C EXECUTIVE and PSX Real-Time, Multitasking Kernels

C EXECUTIVE is a real-time, multitasking kernel for embedded applications. It provides support for the entire range of Intel 80x86 microprocessors. The C EXECUTIVE version for the 8086 (real mode) was offered in 1982; JMI has supported 80386 in protected mode since 1987; the 80186/188 microprocessor version has been available since 1981; and the 386EX version was completed in 1994.
C EXECUTIVE provides a complete and efficient run-time environment optimized for C language. C EXECUTIVE is ready to run on standard PC's, yet does not use any DOS or BIOS code. This allows prototyping on a standard PC, then downloading to an embedded 80x86 board. A complete debugging environment is available using standard software tools.
Customer products employing C EXECUTIVE on 80x86 processors include X Window terminals, medical instruments, SCADA systems, process control products, color ink jet printers, cellular telephone systems, electronic cash registers, hand-held electronic instruments, Marine helicopter avionics, and a variety of time-critical applications.
An optional DOS-compatible file system, CE-DOSFILE, supports both floppy and hard disks, with contiguous files. A TCP/IP communications package is also available.
JMI's PSX option adds 57 POSIX.1 system calls to C EXECUTIVE, providing a UNIX-like execution environment on a dedicated real-time kernel. When a POSIX environment is needed and UNIX is too big, PSX provides a small single-user, single-group, but multi-process subset of POSIX for deeply embedded applications. A UNIX workstation can be used for prototyping the application.