screen_advance_to_next_line: // Check if we are at the bottom of the screen ldy TBLX cpy #24 bne !+ // We need to scroll the screen up jsr screen_scroll_up !: inc TBLX // Set PNTR to 0 or 40 (for continued line) ldy TBLX lda LDTBL, y and #$80 bne !+ lda #40 skip_2_bytes_trash_nvz !: lda #$00 sta PNTR jmp chrout_screen_calc_lptr_done