jusax23/raspberry-pi-pico-machine-code-emulator
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Initial Commit
2022-05-15 22:32:35 +02:00
#define pram_length 65536
#define program_length 65536
//#define s_debug
byte pram[pram_length];
byte prog[program_length];
uint16_t pcounter = 0;
uint16_t pstackpointer = pram_length-1;
uint16_t pframepointer = pram_length-1;
uint16_t pstackmax = pram_length*0.5;
uint32_t AReg;
uint32_t BReg;
uint32_t CReg;
uint32_t XReg;
bool equalFlag;
bool biggerFlag;
bool smalerFlag;
bool doExecute = false;
void setup() {
Serial.begin(115200);
pinMode(25, OUTPUT);
}
String b16 = "0123456789abcdef";
void loop() {
while (true){
while(Serial.available()){
String c = Serial.readStringUntil('\n');
if (c == "start")doExecute = true;
else if (c == "stop")doExecute = false;
else if (c == "test"){
for(int i = 0; i < 115; i++) {
Serial.println(prog[i]);
}
Serial.println(pcounter);
}
else if (c == "clear"){
pcounter = 0;
pstackpointer = pram_length-1;
pstackmax = pram_length*0.5;
AReg = 0;
BReg = 0;
CReg = 0;
XReg = 0;
equalFlag = false;
biggerFlag = false;
smalerFlag = false;
for (int i = 0; i < pram_length; i++) {
pram[i] = 0;
}
}
else{
for (int i = 0; i < c.length()-1; i=i+2) {
prog[i/2] = b16.indexOf(c[i])*16+b16.indexOf(c[i+1]);
}
}
}
if(doExecute){
digitalWrite(25, true);
#ifdef s_debug
Serial.print("Line: ");
Serial.print(pcounter);
Serial.print(" > ");
Serial.print(prog[pcounter]);
Serial.print(" > ");
Serial.print(pram[65528]);
Serial.print(" > ");
Serial.print(pstackpointer);
Serial.println(" ... ");
#endif
execute();
#ifdef s_debug
Serial.print(" ... ");
Serial.print(pram[65528]);
Serial.print(" > ");
Serial.println("done");
#endif
}else{
digitalWrite(25, false);
}
}
//delay(1);
}
void execute(){
byte cmd = prog[pcounter++];
switch ((int)cmd){
case 0:{
__asm__("nop");
}break;
case 1:{ // LDA
byte s = prog[pcounter++];
byte n = min(s&0xf,4);
unsigned short data = prog[pcounter++]<<8;
data += prog[pcounter++];
unsigned short addr = ((s&0xf0)!=0)?max(pframepointer+1-data-n,pstackpointer):data;
/*Serial.print("LDA");
Serial.print(s);
Serial.print(">");
Serial.print(s&0xf0);
Serial.print(">");
Serial.print((s&0xf0)!=0);
Serial.print(">");
Serial.print(max(pframepointer+1-data-n,pstackpointer));
Serial.print(">");
Serial.print(pframepointer-data-n);
Serial.print(">");
Serial.println(addr);*/
AReg = 0;
for (byte i = 0; i < n; i++) {
AReg += pram[addr+i]<<(i*8);
}
}break;
case 2:{ // LDB
byte n = min(prog[pcounter++],4);
unsigned short data = prog[pcounter++]<<8;
data += prog[pcounter++];
BReg = 0;
for (byte i = 0; i < n; i++) {
BReg += pram[data+i]<<(i*8);
}
}break;
case 3:{ // LDC
byte n = min(prog[pcounter++],4);
unsigned short data = prog[pcounter++]<<8;
data += prog[pcounter++];
CReg = 0;
for (byte i = 0; i < n; i++) {
CReg += pram[data+i]<<(i*8);
}
