70 lines
1.4 KiB
C
70 lines
1.4 KiB
C
#ifndef TOY_H
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#define TOY_H
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#define CPU_TYPE "Koopman_TOY_CPU"
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#define RAM_SIZE 4096
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#define CPU_WORD_SIZE 16
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extern const uint16_t * const ACCU; //read only access to accu
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/**
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* print_instructionSet(): prints the cpu instruction set.
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* This is a user help function and can be activated via
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* the -h parameter.
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* Return: none
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*/
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void print_instructionSet(void);
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/**
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* print_instructionSet(): prints the cpu architecture.
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* This is a user help function and can be activated via
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* the -i parameter.
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* Return: none
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*/
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void print_architecture(void);
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/**
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* print_instruction(): converts a OP-Code into a human word.
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* Return: none
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*/
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void print_instruction(uint8_t opcode);
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/**
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* initialise_ram(): reads input stream into the toy-ram.
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* Return:
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* the number of successfully read machine words,
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* -1 in case of error.
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*/
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int initialise_ram(uint16_t *ram, int argc, char **argv );
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/**
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* get_opcode(): segments machine code as OP-Code.
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* Return: 4-bit OP-Code.
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*/
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uint8_t get_opcode(uint16_t instruction);
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/**
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* get_data(): gets the addressed data from RAM.
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* Return: the 12-bit data address.
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*/
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uint16_t get_data(uint16_t instruction);
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/**
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* execute(): executes the toy-CPU instruction.
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* This function implements the CPU instruction set;
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* use print_instructionSet() for an overview.
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* Return: true if there is a jump.
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*/
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bool execute(uint8_t op_code, int data_addr,uint16_t *ram);
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#endif
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