X-Git-Url: http://gitweb.hugovil.com/?a=blobdiff_plain;f=src%2Fpsw.c;h=4dd2a678bf7c683fdb874cae081c5c8db455fb1d;hb=5905b40585298defb8e4230adfe90dfbccb465b9;hp=2210d85218982422b5986173351b7a666a831141;hpb=84075f7a1709b2d05858dc5f866fb4e4eb385ce0;p=emu8051.git

diff --git a/src/psw.c b/src/psw.c
index 2210d85..4dd2a67 100644
--- a/src/psw.c
+++ b/src/psw.c
@@ -28,36 +28,92 @@ psw_write_cy(int cy)
 	u_int8_t psw = memory_read8(INT_MEM_ID, _PSW_);
 
 	if (cy)
-		psw |= 0x80;  /* Set */
+		psw |= PSW_FLAG_CY;  /* Set */
 	else
-		psw &= ~0x80; /* Clear */
+		psw &= ~PSW_FLAG_CY; /* Clear */
 
 	memory_write8(INT_MEM_ID, _PSW_, psw); /* Save updated value */
 }
 
 void
 psw_set_cy(void)
+{
+	psw_write_cy(1);
+}
+
+void
+psw_clr_cy(void)
+{
+	psw_write_cy(0);
+}
+
+/* Returns 0 or 1 */
+int
+psw_read_cy(void)
+{
+	return memory_read8(INT_MEM_ID, _PSW_) >> PSW_BIT_CY;
+}
+
+void
+psw_write_ac(int ac)
 {
 	u_int8_t psw = memory_read8(INT_MEM_ID, _PSW_);
 
-	psw |= 0x80;
+	if (ac)
+		psw |= PSW_FLAG_AC;  /* Set */
+	else
+		psw &= ~PSW_FLAG_AC; /* Clear */
 
 	memory_write8(INT_MEM_ID, _PSW_, psw); /* Save updated value */
 }
 
 void
-psw_clr_cy(void)
+psw_set_ac(void)
+{
+	psw_write_ac(1);
+}
+
+void
+psw_clr_ac(void)
+{
+	psw_write_ac(0);
+}
+
+/* Returns 0 or 1 */
+int
+psw_read_ac(void)
+{
+	return memory_read8(INT_MEM_ID, _PSW_) >> PSW_BIT_AC;
+}
+
+void
+psw_write_ov(int ov)
 {
 	u_int8_t psw = memory_read8(INT_MEM_ID, _PSW_);
 
-	psw &= ~0x80;
+	if (ov)
+		psw |= PSW_FLAG_OV;  /* Set */
+	else
+		psw &= ~PSW_FLAG_OV; /* Clear */
 
 	memory_write8(INT_MEM_ID, _PSW_, psw); /* Save updated value */
 }
 
+void
+psw_set_ov(void)
+{
+	psw_write_ov(1);
+}
+
+void
+psw_clr_ov(void)
+{
+	psw_write_ov(0);
+}
+
 /* Returns 0 or 1 */
 int
-psw_read_cy(void)
+psw_read_ov(void)
 {
-	return memory_read8(INT_MEM_ID, _PSW_) >> 7;
+	return memory_read8(INT_MEM_ID, _PSW_) >> PSW_BIT_OV;
 }