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Correct longstanding confusion over character fetch.

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This commit is contained in:
Thomas Harte 2024-12-31 08:25:05 -05:00
parent 6197486d49
commit 233a627c9f
1 changed files with 4 additions and 5 deletions
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9
Machines/Commodore/Plus4/Video.hpp
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@ -290,14 +290,13 @@ public:
const uint16_t address = video_matrix_base_ + video_counter_; const uint16_t address = video_matrix_base_ + video_counter_;
if(bad_line2_) { if(bad_line2_) {
shifter_.write<1>(pager_.read(address)); shifter_.write<1>(pager_.read(address));
} else { } else if(bad_line()) {
const auto data = pager_.read(address + 0x400); next_character_.write(shifter_.read<0>());
shifter_.write<0>(data); shifter_.write<0>(pager_.read(address + 0x400));
if(bad_line()) next_character_.write(data);
} }
next_attribute_.write(shifter_.read<1>());
if(!bad_line()) next_character_.write(shifter_.read<0>()); if(!bad_line()) next_character_.write(shifter_.read<0>());
next_attribute_.write(shifter_.read<1>());
next_cursor_.write( next_cursor_.write(
(flash_count_ & 0x10) && (flash_count_ & 0x10) &&
( (