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This field is counted in half-cycles.

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This commit is contained in:
Thomas Harte
2021-04-26 21:20:32 -04:00
parent 7fb3048257
commit 708c24cc57
2 changed files with 17 additions and 19 deletions
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Storage/State/Z80.cpp
+2 -4
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@@ -148,18 +148,16 @@ std::unique_ptr<Analyser::Static::Target> Z80::load(const std::string &file_name
// More Z80, the emulator, lack of encapsulation to deal with here.
const uint16_t low_t_state = file.get16le();
const uint16_t high_t_state = file.get8();
int time_since_interrupt;
switch(result->model) {
case Target::Model::SixteenK:
case Target::Model::FortyEightK:
time_since_interrupt = (17471 - low_t_state) + (high_t_state * 17472);
state->video.half_cycles_since_interrupt = ((17471 - low_t_state) + (high_t_state * 17472)) * 2;
break;
default:
time_since_interrupt = (17726 - low_t_state) + (high_t_state * 17727);
state->video.half_cycles_since_interrupt = ((17726 - low_t_state) + (high_t_state * 17727)) * 2;
break;
}
// TODO: map time_since_interrupt to time_into_frame, somehow.
// Skip: Spectator flag, MGT, Multiface and other ROM flags.
file.seek(5, SEEK_CUR);