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Fix mis-documentation

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This commit is contained in:
Virgil Dupras 2019-10-04 13:52:14 -04:00
parent 8db1bdb245
commit 63d6cf0875
1 changed files with 4 additions and 4 deletions
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doc/blockdev.md
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@ -20,7 +20,7 @@ That tells `blockdev` that we're going to set up one device, that its GetC and
PutC are the ones defined by `acia.asm`. PutC are the ones defined by `acia.asm`.
If your block device is read-only or write-only, use dummy routines. `unsetZ` If your block device is read-only or write-only, use dummy routines. `unsetZ`
is a good choice since it will return with the `Z` flag set, indicating an is a good choice since it will return with the `Z` flag unset, indicating an
error (dummy methods aren't supposed to be called). error (dummy methods aren't supposed to be called).
Each defined block device, in addition to its routine definition, holds a Each defined block device, in addition to its routine definition, holds a
@ -33,12 +33,12 @@ they should try to adhere to the convention, that is:
**GetC**: Get the character at position specified by `HL`. If it supports 32-bit **GetC**: Get the character at position specified by `HL`. If it supports 32-bit
addressing, `DE` contains the high-order bytes. Return the result in addressing, `DE` contains the high-order bytes. Return the result in
`A`. If there's an error (for example, address out of range), set `Z`. `A`. If there's an error (for example, address out of range), unset
This routine is not expected to block. We expect the result to be `Z`. This routine is not expected to block. We expect the result to be
immediate. immediate.
**PutC**: The opposite of GetC. Write the character in `A` at specified **PutC**: The opposite of GetC. Write the character in `A` at specified
position. `Z` set on error. position. `Z` unset on error.
## Shell usage ## Shell usage