| Name | Size |
|---|---|
| 400 series | DIR |
| 500 series | DIR |
| 600-CPU Superboard-II | DIR |
| 600 series | DIR |
| 65a.hex | 629 KB |
| 65f3.hex | 629 KB |
| Challenger-2P | DIR |
| Challenger 1P | DIR |
| Challenger 1P-2 | DIR |
| Challenger 2P-hybrid | DIR |
| Challenger 3P | DIR |
| OSI Model 500 CPU Manual.pdf | 2,096,491 KB |
| OSI Challenger 3P.jpg |
|
| OSI Challenger 3P rear-ports.j | 372,992 KB |
| OSI SSJ-V2N2-Mar-Apr 1978-1.pd | 1,208,250 KB |
| PEEK-65 vol4-12.pdf | 21,233,666 KB |
| PEEK-65 vol4-8.pdf | 18,021,909 KB |
| Peek(65)V5N1-01 1984.pdf | 1,681,348 KB |