}break;
case 4:{ // LDX
byte n = min(prog[pcounter++],4);
unsigned short data = prog[pcounter++]<<8;
data += prog[pcounter++];
XReg = 0;
for (byte i = 0; i < n; i++) {
XReg += pram[data+i]<<(i*8);
}
}break;
case 5:{ // LOA
byte n = min(prog[pcounter++],4);
unsigned short data = prog[pcounter++]<<8;
data += prog[pcounter++];
data += XReg*n;
AReg = 0;
for (byte i = 0; i < n; i++) {
AReg += pram[data+i]<<(i*8);
}
}break;
case 6:{ // LOB
byte n = min(prog[pcounter++],4);
unsigned short data = prog[pcounter++]<<8;
data += prog[pcounter++];
data += XReg*n;
BReg = 0;
for (byte i = 0; i < n; i++) {
BReg += pram[data+i]<<(i*8);
}
}break;
case 7:{ // LOC
byte n = min(prog[pcounter++],4);
unsigned short data = prog[pcounter++]<<8;
data += prog[pcounter++];
data += XReg*n;
CReg = 0;
for (byte i = 0; i < n; i++) {
CReg += pram[data+i]<<(i*8);
}
}break;
case 8:{ // STA
byte s = prog[pcounter++];
byte n = min(s&0xf,4);
unsigned short data = prog[pcounter++]<<8;
data += prog[pcounter++];
unsigned short addr = ((s&0xf0)!=0)?max(pframepointer+1-data-n,pstackpointer):data;
/*Serial.print("STA");
Serial.print(s);
Serial.print(">");
Serial.print(s&0xf0);
Serial.print(">");
Serial.print((s&0xf0)!=0);
Serial.print(">");
Serial.print(max(pframepointer+1-data-n,pstackpointer));
Serial.print(">");
Serial.println(addr);*/
for (byte i = 0; i < n; i++) {
pram[addr+i] = (AReg>>(i*8))&0xff;
}
}break;
case 9:{ // STB
byte n = min(prog[pcounter++],4);
unsigned short data = prog[pcounter++]<<8;
data += prog[pcounter++];
for (byte i = 0; i < n; i++) {
pram[data+i] = (BReg>>(i*8))&0xff;
}
}break;
case 10:{ // STC
byte n = min(prog[pcounter++],4);
unsigned short data = prog[pcounter++]<<8;
data += prog[pcounter++];
for (byte i = 0; i < n; i++) {
pram[data+i] = (CReg>>(i*8))&0xff;
}
}break;
case 11:{ // STX
byte n = min(prog[pcounter++],4);
unsigned short data = prog[pcounter++]<<8;
data += prog[pcounter++];
for (byte i = 0; i < n; i++) {
pram[data+i] = (XReg>>(i*8))&0xff;
}
}break;
case 12:{ // SOA
byte n = min(prog[pcounter++],4);
unsigned short data = prog[pcounter++]<<8;
data += prog[pcounter++];
data += XReg*n;
for (byte i = 0; i < n; i++) {
pram[data+i] = (AReg>>(i*8))&0xff;
}
}break;
case 13:{ // SOB
byte n = min(prog[pcounter++],4);
unsigned short data = prog[pcounter++]<<8;
data += prog[pcounter++];
data += XReg*n;
for (byte i = 0; i < n; i++) {
pram[data+i] = (BReg>>(i*8))&0xff;
}
}break;
case 14:{ // SOC
byte n = min(prog[pcounter++],4);
unsigned short data = prog[pcounter++]<<8;
data += prog[pcounter++];
data += XReg*n;
for (byte i = 0; i < n; i++) {
pram[data+i] = (CReg>>(i*8))&0xff;
}
}break;
case 15:{ // LIA
uint32_t data = prog[pcounter++]<<24;
data += prog[pcounter++]<<16;
data += prog[pcounter++]<<8;
data += prog[pcounter++];
AReg = data;
}break;
case 16:{ // LIB
uint32_t data = prog[pcounter++]<<24;
