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| version 2.1.0 |
| Part | Date | Title | Status |
|---|---|---|---|
| 944775-9701 | Model 990 Computer Analog/Digital, Digital/Analog Converter Modules Depot Maintenance Manual | ||
| 944776-9701 Change 1 | 1977-12-15 | Model 990 Computer TX990 Operating System Documentation | ToC |
| 944921-9901 | 990/10 Hardware Specification | ||
| 945236-9701 | Model 990 Computer Communications System Software | ||
| 945250-9701 3rd ed. | 1976-05 | 990 Computer Family Systems Handbook | Online |
| 945251-9701 | Model 990/4 Computer System Hardware Reference Manual | ||
| 945252-9701 | Model 990 Computer Cross Support System User's Guide | ||
| 945253-9701 | 1977-10-01 | Model 990 Computer Model FD800 Floppy Disc System Installation and Operation | Online |
| 945254-9701 | Model 990/4 Program Development System Operation Guide | ||
| 945255-9701 | Model 990 Computer Prototyping System Operation Guide |
