Development and debug tool for microcomputers

Details Development and debug tool for microcomputers Development and debug tool for microcomputers

1989-03-15

1991-09-10

Heckler, Thomas M.

Boots, shoes, and leggings

36426791, 3642402, 364238, G06F 1100

Patent

active

050479261

ABSTRACT:
A debug interface for use in debugging a microprocessor during development. The debug interface is connected with a host computer for the bidirectional data transmissions and utilizes a ROM socket on the object system to communicate with the object system being debugged. The object system can read data from the debug interface only, but cannot write data thereto. The testing software program in the host computer is entered into an SRAM on the debug interface through a host computer data bus. When the content of the registers in the object system is required by the software, the data needed are dumped onto the object system address bus by software techniques; then through an input port, connecting the object system address bus to the host computer data bus, the data can be received by the host computer, and so displayed on the monitor of the host computer.

REFERENCES:
patent: 4275441 (1981-06-01), Takeuchi
patent: 4308581 (1981-12-01), Raghunathan
patent: 4312066 (1982-01-01), Bantz et al.
patent: 4517661 (1985-05-01), Graf et al.
patent: 4636945 (1987-01-01), Tanagawa et al.
patent: 4703482 (1987-10-01), Auger et al.

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