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Henry Massalin. A 68010 Multitasking Development System. Master's thesis, The Cooper Union for the Advancement of Science and Art, New York City, 1984.

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Synthesis: An Efficient Implementation of Fundamental Operating.. - Massalin (1992)   (52 citations)  Self-citation (Massalin)   (Correct)

....based on the 68000 CPU [4] but designed in such a way that it could be split into two independently operating halves, so we each would have a computer to take with us after we graduated. Jim did most of the hardware design while I concentrated on software. The first version of the software [19] consisted of drivers for the machine s serial ports and 8 bit analog I O ports, a simple multi tasker, and an unusual debug monitor that included a rudimentary C language compiler interpreter as its front end. It was quite small 1 This is still true today despite an order of magnitude speed ....

Henry Massalin. A 68010 Multitasking Development System. Master's thesis, The Cooper Union for the Advancement of Science and Art, New York City, 1984.


The Synthesis Kernel - Pu, Massalin, Ioannidis (1988)   (16 citations)  Self-citation (Massalin)   (Correct)

....based on a 68020 processor at 20 MHz with a 16 bit wide bus [3] For debugging and measurements, the prototype hardware provides single step and real time trace facilities. In addition, a ROM based monitor contains an assembler, a disassembler, and a process manager, with a C style interface [11]. Other commercially available machines are SUN 3, Macintosh II, and similar products. With multiple SCPUs in the same address space and SIOs to send receive messages, Synthesis supports parallel machines of both shared memory model and messagepassing model. For efficiency and lack of code ....

....Each implementation will emphasize performance, use the particular features of its own hardware, and maintain rigorous compatibility with the synthetic machine interface. 4. 2 First Version of Software The first version of Synthesis kernel is being written incrementally on top of a small kernel [11]. At the moment, the Factoring Invariants method has been used in all input and output devices (SIO) including terminal I O and a RAM based file system. In the round robin scheduler, the Executable Data Structures method provides fast context switch between synthetic machines and synthetic CPUs. ....

Henry Massalin. A 68010 Multitasking Development System. Master's thesis, The Cooper Union for the Advancement of Science and Art, New York City, 1984.

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