diff options
Diffstat (limited to 'c/src/lib/libbsp/i386/i386ex/startup/README')
-rw-r--r-- | c/src/lib/libbsp/i386/i386ex/startup/README | 26 |
1 files changed, 8 insertions, 18 deletions
diff --git a/c/src/lib/libbsp/i386/i386ex/startup/README b/c/src/lib/libbsp/i386/i386ex/startup/README index 6a61b9f3c3..17fde76a91 100644 --- a/c/src/lib/libbsp/i386/i386ex/startup/README +++ b/c/src/lib/libbsp/i386/i386ex/startup/README @@ -3,25 +3,15 @@ # - The doit shell file cd's to $H, which refers to the directory -that contains the hello world test. The console is a raw com port. -Certain test programs behave differently with different com port speeds. -To test the programs, it is required that you hook up a terminal -( or minicom or procomm it doesn't really matter ) to the comm port of -the target hardware. You must ensure that the baud rate, parity etc -is set properly. This is done on the target hardware within interns.s . -( Set your terminal emulator to match. ) Currently, the settings -are 9600,8,n,1 . +The requirements for this BSP are only that the GAS used supports the +.code16 directive. The GAS released with any GCC version 2.8.0 or better +is required. The BSP was built with an egcs snapshot pre-1.0.2 and +post-1.0.1. However, any egcs should work. -The format and layout of the file interns.s is taken from the -intel ApBuilder software, freely distributed by Intel. Some -easy macros ( SetExRegByte and SetExRegWord ) are basically lifted -from the Intel macros. Similarly for the names of the IO ports. -This "port" begain with the forceCPU bsp. Hence I am sure that -there is some real trash that is not appropriate. For example -the act of copying the Interrupt Descriptor tables and Global -descriptor tables "into our space". ( in start.s I think ) +The only "real" differences are in bspstart.c, where the initialization now +configures all available RAM, (after setting up the Workspaces) as heap. +The location of the stack was changed so that the heap was not trapped +between low memory and the stack; the stack comes before the heap. -Erik |