From f51b0a34cdcfe70f57add0e36dd3b34e3dbc83db Mon Sep 17 00:00:00 2001 From: Pavel Pisa Date: Fri, 28 Jun 2019 13:33:12 +0200 Subject: Document limitation of memory view which is not usable for frame-buffer access. Signed-off-by: Pavel Pisa --- README.md | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/README.md b/README.md index f3d42d4..8d2380b 100644 --- a/README.md +++ b/README.md @@ -201,6 +201,10 @@ component in bits 5 .. 10 and blue component in bits 0 .. 4. #define LCD_FB_START 0xffe00000 #define LCD_FB_END 0xffe4afff ``` +Limitation: actual concept of memory view updates and access +doesnot allows to reliably read peripheral registers and I/O +memory content. It is possible to write into framebuffer memory +when cached (from CPU perspective) access to memory is selected. Interrupts and Coprocessor 0 Support ------------------------------------ -- cgit v1.2.3