Method for autonomously transferring code to a computer without

Details Method for autonomously transferring code to a computer without Method for autonomously transferring code to a computer without

1995-12-04

1997-09-02

Kriess, Kevin A.

395652, G06F 906, G06F 9445

Patent

active

056641940

ABSTRACT:
In a computer-driven device, a start-up mode after reset is provided whereby boot-up instructions are by default always accepted directly from an external source. The device may comprise a gate array (GA) which is connected directly via a serial port to a receiving or input device, to receive program code for transfer directly as instructions to a microprocessor-type central processing unit. The central processing unit is part of a computer controlled device containing a microprocessor, memory (a RAM), and typically a bulk erase flash memory device, the flash memory device being unprogrammed when the computer controlled device is fabricated originally. When the computer controlled device first powers up, a special mode of operation ensues in which the gate array directly monitor bits received via the serial port from the input device and shifts them into a local register from which bytes or words are loaded directly into the CPU as instructions. A boot sequence is thereby accepted in this manner to load random access memory of the free-running CPU which thereafter can control transfer of additional executable code or load a permanent boot sequence into bulk erase (nonvolatile) flash memory. The invention can be incorporated into a wireless modem/packet terminal node controller. The input device may be a coupling to an external computer system, typically a serial input.

REFERENCES:
patent: 5321840 (1994-06-01), Ahlin et al.
patent: 5325529 (1994-06-01), Brown et al.
patent: 5408624 (1995-04-01), Raasch et al.
patent: 5408664 (1995-04-01), Zarrin et al.
patent: 5410707 (1995-04-01), Bell
patent: 5444861 (1995-08-01), Adamec et al.
patent: 5471674 (1995-11-01), Stewart et al.
patent: 5522076 (1996-05-01), Dewa et al.

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