53 lines
1.1 KiB
C
53 lines
1.1 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(): print the cpu instruction set
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* This is a user help function, can be activated via
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* the -h paramter.
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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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* initialise_ram(): read inputstream 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 the mashine code in the 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(): get the addressed data from the 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(): execute 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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