Macintosh-Tools
/
dingusppc
mirror of https://github.com/dingusdev/dingusppc.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity

atimach64gx: Fix ATI_CRTC_GEN_CNTL. 

Add call to crtc_update.
Maybe consider AK and EN bits (placeholder for now).
This commit is contained in:
joevt 2024-02-28 15:23:31 -08:00 committed by dingusdev
parent 224ae50e91
commit 0b5a798343
1 changed files with 27 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

34
devices/video/atimach64gx.cpp
View File

@ -451,7 +451,32 @@ void AtiMach64Gx::write_reg(uint32_t reg_offset, uint32_t value, uint32_t size)
}
case ATI_CRTC_GEN_CNTL:
{
new_value = value;
uint32_t bits_AK =
#if 1
#else
(1 << ATI_CRTC_VSYNC_INT_AK) |
(1 << ATI_CRTC2_VSYNC_INT_AK) |
#endif
0;
/*
uint32_t bits_EN =
#if 1
#else
(1 << ATI_CRTC_VSYNC_INT_EN) |
(1 << ATI_CRTC2_VSYNC_INT_EN) |
#endif
0;
*/
uint32_t bits_AKed = bits_AK & value; // AK bits that are to be AKed
uint32_t bits_not_AKed = bits_AK & ~value; // AK bits that are not to be AKed
new_value = value & ~bits_AKed; // clear the AKed bits
uint32_t bits_read_only = bits_not_AKed; // the not AKed bits will remain unchanged
new_value = (old_value & bits_read_only) | (new_value & ~bits_read_only);
this->regs[reg_num] = new_value;
if (bit_changed(old_value, new_value, ATI_CRTC_DISPLAY_DIS)) {
if (bit_set(new_value, ATI_CRTC_DISPLAY_DIS)) {
this->blank_on = true;
@ -462,12 +487,7 @@ void AtiMach64Gx::write_reg(uint32_t reg_offset, uint32_t value, uint32_t size)
}
if (bit_changed(old_value, new_value, ATI_CRTC_ENABLE)) {
if (!bit_set(new_value, ATI_CRTC_ENABLE)) {
this->blank_on = true;
this->blank_display();
} else {
this->blank_on = false;
}
this->crtc_update();
}
break;
}