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Addressing Black screen in Descent II: Destination Quartzon 3dfx OEM with Voodoo #238

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This commit is contained in:
Shwartsman 2024-01-24 17:04:21 +02:00
parent 995e8fb6c6
commit 437ddc96fc
1 changed files with 5 additions and 2 deletions
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7
bochs/iodev/display/voodoo.cc
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@ -1004,9 +1004,12 @@ void bx_voodoo_1_2_c::after_restore_state(void)
bool bx_voodoo_1_2_c::mem_read_handler(bx_phy_address addr, unsigned len,
void *data, void *param)
{
Bit32u *data_ptr = (Bit32u*)data;
Bit32u val = voodoo_r((addr>>2) & 0x3FFFFF);
if (len == 4)
*(Bit32u*)data = val;
else if (len == 1)
*(Bit8u*)data = val >> ((addr & 3) * 8);
*data_ptr = voodoo_r((addr>>2) & 0x3FFFFF);
return 1;
}