
Product Overview
1-8
System Software for M7-300 and M7-400 Installation and Operation
C79000-G7076-C850-02
1.4 Brief Description of M7 RMOS32 for MS DOS
Characteristic Features
M7 RMOS32 for MS DOS has the following characteristic features:
Preconfigured real-time multitasking operating system for PC-compatible
systems
MS-DOS V6.22 executes as M7 RMOS32 task
Defined response times in the microsecond or millisecond range, real-time
capability for measuring, open-loop control and closed-loop control
Booting
MS-DOS is always booted first. M7 RMOS32 is started by MS-DOS via a special
load program.
Device Control
The graphic card and the keyboard are controlled by MS-DOS.
All drives (diskette, hard disk, etc.) known to BIOS are controlled by MS-DOS.
The interrupt controller and the timer chip are controlled by M7 RMOS32. The
functions necessary for MS-DOS are simulated.
Other devices and interfaces can be handled by either MS-DOS or M7 RMOS32.
This is specified in the configuring phase.
Interrupt Handling
Timer interrupts are serviced by M7 RMOS32. The timer interrupt for MS-DOS is
simulated by M7 RMOS32.
Keyboard, hard disk and diskette interrupts are handled by MS-DOS.
All other interrupts can be handled by either MS-DOS or M7 RMOS32. This is
specified in the configuring phase.
File Management System
MS-DOS’s own file management system is used.
The data media are made accessible to M7 RMOS32.
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