data += prog[pcounter++]<<16;
data += prog[pcounter++]<<8;
data += prog[pcounter++];
BReg = data;
}break;
case 17:{ // LIC
uint32_t data = prog[pcounter++]<<24;
data += prog[pcounter++]<<16;
data += prog[pcounter++]<<8;
data += prog[pcounter++];
CReg = data;
}break;
case 18:{ // LIX
uint32_t data = prog[pcounter++]<<24;
data += prog[pcounter++]<<16;
data += prog[pcounter++]<<8;
data += prog[pcounter++];
XReg = data;
}break;
case 19:{ // CAB
BReg = AReg;
}break;
case 20:{ // CBC
CReg = BReg;
}break;
case 21:{ // CCA
AReg = CReg;
}break;
case 22:{ // CAC
CReg = AReg;
}break;
case 23:{ // CCB
BReg = CReg;
}break;
case 24:{ // CBA
AReg = BReg;
}break;
case 25:{ // CAX
XReg = AReg;
}break;
case 26:{ // CBX
XReg = BReg;
}break;
case 27:{ // CCX
XReg = CReg;
}break;
case 28:{ // CXA
AReg = XReg;
}break;
case 29:{ // CXB
BReg = XReg;
}break;
case 30:{ // CXC
CReg = XReg;
}break;
//Types unsigned 0: uint;
// signed 1: int; 2: float
case 31: { //CVA
byte data1 = prog[pcounter++];
byte data2 = prog[pcounter++];
if(data2 == 2){
float o = 0;
if(data1 == 1){o= * ( int32_t * ) &AReg;}
else if(data1 == 2){o=AReg;}
else if(data1 == 2){o= * ( float * ) &AReg;}
AReg = * (uint32_t * ) &o;
}else if(data2 == 1){
int32_t o = 0;
if(data1 == 1){o= * ( int32_t * ) &AReg;}
else if(data1 == 0){o=AReg;}
else if(data1 == 2){o= * ( float * ) &AReg;}
AReg = * (uint32_t * ) &o;
}else {
uint32_t o = 0;
if(data1 == 1){o= * ( int32_t * ) &AReg;}
else if(data1 == 0){o=AReg;}
else if(data1 == 2){o= * ( float * ) &AReg;}
AReg = * (uint32_t * ) &o;
}
}break;
case 32:{ //CVB
byte data1 = prog[pcounter++];
byte data2 = prog[pcounter++];
if(data2 == 2){
float o = 0;
if(data1 == 1){o= * ( int32_t * ) &BReg;}
else if(data1 == 0){o=BReg;}
else if(data1 == 2){o= * ( float * ) &BReg;}
BReg = * (uint32_t * ) &o;
}else if(data2 == 1){
int32_t o = 0;
if(data1 == 1){o= * ( int32_t * ) &BReg;}
else if(data1 == 0){o=BReg;}
else if(data1 == 2){o= * ( float * ) &BReg;}
BReg = * (uint32_t * ) &o;
}else {
uint32_t o = 0;
if(data1 == 1){o= * ( int32_t * ) &BReg;}
else if(data1 == 0){o=BReg;}
else if(data1 == 2){o= * ( float * ) &BReg;}
BReg = * (uint32_t * ) &o;
}
}break;
case 33:{ //CVC
byte data1 = prog[pcounter++];
byte data2 = prog[pcounter++];
if(data2 == 2){
float o = 0;
if(data1 == 1){o= * ( int32_t * ) &CReg;}
else if(data1 == 0){o=CReg;}
else if(data1 == 2){o= * ( float * ) &CReg;}
CReg = * (uint32_t * ) &o;
}else if(data2 == 1){
int32_t o = 0;
if(data1 == 1){o= * ( int32_t * ) &CReg;}
else if(data1 == 0){o=CReg;}
else if(data1 == 2){o= * ( float * ) &CReg;}
CReg = * (uint32_t * ) &o;
}else {
uint32_t o = 0;
if(data1 == 1){o= * ( int32_t * ) &CReg;}
else if(data1 == 0){o=CReg;}
else if(data1 == 2){o= * ( float * ) &CReg;}
CReg = * (uint32_t * ) &o;
}
}break;
case 34:{ // ADD
byte data = prog[pcounter++];
