+static GtkWidget *memlist;
+
+#define DATA_COLS 16 /* Must be a power of 2 */
+#define DATA_ROWS (INT_MEM_SIZE / DATA_COLS)
+
+enum
+{
+ COL_ADDRESS = 0,
+ COL_DATA0,
+ COL_ASCII = DATA_COLS + 1,
+ N_COLUMNS,
+};
+
+/* Creating a model */
+static GtkListStore *
+memwin_init_store(void)
+{
+ GtkTreeIter iter;
+ int rows;
+ int col;
+ GtkListStore *store;
+ GType col_types[N_COLUMNS];
+
+ for (col = 0; col < N_COLUMNS; col++) {
+ col_types[col] = G_TYPE_STRING;
+ }
+
+ store = gtk_list_store_newv(N_COLUMNS, col_types);
+
+ /* Initialize with rows of dummy data... */
+ for (rows = 0; rows < DATA_ROWS; rows++) {
+ /* Add new row. */
+ gtk_list_store_append(store, &iter);
+ }
+
+ return store;
+}
+
+static void
+memwin_cell_edited(GtkCellRendererText *cell, gchar *path_string,
+ gchar *new_str, gpointer model)
+{
+ guint column;
+ gpointer columnptr;
+ GtkTreeIter iter;
+ int address;
+ u_int8_t old;
+ int new;
+ char *str;
+
+ if (!model) {
+ g_error("Unable to get model from cell renderer");
+ }
+
+ /* Column number is passed as renderer object data */
+ columnptr = g_object_get_data(G_OBJECT(cell), "column");
+ column = GPOINTER_TO_UINT(columnptr);
+
+ /* Get the iterator */
+ gtk_tree_model_get_iter_from_string(model, &iter, path_string);
+
+ /* Get base address. */
+ gtk_tree_model_get(model, &iter, COL_ADDRESS, &str, -1);
+ address = asciihex2int(str);
+
+ /* Convert column number (1, 2, 3...) to index (0, 1, 2...) */
+ address += (column - COL_DATA0);
+ old = cpu8051_ReadD(address);
+
+ log_info("Address: $%02X", address);
+ log_info(" old value: $%02X", old);
+
+ /* Convert new value (asciihex) to integer. */
+ new = asciihex2int(new_str);
+ if ((new < 0) || (new > 255)) {
+ log_info(" new value: out of range");
+ new = old; /* Put back old value... */
+ } else {
+ log_info(" new value: $%02X", new);
+ }
+
+ /* Store new value in emulator memory. */
+ cpu8051_WriteD(address, new);
+
+ /* Convert to text. */
+ int2asciihex(new, str, 2);
+
+ /* Store new value in gtk model. */
+ gtk_list_store_set(GTK_LIST_STORE(model), &iter, column, str, -1);
+
+ /*
+ * Make sure to update all registers and memory.
+ * For example, BANKed registers depends on internal memory.
+ */
+ regwin_Show();
+};
+
+static void
+memwin_init_columns(void)
+{
+ int i;
+ GtkCellRenderer *renderer;
+ GtkTreeViewColumn *column;
+
+ /* Columns and cell renderers */
+ renderer = gtk_cell_renderer_text_new();
+
+ /* Add address column */
+ column = gtk_tree_view_column_new_with_attributes(
+ "Address", renderer, "text", COL_ADDRESS, NULL);
+ gtk_tree_view_column_set_sizing(column, GTK_TREE_VIEW_COLUMN_AUTOSIZE);
+ gtk_tree_view_append_column(GTK_TREE_VIEW(memlist), column);
+
+ for (i = COL_DATA0; i < (COL_DATA0 + DATA_COLS); i++) {
+ char col_name[8];
+
+ /* Create new renderer for each editable cell. */
+ renderer = gtk_cell_renderer_text_new();
+
+ /* Allow edition, align to right side. */
+ g_object_set(renderer, "editable", TRUE, "xalign", 1.0, NULL);
+
+ g_signal_connect(renderer, "edited",
+ G_CALLBACK(memwin_cell_edited),
+ gtk_tree_view_get_model(GTK_TREE_VIEW(memlist)));
+
+ /* Add column index, used when editing the cell. */
+ g_object_set_data(G_OBJECT(renderer), "column",
+ GUINT_TO_POINTER(i));
+
+ sprintf(col_name, "B%02d", i - COL_DATA0);
+
+ column = gtk_tree_view_column_new_with_attributes(
+ col_name, renderer, "text", i, NULL);
+ gtk_tree_view_column_set_sizing(column,
+ GTK_TREE_VIEW_COLUMN_AUTOSIZE);
+ gtk_tree_view_append_column(GTK_TREE_VIEW(memlist), column);
+ }
+
+ /* Add ASCII column */
+ column = gtk_tree_view_column_new_with_attributes(
+ "ASCII", renderer, "text", COL_ASCII, NULL);
+ gtk_tree_view_column_set_sizing(column, GTK_TREE_VIEW_COLUMN_AUTOSIZE);
+ gtk_tree_view_append_column(GTK_TREE_VIEW(memlist), column);
+}