The development of Nebula is continuing as part of the Dcpu16Universe project, where it is bundled with the Pulsar suite of programs for DCPU16 assembly. Go there now.

Nebula is an emulator for the DCPU-16 processor.

Nebula supports the full specification of the DCPU-16 based on version 1.7 of the specification. Nebula also supports the following hardware peripherals:

• The generic clock.
• The LEM1802 monitor.
• The generic keyboard.
• The M35FD floppy drive
  • Press F10 to insert a write-protected floppy disk.
  • Press F11 to insert a normal floppy disk.
  • Press F12 to eject the disk.

Nebula is written to the C++11 standard, which is only supported by the latest versions of the GCC and Clang compilers at the time of this writing.

Aside from incompatibilities with modern C++11 language and library features, Nebula should be entirely platform independent. This is accomplished by limiting dependencies to cross-platform libraries including:

• Boost (>= 1.54)
• SDL (== 1.2)
• Google-Test (bundled)

To build Nebula, CMake (>= 2.8) is required.

Nebula is released under the terms of version 2.0 of the Apache License.

Nebula uses the concurrency features of C++11 to simulate each peripheral device. Each peripheral is therefore able to operate independently at its own clock frequency. The peripherals communicate with the processor asynchronously via interrupts only.