Profile:

Code name: maruCc45 (Nickname:maruC SMOKE station) Architect: Waki Murakami (Cofabricator:Miki Tanaka) Became operational:Friday, July 31, 1998 Type: pipelined RISC having 3 stages Instructions: two-operand format 16bit-instructions x 30

Special features:

Fully interlocked pipeline Internal interruption handling (overflow)

Machine organization:

Registers: 8bit General purpose registers x 6 Logic units: 8 bit ALU x 1, 8 bit barrel shifter 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: 40MHz(estimated) FPGA: Xilinx4010PG191(using 346 CLBs out of 400) TTL: TI 74 series IC x 25 I/O: 18 switches, 12 LEDs Application program: Euclidean algorithm

Days taken:

System design: 3 weeks CAD: 7 weeks Fabrication: 2 weeks Debug: 3 weeks

Comments:

Although something I planned was remaining, I satisfied since the very Euclidean algorithm worked.

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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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