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atirage: Fix Apple monitor extended sense codes.

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Now multi-sync displays should be usable with Beige G3.
This commit is contained in:
joevt 2024-11-06 19:02:14 -08:00 committed by dingusdev
parent f27b8ba1be
commit 6572bf8ce3
1 changed files with 2 additions and 0 deletions
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2
devices/video/atirage.cpp
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@ -440,8 +440,10 @@ void ATIRage::write_reg(uint32_t reg_offset, uint32_t value, uint32_t size) {
if (offset <= 1 && offset + size > 1) {
uint8_t gpio_levels = (new_value >> 8) & 0xFFU;
gpio_levels = ((gpio_levels & 0x30) >> 3) | (gpio_levels & 1);
gpio_levels ^= 7;
uint8_t gpio_dirs = (new_value >> 24) & 0xFFU;
gpio_dirs = ((gpio_dirs & 0x30) >> 3) | (gpio_dirs & 1);
gpio_levels &= ~gpio_dirs;
gpio_levels = this->disp_id->read_monitor_sense(gpio_levels, gpio_dirs);
insert_bits<uint32_t>(new_value,
((gpio_levels & 6) << 3) | (gpio_levels & 1), 8, 8);