2020-05-21 15:25:12 -04:00
|
|
|
anatomy. First, we have constants. Some of them are device-
|
2020-06-28 18:49:30 -04:00
|
|
|
specific, but some of them are always there. SYSVARS is the
|
2020-05-21 15:25:12 -04:00
|
|
|
address at which the RAM starts on the system. System variables
|
2020-06-28 19:45:28 -04:00
|
|
|
will go there and use 0x80 bytes. See B80.
|
|
|
|
|
|
|
|
|
|
HERESTART determines where... HERE is at startup. 0 means
|
|
|
|
|
"same as CURRENT".
|
2020-05-21 15:25:12 -04:00
|
|
|
|
|
|
|
|
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.
|
|
|
|
|
|
2020-06-28 19:45:28 -04:00
|
|
|
(cont.)
|
