- [NEW] makefile més util

- [FIX] next (F11) no longer keeps breaking on current line
- [NEW] b alone sets breakpoint on current line
- [NEW] d alone clears breakpoint on current line
- [NEW] d all removes all breakpoints
- [FIX] IX bit & IY bit instruction visualization is fixed
- [FIX] RRD & RLD were swaped

Makefile

@@ -1,2 +1,8 @@
-default:
+compile:
 	g++ -g *.cpp -lSDL2 -o z80
+
+run: compile
+	./z80
+
+debug: compile
+	gdb z80

main.cpp

@@ -55,13 +55,12 @@ int main(int argc, char *argv[])
                         z80debug::refresh();
                         zxscreen::refresh();
                     } else if (e.key.keysym.scancode==SDL_SCANCODE_F11) {
-                        z80debug::next();
+                        t += z80debug::next();
-                        //t += z80::step();
                         fps=0;
                         fps_time = SDL_GetTicks();
                         zxscreen::refresh();
                     } else if (e.key.keysym.scancode==SDL_SCANCODE_F5) {
-                        z80::step();
+                        t += z80::step();
                         z80debug::cont();
                         fps=0;
                         fps_time = SDL_GetTicks();

z80.cpp

@@ -457,8 +457,8 @@ namespace z80
     {
         uint8_t a = rA;
         uint8_t hl = READ_MEM_8(rHL);
-        rA = (rA & 0xF0) | (hl >> 4);
+        rA = (rA & 0xF0) | (hl & 0x0F);
-        hl = (hl<<4) | (a & 0X0F);
+        hl = (hl >> 4) | (a << 4);
         WRITE_MEM_8(rHL, hl);
         KEEP_FLAGS(fC);
         FLAGS_SZXY(rA);
@@ -470,8 +470,8 @@ namespace z80
     {
         uint8_t a = rA;
         uint8_t hl = READ_MEM_8(rHL);
-        rA = (rA & 0xF0) | (hl & 0x0F);
+        rA = (rA & 0xF0) | (hl >> 4);
-        hl = (hl >> 4) | (a << 4);
+        hl = (hl << 4) | (a & 0x0F);
         WRITE_MEM_8(rHL, hl);
         KEEP_FLAGS(fC);
         FLAGS_SZXY(rA);
@@ -710,7 +710,7 @@ namespace z80
 
     static inline const uint8_t SLL(const uint8_t v)
     {
-        const uint8_t res = (v<<1) & 1;
+        const uint8_t res = (v<<1) | 1;
         rF=0;
         FLAGS_SZXY(res);
         if (v&0x80) SET_FLAGS(fC);

z80debug.cpp

@@ -365,6 +365,7 @@ namespace z80debug
             z80debug::refresh();
         } else if (strcmp(cmd, "b")==0 || strcmp(cmd, "break")==0) {
             getcmd();
+            if (cmd[0] == 0) { breakpoints[z80::getPC()]=1; return; }
             int address = getnum(cmd);
             if (address<0 || address>65536) { strcpy(console_error, "Illegal break address"); return; }
             getcmd();
@@ -384,6 +385,8 @@ namespace z80debug
             breakpoints[address] |= break_type;
         } else if (strcmp(cmd, "d")==0 || strcmp(cmd, "delete")==0) {
             getcmd();
+            if (strcmp(cmd, "all")==0) { for (int i=0;i<65536;++i) breakpoints[i]=0; return; }
+            if (cmd[0] == 0) { breakpoints[z80::getPC()]=0; return; }
             int address = getnum(cmd);
             if (address<0 || address>65536) { strcpy(console_error, "Illegal address"); return; }
             getcmd();
@@ -414,9 +417,11 @@ namespace z80debug
         return (breakpoints[address]&type);
     }
 
-    void next()
+    uint32_t next()
     {
         breakpoints[z80::getPC()+z80dis::getOpcodeSize(z80::getPC())] |= 8;
+        const uint32_t t = z80::step();
         cont();
+        return t;
     }
 }

z80debug.h

@@ -15,5 +15,5 @@ namespace z80debug
     void executeConsole();
 
     const bool isbreak(const uint16_t address, const uint8_t type=1);
-    void next();
+    uint32_t next();
 }

z80dis.cpp

@@ -118,7 +118,7 @@ namespace z80dis
             }
         }
         
-        if (strstr(base, "hhd")) {
+        if (strstr(buffer, "hhd")) {
             opcode_size+=1;
 
             strcpy(base, buffer);