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svga_s3: commented out dot clock selection for now, as it caused issues with win95. (no whatsnew)

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mahlemiut 2012-10-29 22:09:09 +00:00
parent 46fabfc886
commit a6a69e688d
1 changed files with 6 additions and 2 deletions
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8
src/emu/video/pc_vga.c
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@ -2702,7 +2702,7 @@ void s3_vga_device::s3_define_video_mode()
case 0x0d: svga.rgb32_en = 1; divisor = 2; break; case 0x0d: svga.rgb32_en = 1; divisor = 2; break;
default: fatalerror("TODO: s3 video mode not implemented %02x\n",((s3.ext_misc_ctrl_2) >> 4)); break; default: fatalerror("TODO: s3 video mode not implemented %02x\n",((s3.ext_misc_ctrl_2) >> 4)); break;
} }
switch(s3.cr42 & 0x0f) // TODO: confirm clock settings /* switch(s3.cr42 & 0x0f) // TODO: confirm clock settings
{ {
case 0: case 0:
xtal = XTAL_25_1748MHz; xtal = XTAL_25_1748MHz;
@ -2754,7 +2754,7 @@ void s3_vga_device::s3_define_video_mode()
break; break;
default: default:
xtal = 1000000; xtal = 1000000;
} }*/
} }
else else
{ {
@ -2763,6 +2763,8 @@ void s3_vga_device::s3_define_video_mode()
svga.rgb16_en = 0; svga.rgb16_en = 0;
svga.rgb32_en = 0; svga.rgb32_en = 0;
} }
// if((vga.miscellaneous_output & 0xc) != 0x0c)
xtal = (vga.miscellaneous_output & 0xc) ? XTAL_28_63636MHz : XTAL_25_1748MHz;
recompute_params_clock(divisor, xtal); recompute_params_clock(divisor, xtal);
} }
@ -3103,6 +3105,7 @@ READ8_MEMBER(ati_vga_device::port_03c0_r)
void ibm8514a_device::ibm8514_write_fg(UINT32 offset) void ibm8514a_device::ibm8514_write_fg(UINT32 offset)
{ {
address_space& space = machine().device("maincpu")->memory().space(AS_PROGRAM); address_space& space = machine().device("maincpu")->memory().space(AS_PROGRAM);
offset %= m_vga->vga.svga_intf.vram_size;
UINT8 dst = m_vga->mem_linear_r(space,offset,0xff); UINT8 dst = m_vga->mem_linear_r(space,offset,0xff);
UINT8 src = 0; UINT8 src = 0;
@ -3185,6 +3188,7 @@ void ibm8514a_device::ibm8514_write_fg(UINT32 offset)
void ibm8514a_device::ibm8514_write_bg(UINT32 offset) void ibm8514a_device::ibm8514_write_bg(UINT32 offset)
{ {
address_space& space = machine().device("maincpu")->memory().space(AS_PROGRAM); address_space& space = machine().device("maincpu")->memory().space(AS_PROGRAM);
offset %= m_vga->vga.svga_intf.vram_size;
UINT8 dst = m_vga->mem_linear_r(space,offset,0xff); UINT8 dst = m_vga->mem_linear_r(space,offset,0xff);
UINT8 src = 0; UINT8 src = 0;