发明名称 MEMORY EXTENDING SYSTEM OF DATA PROCESSING DEVICE
摘要 PURPOSE:To satisfy a function requested by an analyzing device, etc., by a simple constitution, by putting a function which is insufficient by a standard function, into an extended memory in a general data processing device, and compensating function shortage of the data processing device. CONSTITUTION:An analyzing device is constituted by combining a data processing device and an analyzing apparatus, and to a bidirectional bus buffer 15, an A-register 16 is connected. To this A-register 16, an address decoder 5 is connected through gates 6, 7. Also, an output of the A-register 16 is connected to a B-register 9, and to the B-register 9, extended program memories 10-12 are connected. Also, to the B-register 9, outputs of the decoder 5 and the gate 7 are inputted, and by a write signal R/W from a CPU and a selecting output of the decoder 5, access to the A and B-registers 16, 9 is selected. In this way, by the memories 10-12, the part which is insufficient by the standard function is compensated, and the function requested by the analyzing device is satisfied by a simple constitution.
申请公布号 JPS58129562(A) 申请公布日期 1983.08.02
申请号 JP19820010099 申请日期 1982.01.27
申请人 HITACHI SEISAKUSHO KK 发明人 KITAGAWA MASATOSHI;NISHIWAKI KOUJI
分类号 G06F9/32;G06F12/06;G06F13/00;(IPC1-7):06F13/00 主分类号 G06F9/32
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