MIL-STD-1750A CPU architecture support

[XVilka]

MIL-STD-1750A or 1750A is the formal definition of a 16-bit computer instruction set architecture (ISA), including both required and optional components, as described by the military standard document MIL-STD-1750A (1980). Since August 1996 is inactive for new designs.

In addition to the core ISA, the definition defines optional instructions, such as a FPU and MMU. Importantly, the standard does not define the implementation details of a 1750A processor.

• http://www.seadeo.com/development_tools.htm
• https://github.com/kjseefried/Mil-std-1750A-Emulator
• https://github.com/EtchedPixels/sim1750a/tree/master/sim1750-2.3b

Examples of MIL-STD-1750A implementations include:

• CPU Technology, Inc. CPU1750A-FB, a high performance 1750A SOC designed to give existing applications a late life performance boost.
• Delco Electronics Magic V 1750 Processor
• Dynex Semiconductor MAS281. A radiation hardened SOC implementation on a 64-pin multichip module with an optional MMU.
• GEC-Plessey RH1750, a radiation-hardened version for aerospace and space flight applications. GEC-Plessey, under its previous incarnation as Marconi Electronic Devices, also initially developed the MAS281 and MA31750A[1] series of processors, later made available through Dynex Semiconductor
• Honeywell HX1750, fabricated on Honeywell's Silicon on Insulator CMOS (SOI-IV) process giving radiation hardness. The HX1750 includes an FPU and peripherals on chip.
• Johns Hopkins University Applied Physics Laboratory (JHU/APL) MIL-STD-1750AAV space flight qualified processor. A multi-board silicon on sapphire implementation specifically designed for space flight.
• Marconi Electronic Devices MIL-STD-1750A.
• McDonnell-Douglas MD-281. A radiation hardened SoS three die implementation on a 64-pin multichip module.
• National Semiconductor F9450 series.
• Pyramid Semiconductor PACE P1750A. The family includes the P1750A CPU, the P1750AE Enhanced CPU, the P1753 Memory Management Unit (MMU), the P1754 Processor Interface Chip (PIC) and the P1757ME Multi-Chip Module. This line was acquired from Performance Semiconductor in 2003.
• Royal Aircraft Establishment Farnborough MIL-STD-1750A implementation in AMD 2901 bit-slice technology.[2]

HX1750-Datasheet.pdf
mil-std-1750a-1.7.pdf
ut1750micro.pdf