[#211]

CIA Port A und B hinzugefuegt --> Write
ThKattanek · Aug 23, 2021 · 885bc04 · 885bc04
1 parent e02a9a0
commit 885bc04
Show file tree

Hide file tree

Showing 3 changed files with 145 additions and 6 deletions.
diff --git a/src/mos6526_class.h b/src/mos6526_class.h
@@ -19,7 +19,7 @@
 #include <cstring>
 #include <functional>
 
-#include "./mos6526_port.h"
+#include "./cia_port.h"
 #include "./structs.h"
 
 #define ClockCounterPAL 98438

diff --git a/src/mos8520_class.cpp b/src/mos8520_class.cpp
@@ -8,7 +8,7 @@
 // Dieser Sourcecode ist Copyright geschützt!   //
 // Geistiges Eigentum von Th.Kattanek           //
 //                                              //
-// Letzte Änderung am 21.08.2021                //
+// Letzte Änderung am 23.08.2021                //
 // www.emu64.de                                 //
 //                                              //
 //////////////////////////////////////////////////
@@ -26,23 +26,145 @@ MOS8520::~MOS8520()
 
 void MOS8520::Reset()
 {
+	for(int i=0;i<16;i++) io[i] = 0;
 
+	pa_latch = pb_latch = ddr_a = ddr_b = 0;
+	pa.SetOutput(pa_latch | ~ddr_a);
+	pb.SetOutput(pb_latch | ~ddr_b);
 }
 
 void MOS8520::OneZyklus()
 {
-
+	if(*reset == false)
+		Reset();
 }
 
 uint8_t MOS8520::ReadIO(uint16_t address)
 {
 	// Register 0 - 15
-	cout << "Read from MOS8520 IO-Address: " << std::hex << address << endl;
+	// cout << "Read from MOS8520 IO-Address: " << std::hex << address << endl;
+
+	switch (address & 0x0f)
+	{
+	case 0x00:		// PRA Peripheral Data Reg. A
+		break;
+
+	case 0x01:		// PRB Peripheral Data Reg. B
+		break;
+
+	case 0x02:		// DDRA Data Direction Reg. A
+		break;
+
+	case 0x03:		// DDRB Data Direction Reg. B
+		break;
+
+	case 0x04:		// TA LO Timer A Low Register
+		break;
+
+	case 0x05:		// TA HI Timer A High Register
+		break;
+
+	case 0x06:		// TB LO Timer B Low Register
+		break;
+
+	case 0x07:		// TB HI Timer B High Register
+		break;
+
+	case 0x08:		// Event LBS
+		break;
+
+	case 0x09:		// Event 8-15
+		break;
+
+	case 0x0a:		// Event MSB
+		break;
+
+	case 0x0b:		// No Connect
+		break;
+
+	case 0x0c:		// SDR Serial Data Register
+		break;
+
+	case 0x0d:		// ICR Interrupt Control Register
+		break;
+
+	case 0x0e:		// CRA Control Register A
+		break;
+
+	case 0x0f:		// CRB Control Register B
+		break;
+	}
+
 	return 0;
 }
 
 void MOS8520::WriteIO(uint16_t address, uint8_t value)
 {
 	// Register 0 - 15
-	cout << "Write to MOS8520 IO-Address: " << std::hex << address << ", " << (uint16_t)value << endl;
+	// cout << "Write to MOS8520 IO-Address: " << std::hex << address << ", " << (uint16_t)value << endl;
+
+	address &= 0x0f;
+
+	switch (address)
+	{
+	case 0x00:		// PRA Peripheral Data Reg. A
+		io[address]=value;
+		pa_latch = value;
+		pa.SetOutput(pa_latch | ~ddr_a);
+		break;
+
+	case 0x01:		// PRB Peripheral Data Reg. B
+		io[address]=value;
+		pb_latch = value;
+		pb.SetOutput(pb_latch | ~ddr_b);
+		break;
+
+	case 0x02:		// DDRA Data Direction Reg. A
+		io[address]=value;
+		ddr_a = value;
+		pa.SetOutput(pa_latch | ~ddr_a);
+		break;
+
+	case 0x03:		// DDRB Data Direction Reg. B
+		io[address]=value;
+		ddr_b = value;
+		pb.SetOutput(pb_latch | ~ddr_b);
+		break;
+
+	case 0x04:		// TA LO Timer A Low Register
+		break;
+
+	case 0x05:		// TA HI Timer A High Register
+		break;
+
+	case 0x06:		// TB LO Timer B Low Register
+		break;
+
+	case 0x07:		// TB HI Timer B High Register
+		break;
+
+	case 0x08:		// Event LBS
+		break;
+
+	case 0x09:		// Event 8-15
+		break;
+
+	case 0x0a:		// Event MSB
+		break;
+
+	case 0x0b:		// No Connect
+		break;
+
+	case 0x0c:		// SDR Serial Data Register
+		break;
+
+	case 0x0d:		// ICR Interrupt Control Register
+		break;
+
+	case 0x0e:		// CRA Control Register A
+		break;
+
+	case 0x0f:		// CRB Control Register B
+		break;
+	}
 }
diff --git a/src/mos8520_class.h b/src/mos8520_class.h
@@ -8,7 +8,7 @@
 // Dieser Sourcecode ist Copyright geschützt!   //
 // Geistiges Eigentum von Th.Kattanek           //
 //                                              //
-// Letzte Änderung am 21.08.2021                //
+// Letzte Änderung am 23.08.2021                //
 // www.emu64.de                                 //
 //                                              //
 //////////////////////////////////////////////////
@@ -20,6 +20,8 @@
 #include <functional>
 #include <iostream>
 
+#include "./cia_port.h"
+
 using namespace std;
 
 class MOS8520
@@ -39,6 +41,21 @@ class MOS8520
 	// Variablen
 
 	bool	*reset;
+
+	PORT        pa;
+	PORT        pb;
+	uint8_t     pa_latch;
+	uint8_t     pb_latch;
+
+private:
+
+	// Funktionen
+
+	// Variablen
+
+	uint8_t     io[16];
+	uint8_t     ddr_a;
+	uint8_t     ddr_b;
 };
 
 #endif // MOS8520_H