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atimach64gx: Add write CRTC_INT_CNTL. 

Required for interrupt handling.
This commit is contained in:
joevt 2024-02-28 15:51:20 -08:00 committed by dingusdev
parent 2daad2d223
commit 81f3b95914
1 changed files with 69 additions and 0 deletions
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69
devices/video/atimach64gx.cpp
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@ -380,7 +380,76 @@ void AtiMach64Gx::write_reg(uint32_t reg_offset, uint32_t value, uint32_t size)
new_value = value;
this->fb_pitch = extract_bits<uint32_t>(new_value, ATI_CRTC_PITCH, ATI_CRTC_PITCH_size) * 8;
this->fb_ptr = &this->vram_ptr[extract_bits<uint32_t>(new_value, ATI_CRTC_OFFSET, ATI_CRTC_OFFSET_size) * 8];
return;
case ATI_CRTC_INT_CNTL:
{
uint32_t bits_read_only =
(1 << ATI_CRTC_VBLANK) |
(1 << ATI_CRTC_VLINE_SYNC) |
(1 << ATI_CRTC_FRAME) |
#if 1
#else
(1 << ATI_CRTC2_VBLANK) |
(1 << ATI_CRTC2_VLINE_SYNC) |
#endif
0;
uint32_t bits_AK =
(1 << ATI_CRTC_VBLANK_INT_AK) |
(1 << ATI_CRTC_VLINE_INT_AK) |
#if 1
(1 << ATI_VIDEOIN_EVEN_INT_AK) |
(1 << ATI_VIDEOIN_ODD_INT_AK) |
(1 << ATI_OVERLAY_EOF_INT_AK) |
(1 << ATI_VMC_EC_INT_AK) |
#else
(1 << ATI_SNAPSHOT_INT_AK) |
(1 << ATI_I2C_INT_AK) |
(1 << ATI_CRTC2_VBLANK_INT_AK) |
(1 << ATI_CRTC2_VLINE_INT_AK) |
(1 << ATI_CUPBUF0_INT_AK) |
(1 << ATI_CUPBUF1_INT_AK) |
(1 << ATI_OVERLAY_EOF_INT_AK) |
(1 << ATI_ONESHOT_CAP_INT_AK) |
(1 << ATI_BUSMASTER_EOL_INT_AK) |
(1 << ATI_GP_INT_AK) |
(1 << ATI_SNAPSHOT2_INT_AK) |
(1 << ATI_VBLANK_BIT2_INT_AK) |
#endif
0;
/*
uint32_t bits_EN =
(1 << ATI_CRTC_VBLANK_INT_EN) |
(1 << ATI_CRTC_VLINE_INT_EN) |
#if 1
(1 << ATI_VIDEOIN_EVEN_INT_EN) |
(1 << ATI_VIDEOIN_ODD_INT_EN) |
(1 << ATI_OVERLAY_EOF_INT_EN) |
(1 << ATI_VMC_EC_INT_EN) |
#else
(1 << ATI_SNAPSHOT_INT_EN) |
(1 << ATI_I2C_INT_EN) |
(1 << ATI_CRTC2_VBLANK_INT_EN) |
(1 << ATI_CRTC2_VLINE_INT_EN) |
(1 << ATI_CUPBUF0_INT_EN) |
(1 << ATI_CUPBUF1_INT_EN) |
(1 << ATI_OVERLAY_EOF_INT_EN) |
(1 << ATI_ONESHOT_CAP_INT_EN) |
(1 << ATI_BUSMASTER_EOL_INT_EN) |
(1 << ATI_GP_INT_EN) |
(1 << ATI_SNAPSHOT2_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
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);
break;
}
case ATI_CRTC_GEN_CNTL:
{
new_value = value;