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ae028e3a86
This huge refactoring remove the Seek and Tell routine from blockdev implementation requirements and change GetC and PutC's API so that they take an address to read and write (through HL/DE) at each call. The "PTR" approach in blockdev implementation was very redundant from device to device and it made more sense to generalize. It's possible that future device aren't "random access", but we'll be able to add more device types later. Another important change in this commit is that the "blockdev handle" is now opaque. Previously, consumers of the API would happily call routines directly from one of the 4 offsets. We can't do that any more. This makes the API more solid for future improvements. This change forced me to change a lot of things in fs, but overall, things are now simpler. No more `FS_PTR`: the "device handle" now holds the active pointer. Lots, lots of changes, but it also feels a lot cleaner and solid.
15 lines
384 B
C
15 lines
384 B
C
; Error codes used throughout the kernel
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; The command that was type isn't known to the shell
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.equ SHELL_ERR_UNKNOWN_CMD 0x01
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; Arguments for the command weren't properly formatted
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.equ SHELL_ERR_BAD_ARGS 0x02
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.equ BLOCKDEV_ERR_OUT_OF_BOUNDS 0x03
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.equ BLOCKDEV_ERR_UNSUPPORTED 0x04
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; IO routines (GetC, PutC) returned an error in a load/save command
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.equ SHELL_ERR_IO_ERROR 0x05
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