Expanded console API

src/console.s

@@ -210,7 +210,7 @@ done
 ;   Y: Target row
 ; Return Value:
 ;   None
-console_move_cursor .proc
+console_cursor_move .proc
     .save_registers
 
     .long_a
@@ -223,6 +223,84 @@ console_move_cursor .proc
     rtl
 .endproc
 
+; Reposition the cursor to 0,0 - the upper left corner of the screen.
+;
+; Arguments:
+;   None
+; Return Value:
+;   None
+console_cursor_home .proc
+    .save_registers
+
+    .long_a
+    lda #0
+    sta console_cursor_column
+    sta console_cursor_row
+
+    .restore_registers
+    rtl
+.endproc
+
+; Clear the entire text buffer and returnt the cursor to the top
+; left cell.
+;
+; Arguments:
+;   None
+; Return Value:
+;   None
+console_clear_screen .proc
+    .save_registers
+
+    ldx #0
+    lda #0
+loop
+    sta console_buffer_color, X
+    sta console_buffer_text, X
+    inx
+    cpx #BUFFER_SIZE
+    bne loop
+
+    jsl console_cursor_home
+
+    lda #$FF
+    sta console_screen_dirty
+
+    .restore_registers
+    rtl
+.endproc
+
+; Clear all text from the current cursor position to the end of
+; the current line.
+;
+; Arguments:
+;   None
+; Return Value:
+;   None
+console_clear_to_end_of_line .proc
+    .save_registers
+
+    .long_a
+    lda #79
+    sec
+    sbc console_cursor_column
+    tax
+    .short_a
+    lda console_cursor_color
+    pha
+    lda #0
+    sta console_cursor_color
+loop
+    jsl console_putchar
+    dex
+    bne loop
+
+    lda #$FF
+    sta console_screen_dirty
+
+    .restore_registers
+    rtl
+.endproc
+
 ; Insert a character at the current cursor location.
 ;
 ; Arguments:

src/main.s

@@ -24,7 +24,7 @@ main .proc
 
     ldx #34
     ldy #14
-    jsl console_move_cursor
+    jsl console_cursor_move
 
     lda #`greeting_message
     ldx #<>greeting_message