Struct Hp28 

pub struct Hp28;

Where the 28S’s ROM (2BB, its only revision) keeps its command line (wiki: hardware/hp28s “Command line”). The text is kept as on the 48, reversed below a pointer, and zeroed when the line closes; the line closes when it empties, so an open line always has text.

Implementations

impl Hp28

pub const TEXT_END_PTR: u32 = 0xC006E

Pointer just past the text’s first character.

pub const FLOOR_PTR: u32 = 0xC0069

Pointer never above the byte under the text.

pub const CURSOR: u32 = 0xC0126

The cursor, 5 nibbles, in characters from the start.

pub const OPEN: u32 = 0xC015D

Bit 0: a command line is open.

pub const ENTRY: u32 = 0xC00EE

Bit 1 insert mode (the ROM starts in replace mode), bit 2 algebraic entry.

pub const ALPHA_ENTRY: u32 = 0xC00ED

Bit 0: alpha entry mode (α, «, EDIT).

pub const LOWERCASE: u32 = 0xC00F0

Bit 2: lowercase.

Trait Implementations

impl Clone for Hp28

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for Hp28

impl Debug for Hp28

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.