Add PC Chips M773 machine

src/acpi.c

@@ -1619,7 +1619,10 @@ acpi_reset(void *priv)
     acpi_t *dev = (acpi_t *) priv;
 
     memset(&dev->regs, 0x00, sizeof(acpi_regs_t));
-    dev->regs.gpireg[0] = 0xff;
+    /* PC Chips M773:
+       - Bit 3: 80-conductor cable on unknown IDE channel (active low)
+       - Bit 1: 80-conductor cable on unknown IDE channel (active low) */
+    dev->regs.gpireg[0] = !strcmp(machine_get_internal_name(), "m773") ? 0xf5 : 0xff;
     dev->regs.gpireg[1] = 0xff;
     /* A-Trend ATC7020BXII:
        - Bit 3: 80-conductor cable on secondary IDE channel (active low)

src/include/86box/machine.h

@@ -755,6 +755,7 @@ extern int machine_at_s370slm_init(const machine_t *);
 
 extern int machine_at_cubx_init(const machine_t *);
 extern int machine_at_atc7020bxii_init(const machine_t *);
+extern int machine_at_m773_init(const machine_t *);
 extern int machine_at_ambx133_init(const machine_t *);
 extern int machine_at_awo671r_init(const machine_t *);
 extern int machine_at_63a1_init(const machine_t *);

src/machine/m_at_socket370.c

@@ -173,9 +173,8 @@ machine_at_p6bat_init(const machine_t *model)
     device_add(&sst_flash_39sf020_device);
     spd_register(SPD_TYPE_SDRAM, 0x7, 256);
 
-    if (sound_card_current[0] == SOUND_INTERNAL) {
+    if (sound_card_current[0] == SOUND_INTERNAL)
         device_add(&cmi8738_onboard_device);
-    }
 
     return ret;
 }
@@ -248,6 +247,44 @@ machine_at_atc7020bxii_init(const machine_t *model)
     return ret;
 }
 
+int
+machine_at_m773_init(const machine_t *model)
+{
+    int ret;
+
+    ret = bios_load_linear("roms/machines/m773/010504s.rom",
+                           0x000c0000, 262144, 0);
+
+    if (bios_only || !ret)
+        return ret;
+
+    machine_at_common_init_ex(model, 2);
+
+    pci_init(PCI_CONFIG_TYPE_1);
+    pci_register_slot(0x00, PCI_CARD_NORTHBRIDGE, 0, 0, 0, 0);
+    pci_register_slot(0x07, PCI_CARD_SOUTHBRIDGE, 1, 2, 3, 4);
+    pci_register_slot(0x0C, PCI_CARD_SOUND,       4, 3, 0, 0);
+    pci_register_slot(0x09, PCI_CARD_NORMAL,      1, 2, 3, 4);
+    pci_register_slot(0x0A, PCI_CARD_NORMAL,      2, 3, 4, 1);
+    pci_register_slot(0x0B, PCI_CARD_NORMAL,      3, 4, 1, 2);
+    pci_register_slot(0x0D, PCI_CARD_NORMAL,      4, 1, 2, 3);
+    pci_register_slot(0x01, PCI_CARD_AGPBRIDGE,   1, 2, 3, 4);
+    device_add(&i440bx_device);
+    device_add(&slc90e66_device);
+    device_add(&keyboard_ps2_ami_pci_device);
+    device_add(&it8671f_device);
+    device_add(&sst_flash_39sf020_device);
+    spd_register(SPD_TYPE_SDRAM, 0x3, 256);
+    device_add(&gl520sm_2d_device); /* fans: CPU, Chassis; temperature: System */
+    hwm_values.voltages[0] = 3300;  /* Vcore and 3.3V are swapped */
+    hwm_values.voltages[2] = hwm_get_vcore();
+
+    if (sound_card_current[0] == SOUND_INTERNAL)
+        device_add(&cmi8738_onboard_device);
+
+    return ret;
+}
+
 int
 machine_at_ambx133_init(const machine_t *model)
 {

src/machine/machine_table.c

@@ -163,7 +163,6 @@ const machine_filter_t machine_chipsets[] = {
 };
 
 /* Machines to add before machine freeze:
-   - PCChips M773 (440BX + SMSC with AMI BIOS);
    - TMC Mycomp PCI54ST;
    - Zeos Quadtel 486.
 
@@ -13163,6 +13162,47 @@ const machine_t machines[] = {
         .snd_device = NULL,
         .net_device = NULL
     },
+    /* Has an ITE IT8671F Super I/O chip with on-chip KBC with AMIKey-2 KBC
+       firmware. */
+    {
+        .name = "[SMSC VictoryBX-66] PC Chips M773",
+        .internal_name = "m773",
+        .type = MACHINE_TYPE_SOCKET370,
+        .chipset = MACHINE_CHIPSET_SMSC_VICTORYBX_66,
+        .init = machine_at_m773_init,
+        .p1_handler = NULL,
+        .gpio_handler = NULL,
+        .available_flag = MACHINE_AVAILABLE,
+        .gpio_acpi_handler = NULL,
+        .cpu = {
+            .package = CPU_PKG_SOCKET370,
+            .block = CPU_BLOCK_NONE,
+            .min_bus = 66666667,
+            .max_bus = 133333333,
+            .min_voltage = 1300,
+            .max_voltage = 3500,
+            .min_multi = 1.5,
+            .max_multi = 8.0
+        },
+        .bus_flags = MACHINE_PS2_AGP,
+        .flags = MACHINE_IDE_DUAL | MACHINE_SOUND | MACHINE_APM | MACHINE_ACPI,
+        .ram = {
+            .min = 8192,
+            .max = 524288,
+            .step = 8192
+        },
+        .nvrmask = 255,
+        .kbc_device = NULL,
+        .kbc_p1 = 0xff,
+        .gpio = 0xffffffff,
+        .gpio_acpi = 0xffffffff,
+        .device = NULL,
+        .fdc_device = NULL,
+        .sio_device = NULL,
+        .vid_device = NULL,
+        .snd_device = &cmi8738_onboard_device,
+        .net_device = NULL
+    },
 
     /* VIA Apollo Pro */
     /* Has the VIA VT82C586B southbridge with on-chip KBC identical to the VIA