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Add notes to self on how to collect text.

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This commit is contained in:
Thomas Harte 2023-02-13 21:09:31 -05:00
parent 40894964bc
commit 5143960970
1 changed files with 43 additions and 5 deletions
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48
Components/9918/Implementation/Fetch.hpp
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@ -467,13 +467,52 @@ template<ScreenMode mode> void Base<personality>::fetch_yamaha([[maybe_unused]]
const AddressT rotated_name_ = pattern_name_address_ >> 1;
const uint8_t *const ram2 = &ram_[65536];
using Type = typename Storage<personality>::Event::Type;
while(Storage<personality>::next_event_->offset < end) {
switch(Storage<personality>::next_event_->type) {
case Storage<personality>::Event::Type::External:
case Type::External:
do_external_slot(Storage<personality>::next_event_->offset);
break;
case Storage<personality>::Event::Type::DataBlock: {
case Type::Name:
switch(mode) {
case ScreenMode::Text:
// TODO: read two new character names.
break;
case ScreenMode::YamahaText80:
// TODO: read four new character names.
break;
default: break;
}
break;
case Type::Colour:
switch(mode) {
case ScreenMode::YamahaText80:
// TODO: read a single 'colour' (i.e. a bitfield, governing colour selection for eight characters).
break;
default: break;
}
break;
case Type::Pattern:
switch(mode) {
case ScreenMode::Text:
// TODO: look up two sets of character contents, based on names from earlier.
break;
case ScreenMode::YamahaText80:
// TODO: look up four sets of character contents, based on names from earlier.
break;
default: break;
}
break;
case Type::DataBlock:
// Exactly how to fetch depends upon mode...
switch(mode) {
case ScreenMode::YamahaGraphics4:
@ -507,10 +546,9 @@ template<ScreenMode mode> void Base<personality>::fetch_yamaha([[maybe_unused]]
line_buffer.bitmap[column + 7] = ram2[rotated_name_ & AddressT(start + 3)];
} break;
default:
break;
default: break;
}
} break;
break;
default: break;
}