• Hardware debug of PCI-based peripherals using 'C' and DOS
• Very fast compiles
• Fast reboot after crash
• No operating system!
• 'C' control of the following functions:
  • Direct reads/writes to all of PC memory without operating system or driver
  • I/O reads/writes
  • PCI configuration reads/writes
  • Interrupts
• Examples provided
• Very tight loops for oscilloscope and logic analyzer debug

• Brochure [PDF] (39KB)
  [HTML] (19KB)
• Phar Lap Catalog [PDF] (9KB)
  [HTML] (6 KB)
• Manuals [ZIP]

Phar Lap TNT
Dos Extender™

A DOS Extender is a software tool that enables developers to access extended memory beyond the 640K DOS limit. The DOS extender functions as a layer between DOS in real mode and an application in protected mode. It is embedded into the program and is invisible to the end-user. Phar Lap's DOS extenders support all the major industry standards-DPMI, XMS and VCPI-so that Extended-DOS applications can run under DESQview™ and all modes of Windows™, as well as DOS.

TNT DOS-Extender™ SDK
(Formerly 386|DOS-Extender)

TNT DOS-Extender is a 32-bit development tool that enables programmers to build multi-megabyte applications that take advantage of powerful NT features, including DLLs, threads, and multitasking under DOS. TNT also includes the WinPipe VxD which enables developers to write a Windows GUI front end for their 32-bit DOS applications. TNT DOS-Extender runs on any DOS-based 80386 or higher PC and supports a wide range of 32-bit tools, including Borland C++ 4.0 and the Microsoft Visual C++ 32-bit Edition compiler. The Software Development Kit (SDK) includes, in addition to TNT DOS-Extender, a 32-bit version of the Microsoft CodeView debugger, Phar Lap's 386|ASM macro assembler, 386|LINK linker, 386|LIB librarian, and 386|SRCBug debugger.

TNT DOS-Extender RTK

The TNT DOS-Extender Run-Time Kit is available for developers who want to embed TNT DOS-Extender into their applications for distribution to customers.