- [NEW] Port function pointers now also receive port number as uint16_t

- [NEW] Implemented keyboard response to IN(0xfe), not working yet, DKW

z80.cpp

@@ -8,8 +8,8 @@ namespace z80
     static uint8_t *memory = nullptr;
     static uint32_t t = 0;
 
-    int (*in_ports[256])();
-    void (*out_ports[256])(int);
+    int (*in_ports[256])(int);
+    void (*out_ports[256])(int, int);
 
     #define _rM16(a) (uint16_t*)&memory[a]
     #define rM16(a) *_rM16(a)
@@ -811,28 +811,33 @@ namespace z80
         }
     }
 
-    const uint8_t IN(int port = 256)
+    const uint8_t IN(int port = 0x10000)
     {
         t+=4;
-        if (port == 256) {
-            port = rC;
+        if (port == 0x10000) {
+            port = rBC;
             // [TODO] set flags acordingly
         } else {
+            port = (rA<<8) | port;
             // don't touch flags
         }
-        if (in_ports[port])
-            return (uint8_t)in_ports[port]();
+        if (in_ports[port]) {
+            const uint8_t val = (uint8_t)in_ports[port&0xff](port);
+            if (val != 0xff)
+                return val;
             else
+                return 0xff;
+        } else
             return 0x00;
     }
 
-    void OUT(uint8_t val, int port = 256)
+    void OUT(uint8_t val, int port = 0x10000)
     {
         t+=4;
-        if (port == 256) {
-            port = rC;
+        if (port == 0x10000) {
+            port = rBC;
         }
-        if (out_ports[port]) out_ports[port](val);
+        if (out_ports[port&0xff]) out_ports[port&0xff](port, val);
     }
 
     void INI()
@@ -931,7 +936,7 @@ namespace z80
     void IY_INSTRUCTIONS();
     void IY_BIT_INSTRUCTIONS();
 
-    void connect_port(int num, int (*in_ptr)(), void (*out_ptr)(int))
+    void connect_port(int num, int (*in_ptr)(int), void (*out_ptr)(int,int))
     {
         if (in_ptr) in_ports[num] = in_ptr;
         if (out_ptr) out_ports[num] = out_ptr;

z80.h

@@ -5,7 +5,7 @@
 namespace z80
 {
     void reset(uint8_t* mem);
-    void connect_port(int num, int (*in_ptr)(), void (*out_ptr)(int));
+    void connect_port(int num, int (*in_ptr)(int), void (*out_ptr)(int,int));
     void interrupt();
     
     uint32_t step();

zx_ula.cpp

@@ -1,4 +1,5 @@
 #include "zx_ula.h"
+#include <SDL2/SDL.h>
 
 namespace zx_ula
 {
@@ -6,12 +7,87 @@ namespace zx_ula
     static uint8_t ear = 0;
     static uint8_t mic = 0;
 
-    int port_in()
+    int port_in(int port)
     {
-        return 0;
+        const uint8_t *keys = SDL_GetKeyboardState(NULL);
+        const uint8_t h_addr = (port>>8);
+        uint8_t result = 0xff;
+        if (!(h_addr & ~0xfe))
+        {
+            result &= ~( 
+                        keys[SDL_SCANCODE_LSHIFT]*0xef +
+                        keys[SDL_SCANCODE_Z]*0xf7 +
+                        keys[SDL_SCANCODE_X]*0xfb +
+                        keys[SDL_SCANCODE_C]*0xfd +
+                        keys[SDL_SCANCODE_V]*0xfe );
+        }
+        if (!(h_addr & ~0xfd))
+        {
+            result &= ~( 
+                        keys[SDL_SCANCODE_A]*0xef +
+                        keys[SDL_SCANCODE_S]*0xf7 +
+                        keys[SDL_SCANCODE_D]*0xfb +
+                        keys[SDL_SCANCODE_F]*0xfd +
+                        keys[SDL_SCANCODE_G]*0xfe );
+        }
+        if (!(h_addr & ~0xfb))
+        {
+            result &= ~( 
+                        keys[SDL_SCANCODE_Q]*0xef +
+                        keys[SDL_SCANCODE_W]*0xf7 +
+                        keys[SDL_SCANCODE_E]*0xfb +
+                        keys[SDL_SCANCODE_R]*0xfd +
+                        keys[SDL_SCANCODE_T]*0xfe );
+        }
+        if (!(h_addr & ~0xf7))
+        {
+            result &= ~( 
+                        keys[SDL_SCANCODE_1]*0xef +
+                        keys[SDL_SCANCODE_2]*0xf7 +
+                        keys[SDL_SCANCODE_3]*0xfb +
+                        keys[SDL_SCANCODE_4]*0xfd +
+                        keys[SDL_SCANCODE_5]*0xfe );
+        }
+        if (!(h_addr & ~0xef))
+        {
+            result &= ~( 
+                        keys[SDL_SCANCODE_0]*0xef +
+                        keys[SDL_SCANCODE_9]*0xf7 +
+                        keys[SDL_SCANCODE_8]*0xfb +
+                        keys[SDL_SCANCODE_7]*0xfd +
+                        keys[SDL_SCANCODE_6]*0xfe );
+        }
+        if (!(h_addr & ~0xdf))
+        {
+            result &= ~( 
+                        keys[SDL_SCANCODE_P]*0xef +
+                        keys[SDL_SCANCODE_O]*0xf7 +
+                        keys[SDL_SCANCODE_I]*0xfb +
+                        keys[SDL_SCANCODE_U]*0xfd +
+                        keys[SDL_SCANCODE_Y]*0xfe );
+        }
+        if (!(h_addr & ~0xbf))
+        {
+            result &= ~( 
+                        keys[SDL_SCANCODE_RETURN]*0xef +
+                        keys[SDL_SCANCODE_L]*0xf7 +
+                        keys[SDL_SCANCODE_K]*0xfb +
+                        keys[SDL_SCANCODE_J]*0xfd +
+                        keys[SDL_SCANCODE_H]*0xfe );
+        }
+        if (!(h_addr & ~0x7f))
+        {
+            result &= ~( 
+                        keys[SDL_SCANCODE_SPACE]*0xef +
+                        keys[SDL_SCANCODE_RSHIFT]*0xf7 +
+                        keys[SDL_SCANCODE_M]*0xfb +
+                        keys[SDL_SCANCODE_N]*0xfd +
+                        keys[SDL_SCANCODE_B]*0xfe );
+        }
+        return result;
     }
 
-    void port_out(int val)
+    void port_out(int port, int val)
     {
         border_color = val & 0x7;
         mic = (val>>3)&0x1;

zx_ula.h

@@ -4,8 +4,8 @@
 
 namespace zx_ula
 {
-    int port_in();
-    void port_out(int val);
+    int port_in(int port);
+    void port_out(int port, int val);
 
     uint8_t get_border_color();
 }