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Experimental: is this meant to be a compare-before-increment?

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This commit is contained in:
Thomas Harte 2017-08-07 23:02:29 -04:00
parent d73dcbb268
commit 46278ff297
1 changed files with 3 additions and 1 deletions
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4
Components/6845/CRTC6845.hpp
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@ -96,6 +96,8 @@ template <class T> class CRTC6845 {
if(bus_state_.row_address == registers_[9]) {
line_address_ = bus_state_.refresh_address;
bus_state_.row_address = 0;
bool is_at_end_of_frame = line_counter_ == registers_[4];
line_counter_++;
// check for end of visible lines
@ -111,7 +113,7 @@ template <class T> class CRTC6845 {
}
// check for entry into the overflow area
if(line_counter_ == registers_[4]) {
if(is_at_end_of_frame) {
if(registers_[5]) {
is_in_adjustment_period_ = true;
} else {