mirror of
https://github.com/hsoft/collapseos.git
synced 2024-11-15 05:18:05 +11:00
17 lines
753 B
Plaintext
17 lines
753 B
Plaintext
|
anatomy. First, we have constants. Some of them are device-
|
||
|
|
specific, but some of them are always there. RAMSTART is the
|
||
|
|
address at which the RAM starts on the system. System variables
|
||
|
|
will go there and HERE will go after it.
|
||
|
|
|
||
|
|
RS_ADDR is where RSP starts and PS_ADDR is where PSP starts.
|
||
|
|
RSP and PSP are designed to be contiguous. RSP goes up and PSP
|
||
|
|
goes down. If they meet, we know we have a stack overflow.
|
||
|
|
|
||
|
|
Then, we load the assembler and cross compilation unit, which
|
||
|
|
will be needed for the task ahead.
|
||
|
|
|
||
|
|
Then, it's a matter of adding layer after layer. For most
|
||
|
|
system, all those layers except the drivers will be added the
|
||
|
|
same way. Drivers are a bit tricker and machine specific. I
|
||
|
|
can't help you there, you'll have to use your wits. (cont.)
|