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platinum: Registers affect display immediately.

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This commit is contained in:
joevt 2024-02-18 18:21:28 -08:00 committed by dingusdev
parent 2ab6a94795
commit d98929f24c
2 changed files with 45 additions and 4 deletions
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48
devices/memctrl/platinum.cpp
View File

@ -237,12 +237,15 @@ void PlatinumCtrl::write(uint32_t rgn_start, uint32_t offset, uint32_t value, in
case PlatinumReg::FB_BASE_ADDR:
this->fb_addr = value;
this->fb_offset = value & 0x3FFFFF;
this->change_display();
break;
case PlatinumReg::ROW_WORDS:
this->row_words = value & ~7;
this->change_display();
break;
case PlatinumReg::CLOCK_DIVISOR:
this->clock_divisor = value;
this->change_display();
break;
case PlatinumReg::FB_CONFIG_1:
this->fb_config_1 = value;
@ -278,6 +281,17 @@ void PlatinumCtrl::write(uint32_t rgn_start, uint32_t offset, uint32_t value, in
this->reset_step = 0;
this->fb_reset = value;
this->half_access = !!(this->half_bank && value == 6);
if (this->fb_reset == 7) {
this->disable_display();
}
else if (this->fb_reset == 0) {
this->change_display();
}
else {
LOG_F(ERROR, "%s: display reset written with 0x%X", this->name.c_str(), value);
}
break;
case PlatinumReg::VRAM_REFRESH:
this->vram_refresh = value;
@ -320,6 +334,7 @@ void PlatinumCtrl::write(uint32_t rgn_start, uint32_t offset, uint32_t value, in
case PlatinumReg::SWATCH_VFP:
case PlatinumReg::SWATCH_VFPEQ:
this->swatch_params[REG_TO_INDEX(offset >> 4)] = value;
this->change_display();
break;
case PlatinumReg::TIMING_ADJUST:
this->timing_adjust = value;
@ -383,6 +398,10 @@ void PlatinumCtrl::map_phys_ram() {
// ====================== Framebuffer controller stuff =======================
void PlatinumCtrl::enable_display() {
bool did_size_change = false;
bool did_refresh_rate_change = false;
bool did_depth_change = false;
int clock_divisor = this->dacula->get_clock_div();
this->pixel_clock = this->dacula->get_dot_freq();
@ -409,6 +428,8 @@ void PlatinumCtrl::enable_display() {
this->vert_blank >>= 1;
}
if (new_width != this->active_width || new_height != this->active_height)
did_size_change = true;
this->active_width = new_width;
this->active_height = new_height;
@ -419,7 +440,10 @@ void PlatinumCtrl::enable_display() {
this->fb_ptr = &this->vram_ptr[this->fb_offset] + 16;
this->fb_pitch = this->row_words;
this->pixel_depth = this->dacula->get_pix_width();
int new_pixel_depth = this->dacula->get_pix_width();
if (new_pixel_depth != this->pixel_depth)
did_depth_change = true;
this->pixel_depth = new_pixel_depth;
// attach framebuffer conversion routine
switch (this->pixel_depth) {
@ -453,11 +477,21 @@ void PlatinumCtrl::enable_display() {
return;
}
this->refresh_rate = (double)(this->pixel_clock) / (this->hori_total * this->vert_total);
float new_refresh_rate = (double)(this->pixel_clock) / (this->hori_total * this->vert_total);
if (new_refresh_rate != this->refresh_rate)
did_refresh_rate_change = true;
this->refresh_rate = new_refresh_rate;
this->start_refresh_task();
LOG_F(INFO, "%s: video width=%d, height=%d", this->name.c_str(), new_width, new_height);
LOG_F(INFO, "%s: refresh rate set to %f Hz", this->name.c_str(), this->refresh_rate);
if (did_size_change)
LOG_F(INFO, "%s: video width=%d, height=%d", this->name.c_str(), new_width, new_height);
if (did_depth_change)
LOG_F(INFO, "%s: video depth=%d", this->name.c_str(), new_pixel_depth);
if (did_refresh_rate_change)
LOG_F(INFO, "%s: refresh rate set to %f Hz", this->name.c_str(), this->refresh_rate);
if (this->blank_on == true || this->crtc_on == false)
LOG_F(PLATINUM, "%s: display enabled", this->name.c_str());
this->blank_on = false;
this->crtc_on = true;
@ -468,6 +502,12 @@ void PlatinumCtrl::disable_display() {
this->blank_display();
}
void PlatinumCtrl::change_display() {
if (this->fb_reset == 0) {
this->enable_display();
}
}
void PlatinumCtrl::enable_cursor_int() {
if (!(this->swatch_int_mask & SWATCH_INT_CURSOR))
return;

1
devices/memctrl/platinum.h
View File

@ -222,6 +222,7 @@ public:
protected:
void enable_display();
void change_display();
void disable_display();
void enable_cursor_int();
void update_irq(uint8_t irq_line_state, uint8_t irq_mask);