byte data1 = prog[pcounter++];
byte data2 = prog[pcounter++];
if(data == 2){
float o = 0;
if(data1 == 1){o= * ( int32_t * ) &AReg;}
else if(data1 == 0){o=AReg;}
else if(data1 == 2){o= * ( float * ) &AReg;}
if(data2 == 1){o+= * ( int32_t * ) &BReg;}
else if(data2 == 0){o+=BReg;}
else if(data2 == 2){o+= * ( float * ) &BReg;}
AReg = * (uint32_t * ) &o;
}else if(data == 1){
int32_t o = 0;
if(data1 == 1){o= * ( int32_t * ) &AReg;}
else if(data1 == 0){o=AReg;}
else if(data1 == 2){o= * ( float * ) &AReg;}
if(data2 == 1){o+= * ( int32_t * ) &BReg;}
else if(data2 == 0){o+=BReg;}
else if(data2 == 2){o+= * ( float * ) &BReg;}
AReg = * (uint32_t * ) &o;
}else {
uint32_t o = 0;
if(data1 == 1){o= * ( int32_t * ) &AReg;}
else if(data1 == 0){o=AReg;}
else if(data1 == 2){o= * ( float * ) &AReg;}
if(data2 == 1){o+= * ( int32_t * ) &BReg;}
else if(data2 == 0){o+=BReg;}
else if(data2 == 2){o+= * ( float * ) &BReg;}
AReg = * (uint32_t * ) &o;
}
}break;
case 35:{ // SUB
byte data = prog[pcounter++];
byte data1 = prog[pcounter++];
byte data2 = prog[pcounter++];
if(data == 2){
float o = 0;
if(data1 == 1){o= * ( int32_t * ) &AReg;}
else if(data1 == 0){o=AReg;}
else if(data1 == 2){o= * ( float * ) &AReg;}
if(data2 == 1){o-= * ( int32_t * ) &BReg;}
else if(data2 == 0){o-=BReg;}
else if(data2 == 2){o-= * ( float * ) &BReg;}
AReg = * (uint32_t * ) &o;
}else if(data == 1){
int32_t o = 0;
if(data1 == 1){o= * ( int32_t * ) &AReg;}
else if(data1 == 0){o=AReg;}
else if(data1 == 2){o= * ( float * ) &AReg;}
if(data2 == 1){o-= * ( int32_t * ) &BReg;}
else if(data2 == 0){o-=BReg;}
else if(data2 == 2){o-= * ( float * ) &BReg;}
AReg = * (uint32_t * ) &o;
}else {
uint32_t o = 0;
if(data1 == 1){o= * ( int32_t * ) &AReg;}
else if(data1 == 0){o=AReg;}
else if(data1 == 2){o= * ( float * ) &AReg;}
if(data2 == 1){o-= * ( int32_t * ) &BReg;}
else if(data2 == 0){o-=BReg;}
else if(data2 == 2){o-= * ( float * ) &BReg;}
AReg = * (uint32_t * ) &o;
}
}break;
case 36:{ //MUL
byte data = prog[pcounter++];
byte data1 = prog[pcounter++];
byte data2 = prog[pcounter++];
if(data == 2){
float o = 1;
if(data1 == 1){o= * ( int32_t * ) &AReg;}
else if(data1 == 0){o=AReg;}
else if(data1 == 2){o= * ( float * ) &AReg;}
if(data2 == 1){o*= * ( int32_t * ) &BReg;}
else if(data2 == 0){o*=BReg;}
else if(data2 == 2){o*= * ( float * ) &BReg;}
AReg = * (uint32_t * ) &o;
}else if(data == 1){
int32_t o = 1;
if(data1 == 1){o= * ( int32_t * ) &AReg;}
else if(data1 == 0){o=AReg;}
else if(data1 == 2){o= * ( float * ) &AReg;}
if(data2 == 1){o*= * ( int32_t * ) &BReg;}
else if(data2 == 0){o*=BReg;}
else if(data2 == 2){o*= * ( float * ) &BReg;}
AReg = * (uint32_t * ) &o;
}else {
uint32_t o = 1;
if(data1 == 1){o= * ( int32_t * ) &AReg;}
else if(data1 == 0){o=AReg;}
else if(data1 == 2){o= * ( float * ) &AReg;}
if(data2 == 1){o*= * ( int32_t * ) &BReg;}
else if(data2 == 0){o*=BReg;}
