Profile:

Code name: maruCc43 (Nickname:playboy) Architect: Hideaki Mukai (Cofabricator:Yuki Yamaguchi) Became operational:Friday, July 10, 1998 Type: pipelined RISC having 3 stages Instructions: two-operand format 16bit-instructions x 20

Special features:

Fully interlocked pipeline Internal interruption handling (overflow)

Machine organization:

Registers: 8bit General purpose registers x 4 Logic units: 8 bit ALU x 1 Internal bus: 8 bit x 3 External bus: 16 bit instruction bus x 1, 8 bit data bus x 1 Main Store: 256Byte x 2 (instruction) + 256Byte (data) Maximum CPU frequency: 43.5MHz(estimated) FPGA: Xilinx4010PG191(using 248 CLBs out of 400) TTL: TI 74 series IC x 28 I/O: 22 switches, 13 LEDs Application program: Euclidean algorithm

Days taken:

System design: 2 weeks (net: 5 days) CAD: 5 weeks (net: 20 days) Fabrication: 2 weeks (net: 6 man days) Debug: 4 weeks (net 15 days)

Comments:

The first step for me was to clear the LOAD/STORE instructions. Although the machine cannot calculate LCM, I am satisfied with my effort. This course was a very good experience for me.

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The computer created by me at the first time in my life.(Japanese)

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Computer Engineering Experiment City-1 in 1998 on Verilog HDL and FPGA

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Microcomputer Design Educational Environment City-1

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