diff options
| -rw-r--r-- | ports.asm | 21 |
1 files changed, 21 insertions, 0 deletions
@@ -563,9 +563,30 @@ port_out_0e: port_in_0f: port_out_0f: port_in_10: + ;; LCD status + clr.b d1 + or.b p10_increment(pc),d1 + or.b p10_row(pc),d1 + or.b p10_enabled(pc),d1 + or.b p10_6bit(pc),d1 + or.b p10_busy(pc),d1 + rts + +p10_increment: ds.b 0 ; $01 if in row mode + ; $00 if in column mode +p10_row: ds.b 0 ; $02 if in increment mode + ; $00 if in decrement mode +p10_enabled: ds.b 0 ; $20 if screen is blanked +p10_6bit: ds.b 0 ; $40 if in 8 bit mode, $00 if in 6 + ; bit mode +p10_busy: ds.b 0 ; always 0 + port_out_10: + ;; LCD command port_in_11: + ;; LCD data port_out_11: + ;; LCD data port_in_12: port_out_12: port_in_13: |