Overview of all Drivers

The following tables list all drivers delivered with RTKernel-32 by their respective names and hard- and software requirements:

Type	Name	Requirements	Comments
System	SYSSTD	C run-time system file I/O for stdout	No TLS support.
System	SYSRT32	RTTarget-32 1.1 or higher C run-time system	TLS support, limits number of tasks to 8192.
System	SYSVMF	RTTarget-32 and RTVmf-32 5.12 or higher, C run-time system	TLS support, limits number of tasks to 8192.
Interrupt	IRQRT32	RTTarget-32 1.1 8059A at 20h
Clock	CLKPC	8253 at 40h timer generates IRQ 0	Incompatible with drivers CLKHRTPC and HRTPC.
Clock	CLKHRTPC	8253 at 40h 8059A at 20h timer generates IRQ 0	Combined Clock and high-resolution timer driver. Incompatible with all other high res. timer drivers. Incompatible with multiprocessor kernel.
Clock	CLKRTC	CMOS RTC at 70h 8059A at 20h/A0h timer generates IRQ 8 RTTarget-32 4.0	Incompatible with driver CLKHRTPC.
Clock	CLKAPIC	Target with MP Floating Pointer Structure (see demo program MPDiag)	Recommended for multiprocessor kernel.
Clock	CLKVMF	RTTarget-32 and RTVmf-32 5.12 or higher, C run-time system	Clock driver for RTVmf-32 programs.
Clock	CLKRTH	RTTarget-32 and RTRth-32 5.13 or higher, C run-time system	Clock driver for RTRth-32 programs.
Highres. Timer	HRTNULL	none	Does not implement any timer services.
Highres. Timer	HRTPC	8253 at 40h 8059A at 20h timer generates IRQ 0	Incompatible with drivers CLKHRTPC and CLKPC.
Highres. Timer	CLKHRTPC	8253 at 40h 8059A at 20h timer generates IRQ 0	Combined Clock and high-resolution timer driver. Incompatible with all other clock drivers.
Highres. Timer	HRTPENT	Pentium or higher CPU	May need to be calibrated at run-time. Incompatible with driver CLKHRTPC. Recommended for multiprocessor kernel.
Highres. Timer	HRTSC520	AMD Élan SC520 CPU	Incompatible with driver CLKHRTPC.
Highres. Timer	HRTPM	ACPI PM Timer	Incompatible with driver CLKHRTPC. Recommended for multiprocessor kernel.
Highres. Timer	HRTHPET	HPET	Incompatible with driver CLKHRTPC. Recommended for multiprocessor kernel.
Highres. Timer	HRTVMF	Highres. Timer for RTVmf-32 and RTOS32Win.	Uses RTOS32Win Time Stamp Counter.
Floating Point	FLTNULL	No floating point or reentrant emulator	Does not swap floating point context.
Floating Point	FLT387	387 compatible floating point hardware or emulator
Floating Point	FLTPII	387 or higher CPU	Saves/restores 387 and SSE registers.
Floating Point	FLTEMUMT	387 compatible floating point hardware or reentrant emulator RTTarget-32 1.1
Memory	MEMCHEAP	C run-time system	Does not support RTKernel-32 calls before function main has been called.
Memory	MEMSTH	none	Supports additional function STHeapInfo.
Memory	MEMW32	Win32 Emulation for Win32 heaps	Shares heap space with RTTHEAP.
Memory	MEMSTCH	C run-time system
Source Code	SRCNULL	none	Does not implement source code position information.
Source Code	SRCTDS	file I/O, TDS file
Source Code	SRCMAP	file I/O, MAP file, Microsoft C++ 6.0, 7.0, or 7.1	Linker option /MAPINFO:LINES required
CPU	CPU386F	No segment register changes
CPU	CPU386		Saves/restores segment registers in low-level interrupt handlers