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dingusppc/devices/video/sixty6.cpp

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sixty6: Add support for sixty6 video output.
2023-12-07 01:24:42 +00:00
/*
DingusPPC - The Experimental PowerPC Macintosh emulator
Copyright (C) 2018-24 divingkatae and maximum
(theweirdo) spatium
(Contact divingkatae#1017 or powermax#2286 on Discord for more info)
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
/** @file TNT on-board NTSC/PAL video output emulation. */
#include <devices/video/sixty6.h>
#include <devices/video/control.h>
#include <devices/common/i2c/saa7187.h>
#include <devices/common/machineid.h>
#include <devices/deviceregistry.h>
#include <machines/machinebase.h>
namespace loguru {
enum : Verbosity {
Verbosity_SIXTY6 = loguru::Verbosity_9,
Verbosity_SIXTY6_EXTRA = loguru::Verbosity_9,
Verbosity_SIXTY6_INTERRUPT = loguru::Verbosity_9
};
}
Sixty6Video::Sixty6Video()
{
// initialize the video clock generator
this->saa7187 = std::unique_ptr<Saa7187VideoEncoder> (new Saa7187VideoEncoder(0x44));
// register the video clock generator with the I2C host
I2CBus* i2c_bus = dynamic_cast<I2CBus*>(gMachineObj->get_comp_by_type(HWCompType::I2C_HOST));
i2c_bus->register_device(0x44, this->saa7187.get());
// get (raw) pointer to the I/O controller
GrandCentral* gc_obj = dynamic_cast<GrandCentral*>(gMachineObj->get_comp_by_name("GrandCentral"));
// attach IOBus Device #3 0xF301C000 ; sixty6
gc_obj->attach_iodevice(2, this);
// attach IOBus Device #5 0xF301E000 ; sixty6 composite/s-video
gMachineObj->add_device("BoardReg66", std::unique_ptr<BoardRegister>(
new BoardRegister("Board Register 66",
((GET_BIN_PROP("has_svideo") ^ 1) << 6) | // S-Video connected (active low)
((GET_BIN_PROP("has_composite") ^ 1) << 7) | // Composite Video connected (active low)
0xFF3FU // pull up unused bits
)));
gc_obj->attach_iodevice(4, dynamic_cast<BoardRegister*>(gMachineObj->get_comp_by_name("BoardReg66")));
}
uint16_t Sixty6Video::iodev_read(uint32_t address)
{
uint16_t value;
switch (address & 3) {
case Sixty6BaseReg::CLUT_DATA:
if (this->comp_index == 0) {
uint8_t a;
get_palette_color(this->clut_addr, clut_color[0], clut_color[1], clut_color[2], a);
}
value = this->clut_color[this->comp_index];
LOG_F(SIXTY6, "Sixty6: read %d:CLUT_DATA 0x%02x.%c = %02x", address, this->clut_addr, "rgb"[comp_index], value);
this->comp_index++;
if (this->comp_index >= 3) {
this->clut_addr++; // auto-increment CLUT address
this->comp_index = 0;
}
break;
case Sixty6BaseReg::CLUT_ADDR:
value = this->clut_addr;
LOG_F(SIXTY6, "Sixty6: read %d:CLUT_ADDR = %02x", address, value);
break;
case Sixty6BaseReg::CONTROL_DATA:
switch (this->control_addr) {
case Sixty6Reg::CONTROL_1:
value = this->control_1;
if (last_control_1_value == value) {
last_control_1_count++;
} else {
if (last_control_1_count) {
LOG_F(SIXTY6_INTERRUPT, "Sixty6: read %d:CONTROL_1 = %02x x %d", address, last_control_1_value, last_control_1_count);
}
last_control_1_value = value;
last_control_1_count = 0;
LOG_F(SIXTY6_INTERRUPT, "Sixty6: read %d:CONTROL_1 = %02x x %d", address, last_control_1_value, last_control_1_count);
}
break;
default:
value = 0;
LOG_F(ERROR, "Sixty6: read %d:CONTROL_DATA 0x%02x = %02x", address, this->control_addr, value);
