KW11-L state

CMakeLists.txt

@@ -33,6 +33,7 @@ add_executable(
   cpu.cpp
   dc11.cpp
   debugger.cpp
+  device.cpp
   disk_backend.cpp
   disk_backend_file.cpp
   disk_backend_nbd.cpp
@@ -84,6 +85,7 @@ add_executable(
   cpu.cpp
   dc11.cpp
   debugger.cpp
+  device.cpp
   disk_backend.cpp
   disk_backend_file.cpp
   disk_backend_nbd.cpp

debugger.cpp

@@ -26,6 +26,7 @@
 #include "disk_backend_esp32.h"
 #endif
 #include "disk_backend_nbd.h"
+#include "kw11-l.h"
 #include "loaders.h"
 #include "log.h"
 #include "memory.h"
@@ -730,6 +731,8 @@ void debugger(console *const cnsl, bus *const b, std::atomic_uint32_t *const sto
 					b->getDC11()->show_state(cnsl);
 				else if (parts[1] == "tm11")
 					b->getTM11()->show_state(cnsl);
+				else if (parts[1] == "kw11l")
+					b->getKW11_L()->show_state(cnsl);
 				else
 					cnsl->put_string_lf(format("Device \"%s\" is not known", parts[1].c_str()));
 
@@ -1012,7 +1015,7 @@ void debugger(console *const cnsl, bus *const b, std::atomic_uint32_t *const sto
 					"strace x      - start tracing from address - invoke without address to disable",
 					"trl x         - set trace run-level (0...3), empty for all",
 					"regdump       - dump register contents",
-					"state x       - dump state of a device: rl02, rk05, mmu, tm11 or dc11",
+					"state x       - dump state of a device: rl02, rk05, mmu, tm11, kw11l or dc11",
 					"mmures x      - resolve a virtual address",
 					"qi            - show queued interrupts",
 					"setpc x       - set PC to value",

device.h

@@ -15,7 +15,7 @@ public:
 
 	virtual void show_state(console *const cnsl) const = 0;
 
-        virtual uint8_t  read_byte(const uint16_t addr) = 0;
+        virtual uint8_t  read_byte(const uint16_t addr);
         virtual uint16_t read_word(const uint16_t addr) = 0;
 
         virtual void write_byte(const uint16_t addr, const uint8_t  v) = 0;

kw11-l.cpp

@@ -42,6 +42,11 @@ kw11_l::~kw11_l()
 #endif
 }
 
+void kw11_l::show_state(console *const cnsl) const
+{
+	cnsl->put_string_lf(format("CSR: %06o", lf_csr));
+}
+
 void kw11_l::begin(console *const cnsl)
 {
 	this->cnsl = cnsl;
@@ -131,6 +136,27 @@ uint16_t kw11_l::read_word(const uint16_t a)
 	return temp;
 }
 
+void kw11_l::write_byte(const uint16_t addr, const uint8_t value)
+{
+	if (addr != ADDR_LFC) {
+		TRACE("KW11-L write_byte not for us (%06o to %06o)", value, addr);
+		return;
+	}
+
+	uint16_t vtemp = lf_csr;
+	
+	if (addr & 1) {
+		vtemp &= ~0xff00;
+		vtemp |= value << 8;
+	}
+	else {
+		vtemp &= ~0x00ff;
+		vtemp |= value;
+	}
+
+	write_word(addr, vtemp);
+}
+
 void kw11_l::write_word(const uint16_t a, const uint16_t value)
 {
 	if (a != ADDR_LFC) {

kw11-l.h

@@ -6,10 +6,11 @@
 
 #include "bus.h"
 #include "console.h"
+#include "device.h"
 #include "gen.h"
 
 
-class kw11_l
+class kw11_l: public device
 {
 private:
 	bus         *const b          { nullptr };
@@ -36,6 +37,8 @@ public:
 
 	void     reset();
 
+	void     show_state(console *const cnsl) const override;
+
 #if IS_POSIX
 	json_t *serialize();
 	static kw11_l *deserialize(const json_t *const j, bus *const b, console *const cnsl);
@@ -45,5 +48,7 @@ public:
 	void     operator()();
 
 	uint16_t read_word (const uint16_t a);
+
+	void     write_byte(const uint16_t addr, const uint8_t v);
 	void     write_word(const uint16_t a, const uint16_t v);
 };