else if(data2 == 2){o*= * ( float * ) &BReg;}
AReg = * (uint32_t * ) &o;
}
}break;
case 37:{ //DIV
byte data = prog[pcounter++];
byte data1 = prog[pcounter++];
byte data2 = prog[pcounter++];
if(data == 2){
float o = 1;
if(data1 == 1){o= * ( int32_t * ) &AReg;}
else if(data1 == 0){o=AReg;}
else if(data1 == 2){o= * ( float * ) &AReg;}
if(data2 == 1){o/= * ( int32_t * ) &BReg;}
else if(data2 == 0){o/=BReg;}
else if(data2 == 2){o/= * ( float * ) &BReg;}
AReg = * (uint32_t * ) &o;
}else if(data == 1){
int32_t o = 1;
if(data1 == 1){o= * ( int32_t * ) &AReg;}
else if(data1 == 0){o=AReg;}
else if(data1 == 2){o= * ( float * ) &AReg;}
if(data2 == 1){o/= * ( int32_t * ) &BReg;}
else if(data2 == 0){o/=BReg;}
else if(data2 == 2){o/= * ( float * ) &BReg;}
AReg = * (uint32_t * ) &o;
}else{
uint32_t o = 1;
if(data1 == 1){o= * ( int32_t * ) &AReg;}
else if(data1 == 0){o=AReg;}
else if(data1 == 2){o= * ( float * ) &AReg;}
if(data2 == 1){o/= * ( int32_t * ) &BReg;}
else if(data2 == 0){o/=BReg;}
else if(data2 == 2){o/= * ( float * ) &BReg;}
AReg = * (uint32_t * ) &o;
}
}break;
case 38:{ //MOD
byte data = prog[pcounter++];
byte data1 = prog[pcounter++];
byte data2 = prog[pcounter++];
if(data == 2){
uint32_t o = 1;
if(data1 == 1){o= * ( int32_t * ) &AReg;}
else if(data1 == 0){o=AReg;}
if(data2 == 1){o = o % (* ( int32_t * ) &BReg);}
else if(data2 == 0){o=o%BReg;}
AReg = * (uint32_t * ) &o;
}else{
int32_t o = 1;
if(data1 == 1){o= * ( int32_t * ) &AReg;}
else if(data1 == 0){o=AReg;}
if(data2 == 1){o = o % (* ( int32_t * ) &BReg);}
else if(data2 == 0){o=o%BReg;}
AReg = * (uint32_t * ) &o;
}
}break;
case 39:{ // POW
byte data = prog[pcounter++];
byte data1 = prog[pcounter++];
byte data2 = prog[pcounter++];
if(data == 2){
float o = 0;
if(data1 == 1){o= * ( int32_t * ) &AReg;}
else if(data1 == 0){o=AReg;}
else if(data1 == 2){o= * ( float * ) &AReg;}
if(data2 == 1){o=pow(o, * ( int32_t * ) &BReg);}
else if(data2 == 0){o=pow(o, BReg);}
else if(data2 == 2){o=pow(o, * ( float * ) &BReg);}
AReg = * (uint32_t * ) &o;
}else if(data == 1){
int32_t o = 0;
if(data1 == 1){o= * ( int32_t * ) &AReg;}
else if(data1 == 0){o=AReg;}
else if(data1 == 2){o= * ( float * ) &AReg;}
if(data2 == 1){o=pow(o, * ( int32_t * ) &BReg);}
else if(data2 == 0){o=pow(o, BReg);}
else if(data2 == 2){o=pow(o, * ( float * ) &BReg);}
AReg = * (uint32_t * ) &o;
}else {
uint32_t o = 0;
if(data1 == 1){o= * ( int32_t * ) &AReg;}
else if(data1 == 0){o=AReg;}
else if(data1 == 2){o= * ( float * ) &AReg;}
if(data2 == 1){o=pow(o, * ( int32_t * ) &BReg);}
else if(data2 == 0){o=pow(o, BReg);}
else if(data2 == 2){o=pow(o, * ( float * ) &BReg);}
AReg = * (uint32_t * ) &o;
}
}break;
case 40:{ // ROT
byte data = prog[pcounter++];
byte data1 = prog[pcounter++];
byte data2 = prog[pcounter++];
if(data == 2){
float o = 0;
if(data1 == 1){o= * ( int32_t * ) &AReg;}
