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Preliminary VIA Cyrix III emulation

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This adds preliminary emulation of the first-gen Samuel core, used in the VIA Cyrix III CPU, at clock speeds from 66 to 700 MHz. This also moves the 440BX emulation out of the dev-branch.

Things working:
- CPUID
- Windows 98SE
- Timings seem identical between WinChip/W2's integer section and this

Things left to do:
- 3DNow on old dynarec
- Half-speed FPU (currently simulated with WinChip 1 timings instead of WinChip 2)
This commit is contained in:
nerd73
2020-03-01 15:06:35 -07:00
parent 5c4542283d
commit 111d82fa0c
10 changed files with 267 additions and 113 deletions
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5
src/machine/machine_table.c
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@@ -61,7 +61,6 @@
#define MACHINE_CPUS_PENTIUM_SS7 MACHINE_CPUS_PENTIUM_S7
#endif
const machine_t machines[] = {
{ "[8088] AMI XT clone", "amixt", {{"Intel", cpus_8088}, {"", NULL}, {"", NULL}, {"", NULL}, {"", NULL}}, MACHINE_ISA, 64, 640, 64, 0, machine_xt_amixt_init, NULL },
{ "[8088] Compaq Portable", "portable", {{"Intel", cpus_8088}, {"", NULL}, {"", NULL}, {"", NULL}, {"", NULL}}, MACHINE_ISA | MACHINE_VIDEO, 128, 640, 128, 0, machine_xt_compaq_init, NULL },
@@ -237,7 +236,9 @@ const machine_t machines[] = {
{ "[Socket 8 FX] Tyan Titan-Pro AT", "440fx", {{"Intel", cpus_PentiumPro}, {"", NULL}, {"", NULL}, {"", NULL}, {"", NULL}}, MACHINE_PCI | MACHINE_ISA | MACHINE_AT | MACHINE_PS2 | MACHINE_HDC, 8, 1024, 8, 127, machine_at_i440fx_init, NULL },
{ "[Socket 8 FX] Tyan Titan-Pro ATX", "tpatx", {{"Intel", cpus_PentiumPro}, {"", NULL}, {"", NULL}, {"", NULL}, {"", NULL}}, MACHINE_PCI | MACHINE_ISA | MACHINE_AT | MACHINE_PS2 | MACHINE_HDC, 8, 1024, 8, 127, machine_at_s1668_init, NULL },
{ "[Slot 1 BX] Lucky Star 6ABX3", "6abx3", {{"Intel", cpus_PentiumII}, {"", NULL}, {"", NULL}, {"", NULL}, {"", NULL}}, MACHINE_PCI | MACHINE_ISA | MACHINE_AT | MACHINE_PS2 | MACHINE_HDC, 8, 1024, 8, 255, machine_at_6abx3_init, NULL },
{ "[Slot 1 BX] Lucky Star 6ABX3", "6abx3", {{"Intel", cpus_PentiumII}, {"VIA", cpus_Cyrix3},{"", NULL}, {"", NULL}, {"", NULL}}, MACHINE_PCI | MACHINE_ISA | MACHINE_AT | MACHINE_PS2 | MACHINE_HDC, 8, 768, 8, 255, machine_at_6abx3_init, NULL },
#else
{ "[Slot 1 BX] Lucky Star 6ABX3", "6abx3", {{"VIA", cpus_Cyrix3}, {"", NULL}, {"", NULL}, {"", NULL}, {"", NULL}}, MACHINE_PCI | MACHINE_ISA | MACHINE_AT | MACHINE_PS2 | MACHINE_HDC, 8, 768, 8, 255, machine_at_6abx3_init, NULL },
#endif
{ NULL, NULL, {{"", 0}, {"", 0}, {"", 0}, {"", 0}, {"", 0}}, 0, 0, 0, 0, 0, NULL, NULL }
};