
Operating Systems and Performance Features
A-18
System Software for M7-300 and M7-400 Installation and Operation
C79000-G7076-C850-02
A.6 Special Features under M7 RMOS32-DOS
Programs Which Cannot Execute under RMOS-DOS
A number of DOS program cannot execute under RMOS-DOS, namely:
programs which reprogram the interrupt controller, and
programs which reprogram timer 0 or timer 1. Access to timer 2, however, is
permissible.
Software using one of the following DOS extenders cannot run on M7 RMOS32
with MS DOS, for example:
Phar Lap TNT DOS-Extender (e.g. under DOS Visual C++, MASM V6.1, ACAD
V12, Borland C V4.02, V4.5)
DOS/4GW 32-Bit DOS-Extender of Rational Systems (contained for example in
Watcom C++ 9.5)
DOSX from Symantec C++ Professional 6.1
The use of the Quick-C editor under MS-DOS can lead to sporadic crashes of the
M7 RMOS32 operating system.
Note
M7 RMOS32 with MS-DOS is not released for use with the Quick-C development
environment.
The use of this editor is not permitted during normal operation.
DOS Debugger
When a debugger is used in the DOS task, it is not possible to execute an INT n
command in Single Step mode when this interrupt is serviced by RMOS-DOS
rather than by DOS. This always applies to the EMS interrupt (67H) and the
interrupt (73H) used by the RM3_TSR program. It is recommended that a
breakpoint be set after the INT n command instead of using Single Step mode.
RMOS DOS File Management System
There are a number of differences between the RMOS-DOS file management
system and the original HSFS. These differences originate from the inherent
differences between the DOS and the RMOS file management systems.
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