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secondary boot relocated to 384k; may need to move lower again eventually

This commit is contained in:
cgd 1994-01-26 09:19:04 +00:00
parent a69eeae1a0
commit 63199c0f52
3 changed files with 3 additions and 3 deletions
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2
sys/arch/i386/boot/README.386BSD
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@ -29,7 +29,7 @@ the BIOS.
4/ Boot1 will look at block0 (which might be itself if there are no DOS
partitions) and will find the 386bsd partition, and using the information
regarding the start position of that partition, will load the next 13 sectors
or so, to around 90000 (640k - 64k). and will jump into it at the appropriate
or so, to around 60000 (640k - 256k). and will jump into it at the appropriate
entry point. Since boot1 and boot2 were compiled together as one file
and then split later, boot1 knows the exact position within boot2 of the
entry point.

2
sys/arch/i386/boot/README.MACH
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@ -64,7 +64,7 @@
first 29 sectors of the active partition is reserved for boot code
which will be loaded by the first stage boot. All the disk types
recognized by BIOS are supported by this bootstrap loader.
[for 386bsd we load the second stage booter to 9000:0]
[for 386bsd we load the second stage booter to 6000:0]

2
sys/arch/i386/boot/start.S
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@ -52,7 +52,7 @@ WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
.file "start.s"
BOOTSEG = 0x9000 # boot will be loaded here (below 640K)
BOOTSEG = 0x6000 # boot will be loaded here (below 640K)
BOOTSTACK = 0xe000 # boot stack
SIGNATURE = 0xaa55
LOADSZ = 15 # size of unix boot