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AT90S1200 vs. RISC MCU: Comparing Microcontrollers Based on AVR AT90S1200 and VHDL Development

RISC MCU is a microcontroller developed in VHDL based on Atmel's AVR AT90S1200 characteristics and instructions. The project utilizes Altera EPF10K20RC240-4 with 92% device efficiency, offering 18MHz. Detailed architecture overview with 3 IO ports of 8-bits each, external interrupt, and clock support. Instruction cycle and pipeline diagrams show a dual-stage design for efficient instruction execution. Instruction set includes Arithmetic, Logic, Branch, Skip, Data Transfer, Bit Test, and Miscellaneous functions. Totaling 92 instructions, providing comprehensive capabilities for embedded systems development.

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AT90S1200 vs. RISC MCU: Comparing Microcontrollers Based on AVR AT90S1200 and VHDL Development

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  1. AT90S1200 vs RISCMCU RISCMCU é um microcontrolador desenvolvido em VHDL com base nas caracteristicas e instruções do microcontrolador RISC da Atmel o AVR AT90S1200.

  2. O projeto RISCMCU utiliza 92% do dispositivo EPF10K20RC240-4 da Altera * 18 MHz pode ser conseguido com dispositivo mais rápido da mesma família

  3. Vista geral da Arquitetura * Total são 3 IO ports de 8-bits (3 ports = 24 pinos) * Interrupção externa e clock externo

  4. Diagrama de Blocos

  5. Instructions Cycle / Pipelines O Pipeline tem dois estágios em um ciclo de máquina, busca de instrução e execução.

  6. Instruções O microcontrolador projetado é capaz de executar 92 instruções. Arithmetic and Logic Instructions (20) :- • ADD, ADC, SUB, SUBI, SBC, SBCI, AND, ANDI, OR, ORI, EOR, COM, NEG, SBR, • CBR, INC, DEC, TST, CLR, SER Branch and Skip Instructions (32) :- • RJMP, RCALL, RET, RETI, CPSE, CP, CPC, CPI, SBRC, SBRS, SBIC, SBIS, BRBS, • BRBC, BREQ, BRNE, BRCS, BRCC, BRSH, BRLO, BRMI, BRPL, BRGE, BRLT, BRHS, • BRHC, BRTS, BRTC, BRVS, BRVC, BRIE, BRID Data Transfer Instructions (10) :- • LD Z, LD Z+, LD –Z, ST Z, ST Z+, ST –Z, MOV, LDI, IN, OUT Bit and Bit Test Instructions (28) :- • SBI, CBI, LSL, LSR, ROL, ROR, ASR, SWAP, BSET, BCLR, BST, BLD, SEC, CLC, SEN, • CLN, SEZ, CLZ, SEI, CLI, SES, CLS, SEV, CLV, SET, CLT, SHE, CLH Misc Instructions (2) :- • NOP, SLEEP 20 + 32 + 10 + 28 + 2 = 92 instruções

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