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Adds a virtual delete key to the ZX80 and ZX81.

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This commit is contained in:
Thomas Harte 2020-02-29 22:51:42 -05:00
parent 560394fead
commit 0705a99ea0
3 changed files with 23 additions and 4 deletions
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3
Machines/ZX8081/Keyboard.cpp
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@ -28,6 +28,9 @@ uint16_t KeyboardMapper::mapped_key_for_key(Inputs::Keyboard::Key key) {
BIND(FullStop, KeyDot);
BIND(Enter, KeyEnter);
BIND(Space, KeySpace);
// Virtual keys follow.
BIND(Backspace, KeyDelete);
}
#undef BIND
return KeyboardMachine::MappedMachine::KeyNotMapped;

3
Machines/ZX8081/Keyboard.hpp
View File

@ -23,6 +23,9 @@ enum Key: uint16_t {
KeyP = 0x0500 | 0x01, KeyO = 0x0500 | 0x02, KeyI = 0x0500 | 0x04, KeyU = 0x0500 | 0x08, KeyY = 0x0500 | 0x10,
KeyEnter = 0x0600 | 0x01, KeyL = 0x0600 | 0x02, KeyK = 0x0600 | 0x04, KeyJ = 0x0600 | 0x08, KeyH = 0x0600 | 0x10,
KeySpace = 0x0700 | 0x01, KeyDot = 0x0700 | 0x02, KeyM = 0x0700 | 0x04, KeyN = 0x0700 | 0x08, KeyB = 0x0700 | 0x10,
// Add some virtual keys; these do not exist on a real ZX80 or ZX81. They're just a convenience.
KeyDelete = 0x0801,
};
struct KeyboardMapper: public KeyboardMachine::MappedMachine::KeyboardMapper {

21
Machines/ZX8081/ZX8081.cpp
View File

@ -349,10 +349,23 @@ template<bool is_zx81> class ConcreteMachine:
// MARK: - Keyboard
void set_key_state(uint16_t key, bool is_pressed) final {
if(is_pressed)
key_states_[key >> 8] &= static_cast<uint8_t>(~key);
else
key_states_[key >> 8] |= static_cast<uint8_t>(key);
const auto line = key >> 8;
// Check for special cases.
if(line == 8) {
switch(key) {
case KeyDelete:
// Map delete to shift+0.
set_key_state(KeyShift, is_pressed);
set_key_state(Key0, is_pressed);
break;
}
} else {
if(is_pressed)
key_states_[line] &= uint8_t(~key);
else
key_states_[line] |= uint8_t(key);
}
}
void clear_all_keys() final {