| 680-BSM 16K Prototype Version 1-0x/ | 29-Mar-2022 22:01 | |
| Transformer Replacement/ | 04-Sep-2022 11:26 | |
| 1MHz CPU Clock Mod.pdf | 11-Aug-2021 10:29 | 451K |
| 680-BSM 16K Manual (hi-res).pdf | 29-Mar-2022 11:31 | 34M |
| 680-BSM 16K Manual.pdf | 14-Sep-2021 22:14 | 3.9M |
| 680-KCACR Manual.pdf | 04-Mar-2020 10:00 | 2.1M |
| 680-PCI Manual.pdf | 01-Feb-2023 17:29 | 7.7M |
| 680-UIO Manual.pdf | 23-Mar-2022 20:44 | 2.8M |
| 680-UIO Schematic.pdf | 23-Mar-2022 20:45 | 299K |
| 680 Assembly Manual.pdf | 29-Mar-2022 21:10 | 9.5M |
| 680 Operators Manual.pdf | 14-Sep-2021 22:15 | 795K |
| 680 Programming Manual.pdf | 14-Sep-2021 22:15 | 5.6M |
| 680 Schematics.pdf | 29-Mar-2022 21:12 | 1.5M |
| 680 Theory of Operation.pdf | 14-Sep-2021 22:15 | 1.5M |
| 680 to FD3712 Interface Adapter.pdf | 15-Mar-2025 17:03 | 35K |
| 680 to FD3712 Interface Adapter.xlsx | 15-Mar-2025 17:04 | 13K |
| Altair 680 Capacitor C4 Discharge Mod.pdf | 21-Nov-2022 17:11 | 341K |
| Clock Fix.pdf | 07-Aug-2022 13:54 | 379K |