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emulator
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implement some review comments from Klemens

This commit is contained in:
lux 2017-09-18 16:43:54 +02:00
parent 8b94dd5ed0
commit 669072be49
3 changed files with 13 additions and 10 deletions
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7
src/debug/debug.c
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@ -38,7 +38,7 @@ void makeHexDump(bool base_2, uint16_t ram[])
return;
}
if(!(fp=fopen(timestamp,"wb")))
if(NULL==(fp=fopen(timestamp,"w")))
{
fprintf(stderr,"File system access failed, hexdump canceled\n");
return;
@ -48,7 +48,8 @@ void makeHexDump(bool base_2, uint16_t ram[])
for(int i=0; i<RAM_SIZE; i++) fprintBits(sizeof(uint16_t),ram+i,fp);
}
else
for(int i=1; i<=RAM_SIZE; i++) fprintf(fp,"%X\n",ram[i]);
{
for(int i=0; i<RAM_SIZE; i++) fprintf(fp,"%X\n",ram[i]);
}
fclose(fp);
}

13
src/main.c
View File

@ -1,7 +1,7 @@
#include "toy.h"
#include "./debug/debug.h"
#include<assert.h>
#include <assert.h>
#ifndef NDEBUG
#define DEBUG
@ -14,12 +14,12 @@ int main(int argc, char *argv[])
uint16_t ir=0; //Instruction Register
uint8_t op_code; //CPU Operation Code
uint16_t pc = 0; //Program Counter
int data_addr=0; //Adress of the 2nd operator (1. is ACCU)
int data_addr=0; //Adress of the 2nd operand (1. is ACCU)
int quit='n'; //Helper for program-flow exit (not part of CPU)
bool run = true; //CPU halt and reset.(make better a coredamp befor)
printf("\n+++++++++++++++++++++++++++++++++++++++++++++++\n+Boot: "CPU_TYPE
" wite %zu x %zu Bit RAM.+\n+++++++++++++++++++++++++++++++++++++++++++++++\n\n"
" with %zu x %zu Bit RAM.+\n+++++++++++++++++++++++++++++++++++++++++++++++\n\n"
,(sizeof(ram)/sizeof(ram[0])),sizeof(ram[0])*8);
if(initialise_ram(ram,argc,argv)==-1) return 1; //load data from command line into RAM
@ -41,9 +41,10 @@ int main(int argc, char *argv[])
//CPU control flow
if(execute(op_code,data_addr,ram)) //EXECUTE instruction, jump if ALU says
pc=find_data(ram[pc]);
pc=find_data(ir);
else pc++;
if(pc>4095) pc = pc % 4096; //TOY_CPU can only address 12 Bit
if(pc>=RAM_SIZE) pc %= RAM_SIZE; //TOY_CPU can only address 12 Bit
//Handele user output
printf("PROGRAM COUNTER: %" PRIu16 "\n",pc);
@ -57,7 +58,7 @@ int main(int argc, char *argv[])
else if(quit == 'q')
{
run = false;
printf("\nThis is an interpreter for the Koopman_TOY_CPU by\n"
printf("\nThis is an interpreter for the "CPU_TYPE" by\n"
"\tmichael.krause@uni-leipzig.de\n\n");
}
}

3
src/toy.c
View File

@ -64,7 +64,7 @@ int initialise_ram(uint16_t *ram, int argc, char **argv )
return -1;
}
if(!(fp=fopen(argv[1],"rb")))
if(NULL==(fp=fopen(argv[1],"r")))
{
fprintf(stderr,"%s","open input stream fault !\n");
return -1;
@ -81,6 +81,7 @@ int initialise_ram(uint16_t *ram, int argc, char **argv )
if(tempS[i]!='1' && tempS[i]!='0' && i<CPU_WORD_SIZE)
{
fprintf(stderr,"%s","input file corrupted\n");
fclose(fp);
return -1;
}
}