- Model 990 Computer FORTRAN Programmer’s Reference Manual (946260-9701, original, 328 pages)
- Model 990 Computer TX FORTRAN Installation (2261737-9701, original, approx 10 pages – appears to be incomplete or just a series of update pages)
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Model 990 Computer Fortran
Programmers Reference Manual
TXDS Fortran Release on 8″ Disks
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Model 990 Computer Fortran
Programmers Reference Manual,
946260-9701,
1st January 1979
Model 990 Computer TX FORTRAN Installation, 2261737-9701
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TXDS Fortran Runtime Release 3 936136-1602 Mfg Rev 1C
TXDS Fortran Compiler Release 3, 936136-1601 Mfg Rev 1C
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TXDS Fortran Compiler 936136-1 Rev. B TXDS Fortran-Diskette Release 2.2
TXDS Fortran Runtime 936136-2 TXDS Fortran-Diskette Release 2.2