}
break;
case Sixty6BaseReg::CONTROL_ADDR:
value = this->control_addr;
LOG_F(SIXTY6_INTERRUPT, "Sixty6: read %d:CONTROL_ADDR = %02x", address, value);
break;
}
return value;
}
void Sixty6Video::iodev_write(uint32_t address, uint16_t value)
{
switch (address & 3) {
case Sixty6BaseReg::CLUT_DATA:
if (this->comp_index == 0) {
uint8_t a;
get_palette_color(this->clut_addr, clut_color[0], clut_color[1], clut_color[2], a);
}
LOG_F(SIXTY6, "Sixty6: write %d:CLUT_DATA 0x%02x.%c = %02x", address, this->clut_addr, "rgb"[comp_index], value);
this->clut_color[this->comp_index++] = value;
if (this->comp_index >= 3) {
this->set_palette_color(this->clut_addr, clut_color[0],
clut_color[1], clut_color[2], 0xFF);
this->clut_addr++; // auto-increment CLUT address
this->comp_index = 0;
}
break;
case Sixty6BaseReg::CLUT_ADDR:
LOG_F(SIXTY6, "Sixty6: write %d:CLUT_ADDR = %02x", address, value);
this->clut_addr = value;
this->comp_index = 0;
break;
case Sixty6BaseReg::CONTROL_DATA:
switch (this->control_addr) {
case Sixty6Reg::REG_V1O_L:
this->v1_odd = (this->v1_odd & 0xff00) | (value & 0xff);
this->changed = true;
LOG_F(SIXTY6, "Sixty6: write %d:REG_V1O_L = %02x V1_odd = %d", address, value, this->v1_odd);
break;
case Sixty6Reg::REG_V1O_H:
this->v1_odd = (value << 8) | (this->v1_odd & 0xff);
this->changed = true;
LOG_F(SIXTY6, "Sixty6: write %d:REG_V1O_H = %02x V1_odd = %d", address, value, this->v1_odd);
break;
case Sixty6Reg::REG_V2O_L:
this->v2_odd = (this->v2_odd & 0xff00) | (value & 0xff);
this->changed = true;
LOG_F(SIXTY6, "Sixty6: write %d:REG_V2O_L = %02x V2_odd = %d", address, value, this->v2_odd);
break;
case Sixty6Reg::REG_V2O_H:
this->v2_odd = (value << 8) | (this->v2_odd & 0xff);
this->changed = true;
LOG_F(SIXTY6, "Sixty6: write %d:REG_V2O_H = %02x V2_odd = %d", address, value, this->v2_odd);
break;
case Sixty6Reg::REG_V1E_L:
this->v1_even = (this->v1_even & 0xff00) | (value & 0xff);
this->changed = true;
LOG_F(SIXTY6, "Sixty6: write %d:REG_V1E_L = %02x v1_even = %d", address, value, this->v1_even);
break;
case Sixty6Reg::REG_V1E_H:
this->v1_even = (value << 8) | (this->v1_even & 0xff);
this->changed = true;
LOG_F(SIXTY6, "Sixty6: write %d:REG_V1E_H = %02x v1_even = %d", address, value, this->v1_even);
break;
case Sixty6Reg::REG_V2E_L:
this->v2_even = (this->v2_even & 0xff00) | (value & 0xff);
this->changed = true;
LOG_F(SIXTY6, "Sixty6: write %d:REG_V2E_L = %02x v2_even = %d", address, value, this->v2_even);
break;
case Sixty6Reg::REG_V2E_H:
this->v2_even = (value << 8) | (this->v2_even & 0xff);
this->changed = true;
LOG_F(SIXTY6, "Sixty6: write %d:REG_V2E_H = %02x v2_even = %d", address, value, this->v2_even);
break;
case Sixty6Reg::REG_H1_L:
this->h1 = (this->h1 & 0xff00) | (value & 0xff);
this->changed = true;
LOG_F(SIXTY6, "Sixty6: write %d:REG_H1_L = %02x h1 = %d", address, value, this->h1);
break;
case Sixty6Reg::REG_H1_H:
this->h1 = (value << 8) | (this->h1 & 0xff);
this->changed = true;
LOG_F(SIXTY6, "Sixty6: write %d:REG_H1_H = %02x h1 = %d", address, value, this->h1);
break;
case Sixty6Reg::REG_H2_L:
this->h2 = (this->h2 & 0xff00) | (value & 0xff);
this->changed = true;
LOG_F(SIXTY6, "Sixty6: write %d:REG_H2_L = %02x h2 = %d", address, value, this->h2);
