摘要:
A microprocessor comprises a processor unit (101) for decoding and executing an instruction, two ports (102, 103) each for transferring address, data and control signals between each of said ports and a respective memory connected thereto, and address buffer (1201-1, 1301-1) writable from said processor unit (101) and readable from said two ports (102, 103), a data buffer (1201-, 1301-2; 1201-3, 1301-3) which is readable and writable from said two ports (102, 103) and from which an instruction may be read by said processor unit (101), and means for controlling an address transfer from said address buffer to one of the memories and also a data transfer between said data buffer and one of the memories via the designated port according to a memory access request and a port designating signal from said processor unit, whereby an instruction fetch and a data access can be performed with respect to the two memories,
摘要:
A graphic processing apparatus comprises a graphic processor (1) and a first memory (3, 4); wherein said graphic processor comprises a first port (103) for transmission or reception of data to and from said first memory (3, 4) in synchronism with a first clock (7), and a second port (102) for transmission or reception of data to and from a CPU (8) in synchronism with a second clock (13); and said graphic processing device is so constructed that data can be transmitted between said first memory (3, 4) and said CPU (8) by employing said first port (103) and said second port (102).
摘要:
A microprocessor suitable for processing a large quantity of graphics data. Graphics processing apparatus and method using the microprocessor are also disclosed. The microprocessor (1) independent of a CPU has two ports (102, 103), and performs an instruction fetch and a data access or a memory access simultaneously to two memories (3, 10; 3, 4, 10) coupled through separate buses. In the graphics processing apparatus in which this microprocessor is employed, the graphics transfer between a system memory (10) and a frame memory (4) can be performed at higher speed.
摘要:
An object of the present invention is to provide a charged particle beam apparatus and an alignment method of the charged particle beam apparatus, which make it possible to align an optical axis of a charged particle beam easily even when a state of the charged particle beam changes. The present invention comprises calculation means for calculating a deflection amount of an alignment deflector which performs an axis alignment for an objective lens, a plurality of calculation methods for calculating the deflection amount is memorized in the calculation means, and a selection means for selecting at least one of the calculation methods is provided.
摘要:
An object of the present invention is to provide a charged particle beam apparatus and an alignment method of the charged particle beam apparatus, which make it possible to align an optical axis of a charged particle beam easily even when a state of the charged particle beam changes. The present invention comprises calculation means for calculating a deflection amount of an alignment deflector which performs an axis alignment for an objective lens, a plurality of calculation methods for calculating the deflection amount is memorized in the calculation means, and a selection means for selecting at least one of the calculation methods is provided.
摘要:
A microprocessor suitable for processing a large quantity of graphics data. Graphics processing apparatus and method using the microprocessor are also disclosed. The microprocessor (1) independent of a CPU has two ports (102, 103), and performs an instruction fetch and a data access or a memory access simultaneously to two memories (3, 10; 3, 4, 10) coupled through separate buses. In the graphics processing apparatus in which this microprocessor is employed, the graphics transfer between a system memory (10) and a frame memory (4) can be performed at higher speed.