tfv: finally have code working as well as before page-flipping

gr-sim/gr-sim.c

@@ -865,8 +865,28 @@ int gr_copy(short source, short dest) {
 	int i,j,l;
 
 	for(i=0;i<8;i++) {
-		source_addr=gr_addr_lookup[i]+0x400;
-		dest_addr=gr_addr_lookup[i];
+		source_addr=gr_addr_lookup[i]+(source-0x400);
+		dest_addr=gr_addr_lookup[i]+(dest-0x400);
+
+		if (i<4) l=120;
+		else l=80;
+
+		for(j=0;j<l;j++) {
+			ram[dest_addr+j]=ram[source_addr+j];
+		}
+	}
+
+	return 0;
+}
+
+int gr_copy_to_current(short source) {
+
+	short dest_addr,source_addr;
+	int i,j,l;
+
+	for(i=0;i<8;i++) {
+		source_addr=gr_addr_lookup[i]+(source-0x400);
+		dest_addr=gr_addr_lookup[i]+(0x400*ram[DRAW_PAGE]);
 
 		if (i<4) l=120;
 		else l=80;
@@ -1346,7 +1366,7 @@ void move_cursor(void) {
 	address=gr_addr_lookup[ram[CV]];
 	address+=ram[CH];
 
-	hlin_addr+=(ram[DRAW_PAGE]*4)<<8;
+	address+=(ram[DRAW_PAGE]*4)<<8;
 
 	ram[BASL]=address&0xff;
 	ram[BASH]=address>>8;
@@ -1363,3 +1383,13 @@ void print(char *string) {
 	}
 	ram[BASL]+=strlen(string);
 }
+
+void print_inverse(char *string) {
+
+	for(y=0;y<strlen(string);y++) {
+		a=string[y];
+		a=a&0x3f;
+		ram[y_indirect(BASL,y)]=a;
+	}
+	ram[BASL]+=strlen(string);
+}

gr-sim/gr-sim.h

@@ -15,6 +15,7 @@ int grsim_unrle(unsigned char *rle_data, int address);
 int home(void);
 int grsim_put_sprite(int page,unsigned char *sprite_data, int xpos, int ypos);
 int gr_copy(short source, short dest);
+int gr_copy_to_current(short source);
 int text(void);
 void basic_htab(int x);
 void basic_vtab(int y);
@@ -35,6 +36,7 @@ void vtab(int ypos);
 void htab(int xpos);
 void move_cursor(void);
 void print(char *string);
+void print_inverse(char *string);
 
 
 #define APPLE_UP        11

gr-sim/tfv_title.c

@@ -18,12 +18,19 @@ int title(void) {
 
 	int result;
 
-	home();
+	clear_bottom(0);
+	clear_bottom(1);
 
 	grsim_unrle(title_rle,0xc00);
-	gr_copy(0xc00,0x400);
 
-	grsim_update();
+	gr_copy_to_current(0xc00);
+	page_flip();
+	gr_copy_to_current(0xc00);
+
+//	page_flip();
+//	page_flip();
+
+//	grsim_update();
 
 	result=select_menu(12, 22, 3, title_menu);
 

gr-sim/tfv_utils.c

@@ -3,6 +3,7 @@
 #include <unistd.h>
 #include <string.h>
 
+#include "tfv_utils.h"
 #include "gr-sim.h"
 #include "tfv_zp.h"
 
@@ -27,22 +28,20 @@ int select_menu(int x, int y, int num, char **items) {
 
 	while(1) {
 		for(i=0;i<num;i++) {
-			basic_htab(x);
-			basic_vtab(y+i);
+			htab(x);
+			vtab(y+i);
+			move_cursor();
 
 			if (i==result) {
-				basic_inverse();
-				basic_print("--> ");
+				print_inverse("--> ");
 			}
 			else {
-				basic_print("    ");
+				print("    ");
 			}
 
-			basic_print(items[i]);
-			basic_normal();
-			grsim_update();
+			print(items[i]);
 		}
-
+		page_flip();
 
 		ch=repeat_until_keypressed();
 		if (ch=='\r') break;