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library: Add comment about console setup in dual 3D DMA mode

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Antonio Niño Díaz 2023-10-12 19:59:39 +01:00
parent 166cf29986
commit 53a66ae746
1 changed files with 11 additions and 0 deletions
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11
source/NEGeneral.c
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@ -530,6 +530,17 @@ void NE_InitConsole(void)
vramSetBankC(VRAM_C_MAIN_BG_0x06000000);
consoleInit(0, 1, BgType_Text4bpp, BgSize_T_256x256, 8, 0, true, true);
// We have just called consoleInit() to initialize the background
// and to load the graphics. The next call to consoleInit() will
// deinitialize the console from VRAM C, but it will leave the
// graphics that have been loaded, which is what we wanted.
//
// VRAM I is always setup as sub background RAM, so we can rely on
// the console always being mapped at the same address, while VRAM C
// will alternate between LCD and main BG. We use libnds to write to
// VRAM I, and copy the map to VRAM C whenever VRAM C is set as main
// BG RAM.
// Sub engine - VRAM_I:
// Available memory: 0x06208000 - 0x0620C000 (16 KB)
// Framebuffer (one line): 0x06208000 - 0x06208200 (512 B)