Memory access control apparatus

Details Memory access control apparatus Memory access control apparatus

G - Physics

06

F

354/236.2

G06F 13/16 (2006.01) G06F 1/04 (2006.01) G06F 3/153 (2006.01) G06F 13/28 (2006.01) G09G 1/16 (2006.01)

Patent

CA 1202730

MEMORY ACCESS CONTROL APPARATUS ABSTRACT OF THE DISCLOSURE In a microcomputer system with a central processing unit (CPU) connected to a non-synchronized bus, and a cathode ray tube (CRT) display, a memory access control apparatus includes a memory, a CRT controller connected to the CRT for accessing the memory, a system clock for generating system clock pulses which are supplied to the CPU, a multiplexing clock for generating multiplexing clock signals based on the system clock, and a multiplexer connected to the CPU and the CRT controller through which the CPU and the CRT controller selectively access the memory in a time sharing manner according to the multiplexing clock signals.

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