else if(data1 == 0){o=AReg;}
else if(data1 == 2){o= * ( float * ) &AReg;}
if(data2 == 1){o=pow(o,1.0/ (* ( int32_t * ) &BReg));}
else if(data2 == 0){o=pow(o, 1.0/BReg);}
else if(data2 == 2){o=pow(o,1.0/( * ( float * ) &BReg));}
AReg = * (uint32_t * ) &o;
}else if(data == 1){
int32_t o = 0;
if(data1 == 1){o= * ( int32_t * ) &AReg;}
else if(data1 == 0){o=AReg;}
else if(data1 == 2){o= * ( float * ) &AReg;}
if(data2 == 1){o=pow(o,1.0/ (* ( int32_t * ) &BReg));}
else if(data2 == 0){o=pow(o, 1.0/BReg);}
else if(data2 == 2){o=pow(o,1.0/( * ( float * ) &BReg));}
AReg = * (uint32_t * ) &o;
}else {
uint32_t o = 0;
if(data1 == 1){o= * ( int32_t * ) &AReg;}
else if(data1 == 0){o=AReg;}
else if(data1 == 2){o= * ( float * ) &AReg;}
if(data2 == 1){o=pow(o, * ( int32_t * ) &BReg);}
else if(data2 == 0){o=pow(o, BReg);}
else if(data2 == 2){o=pow(o, * ( float * ) &BReg);}
AReg = * (uint32_t * ) &o;
}
}break;
case 41:{ // LOG
byte data = prog[pcounter++];
byte data1 = prog[pcounter++];
if(data == 2){
float o = 0;
if(data1 == 1){o=log( * ( int32_t * ) &AReg);}
else if(data1 == 0){o=log(AReg);}
else if(data1 == 2){o= log(* ( float * ) &AReg);}
AReg = * (uint32_t * ) &o;
}else if(data == 1){
int32_t o = 0;
if(data1 == 1){o=log( * ( int32_t * ) &AReg);}
else if(data1 == 0){o=log(AReg);}
else if(data1 == 2){o= log(* ( float * ) &AReg);}
AReg = * (uint32_t * ) &o;
}else {
uint32_t o = 0;
if(data1 == 1){o=log( * ( int32_t * ) &AReg);}
else if(data1 == 0){o=log(AReg);}
else if(data1 == 2){o= log(* ( float * ) &AReg);}
AReg = * (uint32_t * ) &o;
}
}break;
case 42:{ // SR
AReg = AReg >> BReg;
}break;
case 43:{ // SL
AReg = AReg << BReg;
}break;
case 44:{ // INC
byte data1 = prog[pcounter++];
if(data1==0||data1==1){
AReg++;
}else if(data1==2){
float o = * (float *) &AReg;
o++;
AReg = * (uint32_t * ) &o;
}
}break;
case 45:{ // DEC
byte data1 = prog[pcounter++];
if(data1==0||data1==1){
AReg--;
}else if(data1==2){
float o = * (float *) &AReg;
o--;
AReg = * (uint32_t * ) &o;
}
}break;
case 46:{ // BWO
AReg = AReg | BReg;
}break;
case 47:{ // BWA
AReg = AReg & BReg;
}break;
case 48:{ // BWX
AReg = AReg ^ BReg;
}break;
case 49:{ //CMP
byte data1 = prog[pcounter++];
byte data2 = prog[pcounter++];
double o = 0;
if(data1 == 1){o= * ( int32_t * ) &AReg;}
else if(data1 == 0){o=AReg;}
else if(data1 == 2){o= * ( float * ) &AReg;}
if(data2 == 1){o-= * ( int32_t * ) &BReg;}
else if(data2 == 0){o-=BReg;}
else if(data2 == 2){o-= * ( float * ) &BReg;}
equalFlag = (fabs(o) < 0.00005f);
biggerFlag = (o >= 0.00005f);
smalerFlag = (o <= -0.00005f);
}break;
case 50:{ //JMP
uint16_t data = prog[pcounter++]<<8;
data += prog[pcounter++];
pcounter = data;
}break;
case 51:{ //JE
uint16_t data = prog[pcounter++]<<8;
data += prog[pcounter++];
if(equalFlag){
pcounter = data;
}
}break;
case 52:{ //JNE
uint16_t data = prog[pcounter++]<<8;
