 505A, 510C, 520B, 520C, 525, 527, 535, 550, 555, 590, 592, 594 boards Thanks to Jeff Ferguson |
| OS65U | |
| OS65U.pdf | OS65U V1.44 Manual |
| MacomOSI.pdf | 1982 brochure of M/A-COM OSI product lines, incl. OS65D CS-100 and OS65U Keysystems |
| OSI CPM | |
| Introduction to CPM Features and Facilities.pdf | Digital Research 1978 CPM introduction Thanks to Bill Dromgoole |
| Manual CP_M2 Ohio Scientific C3.pdf | CP/M2 on Ohio Scientific C3 from Lifeboat Associates (C) 1980 Thanks to Bill Dromgoole |
| OS CPM Microsoft Utility Software Manual.pdf | Microsoft Macro-80, Cobol-80, Fortran-80, linker information Thanks to Bill Dromgoole |
| OS CPM Fortran-80 Users & Reference Manual.pdf | Microsoft Fortran-80 information Thanks to Bill Dromgoole |
| OS CPM Cobol-80 Users & Reference Manual.pdf | Microsoft Cobol-80 information Thanks to Bill Dromgoole |
| Hardware | |
| MPI_B51-B52_Product_Manual_Long.pdf | MPI B51/B52 5.25" Floppy disk drive manual |
| MPI Flexible Disk Drive 51-52 Product Manual.pdf | MPI B51/B52 5.25" Floppy disk drive manual High Res (37MB) |
| hazeltine_1420-rm.pdf | Hazeltine 1420 Terminal Reference Manual |
| SA1000_Servc_Dec80.pdf | Shugart SA1000 Hard drive service manual |
| SA1000_OEMmanual.pdf | Shugart SA1000 Hard disk OEM manual |
| FDD100-8_V1.pdf | Siemens FDD100-8 8" Floppy disk drive OEM manual |
| FDD100-8_V2.pdf | Siemens FDD100-8 8" Floppy disk drive Maintenance manual incl. schematics |
| SA800_OM.pdf | Shugart SA800/801 8" Floppy disk OEM manual |
| 50575-4_SA800_Maint_Feb78.pdf | Shugart SA800/801 Maintenance Manual |
| 50576-4_SA800_Parts_May77.pdf | Shugart SA800/801 Parts Manual |
| 50664-1_SA800_TheorOp_May78.pdf | Shugart SA800/801 Theory of operation manual |
| drive-tech-info!.txt | Herb Johnson's floppy disk drive technical notes |
| rabble65_technical_manual.pdf | Detailed tech manual for OZI Computer's Rabble 65, an Australian computer with OSI roots
Thanks to chickenman for scanning and creating this searchable PDF! |
| Misc | |
| OSI-65V.pdf | OS 65V Rom monitor instructions |
| OSI PROM Monitor.pdf | Instructions for 65A, 65V PROM Monitor, C1/C2/C3/OSI440/OSI500 |
| OSI 68A 8K PROM Monitor.pdf | Instructions for 6800 PROM Monitor 68A2 for C3/OSI510 |
| OSI-Assembler_Editor.pdf | OSI Assembler Editor Manual |
| Wp6502.txt | Some WP6502 instructions |
| Aardvark Catalog.pdf | Aardvark Technical notes & useful programs |
| Advertisements | |
| OSI 1976 Winter Catalog.pdf | OSI 1976 catalog |
| OSI 1976 Order Form.pdf | OSI winter 1976 order form & dealers |
| OSIWinter80Cat.pdf | OSI December 1980 product catalog |
| OSIC28PSalesFlyer.pdf | OSI C8P Sales Flyer |
| OSICat.pdf | OSI product line pamphlet |
| OSIChallenger.pdf | OSI Challenger product line |