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Added Cirrus Logic GD5428 emulation.

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As part of this, added emulation of the GD5428-based IBM 1MB SVGA Adapter/A,
along with support for external graphics cards on MCA platforms, adding the
ability to override the onboard VGA controller.
This commit is contained in:
SarahW 2020-02-01 16:30:34 +00:00
commit 68a2d8cb3c
14 changed files with 342 additions and 43 deletions
Download patch file Download diff file Expand all files Collapse all files

23
src/video.c
View file

@ -90,6 +90,7 @@ static VIDEO_CARD video_cards[] =
{"ATI VGA Charger (ATI-28800)", "ati28800", &ati28800_device, GFX_VGACHARGER, VIDEO_FLAG_TYPE_SPECIAL, {VIDEO_ISA, 3, 3, 6, 5, 5, 10}},
{"ATI VGA Edge-16 (ATI-18800)", "ati18800", &ati18800_device, GFX_VGAEDGE16, VIDEO_FLAG_TYPE_SPECIAL, {VIDEO_ISA, 8, 16, 32, 8, 16, 32}},
{"CGA", "cga", &cga_device, GFX_CGA, VIDEO_FLAG_TYPE_CGA, {VIDEO_ISA, 8, 16, 32, 8, 16, 32}},
{"Cirrus Logic CL-GD5428", "cl_gd5428", &gd5428_device, GFX_CL_GD5428, VIDEO_FLAG_TYPE_SPECIAL, {VIDEO_BUS, 4, 4, 8, 10, 10, 20}},
{"Cirrus Logic CL-GD5429", "cl_gd5429", &gd5429_device, GFX_CL_GD5429, VIDEO_FLAG_TYPE_SPECIAL, {VIDEO_BUS, 4, 4, 8, 10, 10, 20}},
{"Cirrus Logic CL-GD5430", "cl_gd5430", &gd5430_device, GFX_CL_GD5430, VIDEO_FLAG_TYPE_SPECIAL, {VIDEO_BUS, 4, 4, 8, 10, 10, 20}},
{"Cirrus Logic CL-GD5434", "cl_gd5434", &gd5434_device, GFX_CL_GD5434, VIDEO_FLAG_TYPE_SPECIAL, {VIDEO_BUS, 4, 4, 8, 10, 10, 20}},
@ -99,6 +100,7 @@ static VIDEO_CARD video_cards[] =
{"EGA", "ega", &ega_device, GFX_EGA, VIDEO_FLAG_TYPE_SPECIAL, {VIDEO_ISA, 8, 16, 32, 8, 16, 32}},
{"Hercules", "hercules", &hercules_device, GFX_HERCULES, VIDEO_FLAG_TYPE_MDA, {VIDEO_ISA, 8, 16, 32, 8, 16, 32}},
{"Hercules InColor", "incolor", &incolor_device, GFX_INCOLOR, VIDEO_FLAG_TYPE_MDA, {VIDEO_ISA, 8, 16, 32, 8, 16, 32}},
{"IBM 1MB SVGA Adapter/A (CL GD5428)", "ibm1mbsvga", &ibm_gd5428_device, GFX_IBM_GD5428, VIDEO_FLAG_TYPE_SPECIAL, {VIDEO_BUS, 4, 4, 8, 10, 10, 20}},
{"Image Manager 1024", "im1024", &im1024_device, GFX_IM1024, VIDEO_FLAG_TYPE_CGA, {VIDEO_ISA, 8, 16, 32, 8, 16, 32}},
{"Matrox Mystique", "mystique", &mystique_device, GFX_MYSTIQUE, VIDEO_FLAG_TYPE_SPECIAL, {VIDEO_BUS, 4, 4, 4, 10, 10, 10}},
{"MDA", "mda", &mda_device, GFX_MDA, VIDEO_FLAG_TYPE_MDA, {VIDEO_ISA, 8, 16, 32, 8, 16, 32}},
@ -218,13 +220,17 @@ device_t *video_card_getdevice(int card, int romset)
case ROM_IBMPS1_2011:
case ROM_IBMPS2_M30_286:
return &ps1vga_device;
case ROM_IBMPS2_M50:
case ROM_IBMPS2_M55SX:
case ROM_IBMPS2_M70_TYPE3:
case ROM_IBMPS2_M70_TYPE4:
case ROM_IBMPS2_M80:
return &ps1vga_device;
if (card == GFX_BUILTIN)
return &ps1vga_device;
break;
case ROM_IBMPS1_2121:
return &ps1_m2121_svga_device;
@ -588,12 +594,16 @@ void video_updatetiming()
case ROM_IBMPS1_2011:
case ROM_IBMPS2_M30_286:
timing = &timing_vga;
break;
case ROM_IBMPS2_M50:
case ROM_IBMPS2_M55SX:
case ROM_IBMPS2_M70_TYPE3:
case ROM_IBMPS2_M70_TYPE4:
case ROM_IBMPS2_M80:
timing = &timing_vga;
if (gfxcard == GFX_BUILTIN)
timing = &timing_vga;
break;
case ROM_IBMPS1_2121:
@ -776,13 +786,18 @@ void video_init()
case ROM_IBMPS1_2011:
case ROM_IBMPS2_M30_286:
device_add(&ps1vga_device);
return;
case ROM_IBMPS2_M50:
case ROM_IBMPS2_M55SX:
case ROM_IBMPS2_M70_TYPE3:
case ROM_IBMPS2_M70_TYPE4:
case ROM_IBMPS2_M80:
device_add(&ps1vga_device);
return;
if (gfxcard == GFX_BUILTIN)
return;
break;
case ROM_IBMPS1_2121:
device_add(&ps1_m2121_svga_device);