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Fixed timing issues. Static box of frame achieved!

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This commit is contained in:
Thomas Harte 2016-10-12 21:42:36 -04:00
parent 304f0999cd
commit 1f857c619b
2 changed files with 8 additions and 6 deletions
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12
Machines/Oric/Video.cpp
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@ -15,7 +15,7 @@ VideoOutput::VideoOutput(uint8_t *memory) :
_frame_counter(0), _counter(0),
_state(Sync), _cycles_in_state(0)
{
_crt.reset(new Outputs::CRT::CRT(384, 6, Outputs::CRT::DisplayType::PAL50, 1));
_crt.reset(new Outputs::CRT::CRT(64*6, 6, Outputs::CRT::DisplayType::PAL50, 1));
// TODO: this is a copy and paste from the Electron; factor out.
_crt->set_rgb_sampling_function(
@ -42,9 +42,11 @@ void VideoOutput::run_for_cycles(int number_of_cycles)
_counter = (_counter + 1)%(312 * 64); // TODO: NTSC
State new_state = Blank;
if((_counter & 63) >= 48 && (_counter & 63) <= 53) new_state = Sync;
else if(_counter >= 256*312 && _counter <= 259*312) new_state = Sync;
else if(_counter < 224 && ((_counter&63) < 40)) new_state = Pixels;
int h_counter =_counter & 63;
if(
(h_counter >= 48 && h_counter <= 53) ||
(_counter >= 256*64 && _counter <= 259*64)) new_state = Sync;
else if(_counter < 224*64 && h_counter < 40) new_state = Pixels;
if(_state != new_state)
{
@ -58,7 +60,7 @@ void VideoOutput::run_for_cycles(int number_of_cycles)
_cycles_in_state = 0;
if(_state == Pixels) _pixel_target = _crt->allocate_write_area(120);
}
else _cycles_in_state++;
_cycles_in_state++;
if(new_state == Pixels) {
_pixel_target[0] = 0x70;

2
Outputs/CRT/CRT.hpp
View File

@ -103,7 +103,7 @@ class CRT {
machines output will run at a fixed multiple of the clock rate; knowing this divisor can improve
internal precision.
@param height_of_dispaly The number of lines that nominally form one field of the display, rounded
@param height_of_display The number of lines that nominally form one field of the display, rounded
up to the next whole integer.
@param colour_cycle_numerator Specifies the numerator for the per-line frequency of the colour subcarrier.