Differences
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| Both sides previous revisionPrevious revisionNext revision | Previous revisionLast revisionBoth sides next revision | ||
| en:docs:kernel:doskrnl [2024/05/24 02:01] – prokushev | en:docs:kernel:doskrnl [2024/05/25 02:39] – prokushev | ||
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| Line 12: | Line 12: | ||
| * CS:IP - starting point | * CS:IP - starting point | ||
| - | * SS:BP - pointer to the DOSKRNL init structure (also refered | + | * SS:BP - pointer to the DOSKRNL init structure (also referenced |
| * SS:SP - stack pointer (size around 800 bytes) | * SS:SP - stack pointer (size around 800 bytes) | ||
| Line 31: | Line 31: | ||
| | 26 | 1 | Current drive (1-A, 2-B, 3-C, ...)| | | 26 | 1 | Current drive (1-A, 2-B, 3-C, ...)| | ||
| | 27 | 1 | Boot drive (1-A, 2-B, 3-C, ...) | | | 27 | 1 | Boot drive (1-A, 2-B, 3-C, ...) | | ||
| - | | ???? | ??? | ???? | | + | | 28 | 1 | Last drive (1-A, 2-B, 3-C, ...) | |
| + | | ??? | ??? | ??? | | ||
| DEVICES is ASCIIZ string with list of DOS devices to be loaded divided by 0AH | DEVICES is ASCIIZ string with list of DOS devices to be loaded divided by 0AH | ||
| Line 37: | Line 38: | ||
| SHELL is ASCIIZ string. | SHELL is ASCIIZ string. | ||
| - | SHELL arguments is ASCIIZ string (first byte is as string length, string ends with 0dh) | + | SHELL arguments is ASCIIZ string (first byte is a string length, string ends with 0dh) |
| VDD is linked list of structures: | VDD is linked list of structures: | ||
| - | VDDs linked list in standard DOS Device drivers format. Entry can be placed in HMA, so need to be sure A20 enabled for such entries. | + | VDDs linked list in standard DOS Device drivers format. Entry can be placed in HMA, so need to be sure A20 enabled for such entries. |
| ^ offset ^ Size ^ Description ^ | ^ offset ^ Size ^ Description ^ | ||
| Line 81: | Line 82: | ||
| * DOS | * DOS | ||
| * BREAK | * BREAK | ||
| + | * FCBS | ||
| + | * LASTDRIVE | ||
| todo add more info here | todo add more info here | ||