| Line 28... |
Line 28... |
static unsigned int memSize;
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static unsigned int memSize;
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static FILE *romImage;
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static FILE *romImage;
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static unsigned int romSize;
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static unsigned int romSize;
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static FILE *progImage;
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static FILE *progImage;
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static unsigned int progSize;
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static unsigned int progSize;
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static unsigned int progAddr;
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Word memoryReadWord(Word pAddr) {
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Word memoryReadWord(Word pAddr) {
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Word data;
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Word data;
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| Line 206... |
Line 207... |
mem[i] = rand();
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mem[i] = rand();
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}
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}
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cPrintf("%6d MB RAM installed", memSize / M);
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cPrintf("%6d MB RAM installed", memSize / M);
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if (progImage != NULL) {
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if (progImage != NULL) {
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fseek(progImage, 0, SEEK_SET);
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fseek(progImage, 0, SEEK_SET);
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if (fread(mem, progSize, 1, progImage) != 1) {
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if (fread(mem + progAddr, progSize, 1, progImage) != 1) {
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error("cannot read program image file");
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error("cannot read program image file");
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}
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}
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cPrintf(", %d bytes loaded", progSize);
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cPrintf(", %d bytes loaded", progSize);
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}
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}
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cPrintf(".\n");
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cPrintf(".\n");
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| Line 228... |
Line 229... |
}
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}
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void memoryInit(unsigned int memorySize,
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void memoryInit(unsigned int memorySize,
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char *progImageName,
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char *progImageName,
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unsigned int loadAddr,
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char *romImageName) {
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char *romImageName) {
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/* allocate RAM */
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/* allocate RAM */
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memSize = memorySize;
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memSize = memorySize;
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mem = malloc(memSize);
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mem = malloc(memSize);
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if (mem == NULL) {
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if (mem == NULL) {
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| Line 247... |
Line 249... |
if (progImage == NULL) {
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if (progImage == NULL) {
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error("cannot open program file '%s'", progImageName);
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error("cannot open program file '%s'", progImageName);
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}
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}
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fseek(progImage, 0, SEEK_END);
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fseek(progImage, 0, SEEK_END);
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progSize = ftell(progImage);
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progSize = ftell(progImage);
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if (progSize > memSize) {
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progAddr = loadAddr;
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error("program file too big");
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if (progAddr + progSize > memSize) {
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error("program file or load address too big");
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}
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}
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/* do actual loading of image in memoryReset() */
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/* do actual loading of image in memoryReset() */
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}
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}
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/* allocate ROM */
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/* allocate ROM */
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rom = malloc(ROM_SIZE);
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rom = malloc(ROM_SIZE);
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