break;
case Sixty6Reg::REG_H2_H:
this->h2 = (value << 8) | (this->h2 & 0xff);
this->changed = true;
LOG_F(SIXTY6, "Sixty6: write %d:REG_H2_H = %02x h2 = %d", address, value, this->h2);
break;
case Sixty6Reg::BASE_ADDR_L:
this->base_addr = (this->base_addr & 0xffff00) | (value & 0xff);
this->changed = true;
LOG_F(SIXTY6, "Sixty6: write %d:BASE_ADDR_L = %02x base_addr = %06x", address, value, this->base_addr);
break;
case Sixty6Reg::BASE_ADDR_M:
this->base_addr = (value << 8) | (this->base_addr & 0xff00ff);
this->changed = true;
LOG_F(SIXTY6, "Sixty6: write %d:BASE_ADDR_M = %02x base_addr = %06x", address, value, this->base_addr);
break;
case Sixty6Reg::BASE_ADDR_H:
this->base_addr = (value << 16) | (this->base_addr & 0x00ffff);
this->changed = true;
LOG_F(SIXTY6, "Sixty6: write %d:BASE_ADDR_H = %02x base_addr = %06x", address, value, this->base_addr);
break;
case Sixty6Reg::PITCH_L:
this->pitch = (this->pitch & 0xff00) | (value & 0xff);
this->changed = true;
LOG_F(SIXTY6, "Sixty6: write %d:PITCH_L = %02x pitch = %d", address, value, this->pitch);
break;
case Sixty6Reg::PITCH_H:
this->pitch = (value << 8) | (this->pitch & 0xff);
this->changed = true;
LOG_F(SIXTY6, "Sixty6: write %d:PITCH_H = %02x pitch = %d", address, value, this->pitch);
break;
case Sixty6Reg::CURSOR_X_L:
this->cursor_x = (this->cursor_x & 0xff00) | (value & 0xff);
LOG_F(SIXTY6, "Sixty6: write %d:CURSOR_X_L = %02x cursor_x = %d", address, value, this->cursor_x);
break;
case Sixty6Reg::CURSOR_X_H:
this->cursor_x = (value << 8) | (this->cursor_x & 0xff);
LOG_F(SIXTY6, "Sixty6: write %d:CURSOR_X_H = %02x cursor_x = %d", address, value, this->cursor_x);
break;
case Sixty6Reg::CURSOR_Y_L:
this->cursor_y = (this->cursor_y & 0xff00) | (value & 0xff);
LOG_F(SIXTY6, "Sixty6: write %d:CURSOR_Y_L = %02x cursor_y = %d", address, value, this->cursor_y);
break;
case Sixty6Reg::CURSOR_Y_H:
this->cursor_y = (value << 8) | (this->cursor_y & 0xff);
LOG_F(SIXTY6, "Sixty6: write %d:CURSOR_Y_H = %02x cursor_y = %d", address, value, this->cursor_y);
break;
case Sixty6Reg::INT_COUNT_L:
this->int_count = (this->int_count & 0xff00) | (value & 0xff);
LOG_F(SIXTY6, "Sixty6: write %d:INT_COUNT_L = %02x int_count = %d", address, value, this->int_count);
break;
case Sixty6Reg::INT_COUNT_H:
this->int_count = (value << 8) | (this->int_count & 0xff);
LOG_F(SIXTY6, "Sixty6: write %d:INT_COUNT_H = %02x int_count = %d", address, value, this->int_count);
break;
case Sixty6Reg::CONTROL_1:
{
if (this->changed) {
if (value & 2) {
LOG_F(SIXTY6, "Sixty6: write %d:CONTROL_1 = %02x -> %02x", address, value, value & ~2);
} else {
LOG_F(SIXTY6, "Sixty6: write %d:CONTROL_1 = %02x", address, value);
}
}
else {
if (value & 2) {
LOG_F(SIXTY6_INTERRUPT, "Sixty6: write %d:CONTROL_1 = %02x -> %02x", address, value, value & ~2);
} else {
LOG_F(SIXTY6_INTERRUPT, "Sixty6: write %d:CONTROL_1 = %02x", address, value);
}
}
this->control_1 = value & ~2; // we don't support hardware cursor
if (this->control_1 & 0x40) {
this->interrupt_enabled = true;
}
else {
/*
If you disable interrupts then startup may hang which means we
aren't doing interrupts properly.
We need interrupts to move mouse while it is positioned on the
Sixty6 display.
