Appendix 1: Programming Cautions253APPENDIX 1: PROGRAMMING CAUTIONS .........................................2541. USING THIS APPENDIX..............................................................2542. PROGRAMMING CAUTIONS REGARDING GAME BOY ...........2552.1 LCDC/VRAM ........................................................................................... 255Reference Notes: .......................................................................................... 2562.2 Communication...................................................................................... 2562.3 Sound...................................................................................................... 2562.4 Miscellaneous Notes ............................................................................. 2573. PROGRAMMING CAUTIONS REGARDING MBCs ....................2603.1 All MBCs ................................................................................................. 2603.2 MBC3....................................................................................................... 2603.3 MBC5....................................................................................................... 2614. SGB PROGRAMMING CAUTIONS .............................................2634.1 ROM Data (Required)............................................................................. 2634.2 Default Data (Required) ......................................................................... 2634.3 SOU_TRN Default Data (Required) ....................................................... 2635. PROGRAMMING CAUTION REGARDING POCKET PRINTER..2645.1 Transfer Time Intervals (Required)....................................................... 2645.2 Printing Multiple Sheets Continuously (Recommended) ................... 2645.3 Print Density (Recommended).............................................................. 2645.4 Operation After the Motor is Stopped (Required) ............................... 2645.5 Feeds (Required).................................................................................... 2645.6 Point of Caution During Debugging (Recommended) ........................ 2645.7 Sample Program Provided by Nintendo (Recommended) ................. 2646. PROGRAMMING CAUTIONS FOR U.S. PROGRAMMERS .........265