Desktop CYBER (DtCYBER) emulates a range of Control Data Corporation CYBER mainframes and peripherals in software.

Control Data Corporation (CDC) has ceased manufacture of CYBER mainframes in 1992 but there are still a number of sites which run mission critical applications on CYBERs. It has become increasingly difficult to maintain and repair these mainframes and attached peripherals.

Many organizations have developed software specifically for CDC CYBER mainframes. The bulk of the software was written in CDC's FORTRAN taking advantage of its high-performance 60-bit math's. CDC's FORTRAN was a unique dialect with many non-standard extensions and thus is not easily portable to modern compilers and operating systems. Former CDC customers like the nuclear power generation industry have performed extensive calculations using such software in the 1970s and 1980s. Now because of upgrades to nuclear reactors it has become critically important to redo some of these calculations.

DtCYBER replaces ageing CYBER mainframes and all of its peripherals by a high-performance software emulation running on a modern Windows or Linux host. The emulator provides current and past users of CYBER mainframes with an accurate emulation of all aspects of the legacy hardware. All CDC operating systems and application software run unmodified on modern hardware. Performance of the emulation on an average desktop PC is better than on legacy hardware.

DtCYBER emulates the following mainframe types:

• CDC 6400
• CDC CYBER 73
• CDC CYBER 173
• CDC CYBER 175
• CDC CYBER 170 model 865

DtCYBER emulates the following subsystems:

• CPU
• Central memory of up to 256K words (6400, CYBER 73, CYBER 173 and CYBER 175)
• Central memory of up to 1024K words (CYBER 170 model 865)
• Extended Core Storage (ECS) or Unified Extended Memory (UEM)
• 10 or 20 peripheral processors (PPs)
• 12 or 24 channels to external devices
• Real-time clock
• Display controller
• Interlock registers (CYBER 73)
• CMU (CYBER 73 and CYBER 173)
• Status and control registers (CYBER 173 and CYBER 175)
• Maintenance registers (CYBER 170 model 865)

DtCYBER emulates the following peripherals and associated controllers:

• CC545 console
• 669 tape drives
• 679 tape drives
• 844 disk drives
• 885 disk drives
• 405 card reader
• 415 card punch
• 501 printer
• 512 printer
• 6676 terminal multiplexer
• 2550 NPU running CCP with ASYNC TIP
• Two-port multiplexer (CYBER 170 model 865)

The emulation has been verified on the following CDC operating systems or maintenance/diagnostic systems:

• SMM 4.0
• CMM 1.2A
• KRONOS 2.1
• NOS 1.2
• NOS 1.3
• NOS 1.4
• NOS 2.1
• NOS 2.3
• NOS 2.4.2
• NOS 2.5.3
• NOS 2.8.1
• NOS 2.8.2
• NOS 2.8.7
• NOS/BE 1.5
• SCOPE/Hustler

DtCYBER does not run NOS/VE which requires virtual mode available only on CYBER 180s.

Note: No CDC operating system is included with DtCYBER. Users must supply their own OS installation tapes to make use of the emulator. Please contact Tom Hunter for help with conversion of existing 9-track tapes to TAP disk images used by the emulator.

Screenshots of DtCYBER
Prices and licensing options
Links to general info about CDC CYBER related material
Photos and CDC advertising material
Contacts

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