gba 开发文档 ads gba模板

gba的开发文档。包括一份gba的cpu说明（中文翻译版）和ads环境下的gba开发模板(包括一个gba模拟器tool)。 // // HAM (c) Emanuel Schleussinger 2001/2002 // all rights reserved. // // Includes Doxygen compatible documentation // http://www.doxygen.org // /* ---------------------------------------------------------- REG_ --> Register location absolute adress of a register. includes typecasting for direct c writes. example: R_DISPCNT = value; MEN_ --> MEMORY address V_ --> Value A register related value used by macros and functions. Register Masks are also treated as values, this is currently in- consistent with C_ (constants), which they should be really. Anyone want to clean up? :-) C_ --> Constant Helpers that will never need change. holds values for bitfields that are hard to remember Also note, C_'s might get declared only once for a set of registers. If so, two rules apply: - the C_ declaration always is in the first register of the set. - the number of the register (example BG0CNT, BG1CNT) is set to C_BGXCNT. F_ --> Function a function returns a value suchas true M_ --> Macro A macro does stuff on its own, suchas switching a display mode or enabling sprites. This is what you will be using most of the time. Example: M_INTMST_ENABLE will enable interrupts TOOL_ --> Tool function Usually a collection of macros and/or functions. Propably not the fastest on earth, but very convienient. These are found at the end of the file. For example TOOL_INIT_ALL(1) sets up the display for BGMode 1 and inits sound and interrupts. Notes: ------ Some of the functions/macros are not the fastest on earth, i know that. Most of them are built for convienience rather than speed, and will suffice in the most cases. Also, please do not mail me about the fact that using REG= A | B | C | D is faster than what is being done here. I know that ;-) First of all, that only applies sometimes (if you need to set whole bitfields), and second of all, you can still do it on your own using the R_ defines. I do the same in my code, but it proves handy to have the base cases covered. Disclaimer: ----------- I'd like to be greeted in your demo if you use this header :) Be fair. Also, this source file and any other part of HAM must NOT: - be changed and redistributed as new versions, I would like to keep the main distribution point on my end. Help with any suggestions please, though. You WILL be mentioned for any help you did on HAM, and also, you can join in the team. --------------------------------------------------------- */