data += prog[pcounter++];
if(!equalFlag){
pcounter = data;
}
}break;
case 53:{ //JB
uint16_t data = prog[pcounter++]<<8;
data += prog[pcounter++];
if(biggerFlag){
pcounter = data;
}
}break;
case 54:{ //JNB
uint16_t data = prog[pcounter++]<<8;
data += prog[pcounter++];
if(!biggerFlag){
pcounter = data;
}
}break;
case 55:{ //JS
uint16_t data = prog[pcounter++]<<8;
data += prog[pcounter++];
if(smalerFlag){
pcounter = data;
}
}break;
case 56:{ //JNS
uint16_t data = prog[pcounter++]<<8;
data += prog[pcounter++];
if(!smalerFlag){
pcounter = data;
}
}break;
case 57:{ //PSH
int data = max(min(prog[pcounter++],255),1);
for (int i = data-1; i >= 0; i--) {
if(i<=4){
pram[pstackpointer--] = (AReg >> (i*8))&0xff;
}else{
pram[pstackpointer--] = 0;
}
}
if(pram_length-pstackpointer>pstackmax){
doExecute = false;
Serial.println("Stackoverflow: PSH");
}
}break;
case 58:{ //PUL
int data = max(min(prog[pcounter++]+0,255),1);
AReg = 0;
for (int i = 0; i < data; i++) {
if(i<=4){
AReg+=pram[++pstackpointer]<<(i*8);
}else{
pstackpointer++;
}
}
if(pram_length-pstackpointer>pstackmax){
doExecute = false;
Serial.println("Stackunderflow: PUL");
}
}break;
case 59:{ //JSR
uint16_t data = prog[pcounter++]<<8;
data += prog[pcounter++];
pram[pstackpointer--] = (pframepointer)&0xff;
pram[pstackpointer--] = (pframepointer>>8)&0xff;
pram[pstackpointer--] = (pcounter)&0xff;
pram[pstackpointer--] = (pcounter>>8)&0xff;
pframepointer = pstackpointer;
if(pram_length-pstackpointer>pstackmax){
doExecute = false;
Serial.println("Stackoverflow: JSR");
}
pcounter = data;
}break;
case 60:{ //JSA
uint16_t data = AReg;
pram[pstackpointer--] = (pframepointer)&0xff;
pram[pstackpointer--] = (pframepointer>>8)&0xff;
pram[pstackpointer--] = (pcounter)&0xff;
pram[pstackpointer--] = (pcounter>>8)&0xff;
pframepointer = pstackpointer;
if(pram_length-pstackpointer>pstackmax){
doExecute = false;
Serial.println("Stackoverflow: JSA");
}
pcounter = data;
}break;
case 61:{ //RSR
pcounter = 0;
pstackpointer = pframepointer;
pcounter = pram[++pstackpointer]<<8;
pcounter += pram[++pstackpointer];
pframepointer = pram[++pstackpointer]<<8;
pframepointer += pram[++pstackpointer];
if(pram_length-pstackpointer>pstackmax){
doExecute = false;
Serial.println("Stackunderflow: RSR");
}
}break;
case 252:{ //IN
}break;
case 253:{ //OUT
byte data = prog[pcounter++];
if(data==1) Serial.println(* (int *) &AReg);
if(data==0) Serial.println(AReg);
if(data==2) Serial.println(* (float *) &AReg);
}break;
case 254:{ //SHS Set Heap Size
unsigned short data = prog[pcounter++]<<8;
data += prog[pcounter++];
pstackmax = pram_length-data;
if(pram_length-pstackpointer>pstackmax){
doExecute = false;
Serial.println("Stackoverflow: SHS");
}
}break;
case 255:{ //HLT bzw. exit
pcounter = 0;
doExecute = false;
}break;
}
}
Reference in a new issue Copy permalink