*/
// this->interrupt_enabled = false;
}
int new_pixel_format = (this->control_1 >> 4) & 3;
if (new_pixel_format != this->pixel_format)
this->changed = true;
if (1 || (value & 0x49) == 0x49) {
if (this->changed) {
this->enable_display();
this->changed = false;
}
}
else {
//this->disable_display();
}
break;
}
case Sixty6Reg::CONTROL_2:
this->control_2 = value;
LOG_F(SIXTY6, "Sixty6: write %d:CONTROL_2 = %02x", address, value);
break;
default:
LOG_F(ERROR, "Sixty6: write %d:CONTROL_DATA 0x%02x = %02x", address, this->control_addr, value);
}
break;
case Sixty6BaseReg::CONTROL_ADDR:
LOG_F(SIXTY6_EXTRA, "Sixty6: write %d:CONTROL_ADDR = %02x", address, value);
this->control_addr = value;
break;
}
}
void Sixty6Video::enable_display()
{
int new_width, new_height, clk_divisor;
// get pixel frequency from Saa7187
this->pixel_clock = 25000000; // this->saa7187->get_dot_freq();
// calculate active_width and active_height from video timing parameters
new_width = this->h2 - this->h1;
new_height = (this->v2_odd - this->v1_odd + this->v2_even - this->v1_even + 1) & ~1;
if (this->control_1 & 4) {
// zoom mode
new_width >>= 1;
new_height >>= 1;
}
this->active_width = new_width;
this->active_height = new_height;
// set framebuffer parameters
this->fb_ptr = &control_video->GetVram()[(this->base_addr << 3) & 0x3fffff]; // why does (this->base_addr << 3) == 0x4C00C20?
this->fb_pitch = this->pitch << 3;
this->pixel_format = (this->control_1 >> 4) & 3;
// get pixel depth
switch (this->pixel_format) {
case 1:
this->pixel_depth = 8;
this->convert_fb_cb = [this](uint8_t *dst_buf, int dst_pitch) {
this->convert_frame_8bpp_indexed(dst_buf, dst_pitch);
};
break;
case 2:
this->pixel_depth = 16;
this->convert_fb_cb = [this](uint8_t *dst_buf, int dst_pitch) {
this->convert_frame_15bpp_BE(dst_buf, dst_pitch);
};
break;
default:
LOG_F(ERROR, "Sixty6: Invalid pixel format %d!", this->pixel_format);
// fallthrough
case 3:
this->pixel_depth = 32;
this->convert_fb_cb = [this](uint8_t *dst_buf, int dst_pitch) {
this->convert_frame_32bpp_BE(dst_buf, dst_pitch);
};
break;
}
// calculate display refresh rate
if (this->v2_odd > 256)
this->refresh_rate = 50.0;
else
this->refresh_rate = 60.0;
this->hori_blank = this->h1;
this->vert_blank = this->v1_odd + this->v1_even;
this->hori_total = this->h2;
this->vert_total = this->v2_odd + v2_even;
this->stop_refresh_task();
// set up periodic timer for display updates
if (this->active_width > 0 && this->active_height > 0 && this->pixel_clock > 0) {
LOG_F(INFO, "Sixty6: refresh rate set to %f Hz", this->refresh_rate);
this->start_refresh_task();
this->blank_on = false;
LOG_F(INFO, "Sixty6: display enabled");
this->crtc_on = true;
}
else {
LOG_F(INFO, "Sixty6: display not enabled");
this->blank_on = true;
this->crtc_on = false;
}
}
void Sixty6Video::disable_display()
{
this->crtc_on = false;
LOG_F(INFO, "Sixty6: display disabled");
}
int Sixty6Video::device_postinit()
{
this->int_ctrl = dynamic_cast<InterruptCtrl*>(
gMachineObj->get_comp_by_type(HWCompType::INT_CTRL));
this->irq_id = this->int_ctrl->register_dev_int(IntSrc::SIXTY6);
this->vbl_cb = [this](uint8_t irq_line_state) {
if (irq_line_state)
this->control_1 |= 0x80;
else
this->control_1 &= ~0x80;
LOG_F(SIXTY6_INTERRUPT, "Sixty6: interrupt state:%d doit:%d", irq_line_state, ((this->control_1 & 0x40) && this->crtc_on));
if (this->interrupt_enabled && this->crtc_on) {
//this->pci_interrupt(irq_line_state);
this->int_ctrl->ack_int(this->irq_id, irq_line_state);
}
};
this->control_video = dynamic_cast<ControlVideo*>(
gMachineObj->get_comp_by_name("ControlVideo"));
return 0;
}
// ========================== Device registry stuff ==========================
static const PropMap Sixty6_Properties = {
{"has_composite",
new BinProperty(0)},
{"has_svideo",
new BinProperty(0)},
};
static const DeviceDescription Sixty6_Descriptor = {
Sixty6Video::create, {}, Sixty6_Properties
};
REGISTER_DEVICE(Sixty6Video, Sixty6_Descriptor);
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