diff --git a/include/hw/boards.h b/include/hw/boards.h
index 605a970..709b582 100644
--- a/include/hw/boards.h
+++ b/include/hw/boards.h
@@ -134,4 +134,165 @@ struct MachineState {
     const char *cpu_model;
 };
 
+
+/* Macros for compat_props corresponding to specific QEMU versions: */
+
+#define QEMU_COMPAT_2_0 \
+    {\
+        .driver   = "virtio-scsi-pci",\
+        .property = "any_layout",\
+        .value    = "off",\
+    },\
+    {\
+        .driver   = "apic",\
+        .property = "version",\
+        .value    = stringify(0x11),\
+    },\
+    {\
+        .driver   = "nec-usb-xhci",\
+        .property = "superspeed-ports-first",\
+        .value    = "off",\
+    },\
+    {\
+        .driver   = "pci-serial",\
+        .property = "prog_if",\
+        .value    = stringify(0),\
+    },\
+    {\
+        .driver   = "pci-serial-2x",\
+        .property = "prof_if",\
+        .value    = stringify(0),\
+    },\
+    {\
+        .driver   = "pci-serial-4x",\
+        .property = "prog_if",\
+        .value    = stringify(0),\
+    },\
+    {\
+        .driver   = "virtio-net-pci",\
+        .property = "guest_announce",\
+        .value    = "off",\
+    }
+
+#define QEMU_COMPAT_1_7 \
+    {\
+        .driver   = TYPE_USB_DEVICE,\
+        .property = "msos-desc",\
+        .value    = "no",\
+    }
+
+#define QEMU_COMPAT_1_6 \
+    {\
+        .driver   = "e1000",\
+        .property = "mitigation",\
+        .value    = "off",\
+    },{\
+        .driver   = "qemu64-" TYPE_X86_CPU,\
+        .property = "model",\
+        .value    = stringify(2),\
+    },{\
+        .driver   = "qemu32-" TYPE_X86_CPU,\
+        .property = "model",\
+        .value    = stringify(3),\
+    }
+
+#define QEMU_COMPAT_1_5 \
+    {\
+        .driver   = "Conroe-" TYPE_X86_CPU,\
+        .property = "model",\
+        .value    = stringify(2),\
+    },{\
+        .driver   = "Conroe-" TYPE_X86_CPU,\
+        .property = "level",\
+        .value    = stringify(2),\
+    },{\
+        .driver   = "Penryn-" TYPE_X86_CPU,\
+        .property = "model",\
+        .value    = stringify(2),\
+    },{\
+        .driver   = "Penryn-" TYPE_X86_CPU,\
+        .property = "level",\
+        .value    = stringify(2),\
+    },{\
+        .driver   = "Nehalem-" TYPE_X86_CPU,\
+        .property = "model",\
+        .value    = stringify(2),\
+    },{\
+        .driver   = "Nehalem-" TYPE_X86_CPU,\
+        .property = "level",\
+        .value    = stringify(2),\
+    },{\
+        .driver   = "virtio-net-pci",\
+        .property = "any_layout",\
+        .value    = "off",\
+    },{\
+        .driver = TYPE_X86_CPU,\
+        .property = "pmu",\
+        .value = "on",\
+    }
+
+#define QEMU_COMPAT_1_4 \
+    {\
+        .driver   = "scsi-hd",\
+        .property = "discard_granularity",\
+        .value    = stringify(0),\
+    },{\
+        .driver   = "scsi-cd",\
+        .property = "discard_granularity",\
+        .value    = stringify(0),\
+    },{\
+        .driver   = "scsi-disk",\
+        .property = "discard_granularity",\
+        .value    = stringify(0),\
+    },{\
+        .driver   = "ide-hd",\
+        .property = "discard_granularity",\
+        .value    = stringify(0),\
+    },{\
+        .driver   = "ide-cd",\
+        .property = "discard_granularity",\
+        .value    = stringify(0),\
+    },{\
+        .driver   = "ide-drive",\
+        .property = "discard_granularity",\
+        .value    = stringify(0),\
+    },{\
+        .driver   = "virtio-blk-pci",\
+        .property = "discard_granularity",\
+        .value    = stringify(0),\
+    },{\
+        .driver   = "virtio-serial-pci",\
+        .property = "vectors",\
+        /* DEV_NVECTORS_UNSPECIFIED as a uint32_t string */\
+        .value    = stringify(0xFFFFFFFF),\
+    },{ \
+        .driver   = "virtio-net-pci", \
+        .property = "ctrl_guest_offloads", \
+        .value    = "off", \
+    },{\
+        .driver   = "e1000",\
+        .property = "romfile",\
+        .value    = "pxe-e1000.rom",\
+    },{\
+        .driver   = "ne2k_pci",\
+        .property = "romfile",\
+        .value    = "pxe-ne2k_pci.rom",\
+    },{\
+        .driver   = "pcnet",\
+        .property = "romfile",\
+        .value    = "pxe-pcnet.rom",\
+    },{\
+        .driver   = "rtl8139",\
+        .property = "romfile",\
+        .value    = "pxe-rtl8139.rom",\
+    },{\
+        .driver   = "virtio-net-pci",\
+        .property = "romfile",\
+        .value    = "pxe-virtio.rom",\
+    },{\
+        .driver   = "486-" TYPE_X86_CPU,\
+        .property = "model",\
+        .value    = stringify(0),\
+    }
+
 #endif
diff --git a/include/hw/i386/pc.h b/include/hw/i386/pc.h
index d988b80..631afe7 100644
--- a/include/hw/i386/pc.h
+++ b/include/hw/i386/pc.h
@@ -295,52 +295,15 @@ int e820_get_num_entries(void);
 bool e820_get_entry(int, uint32_t, uint64_t *, uint64_t *);
 
 #define PC_COMPAT_2_0 \
+        QEMU_COMPAT_2_0,\
         {\
-            .driver   = "virtio-scsi-pci",\
-            .property = "any_layout",\
-            .value    = "off",\
-        },{\
             .driver   = "PIIX4_PM",\
             .property = "memory-hotplug-support",\
             .value    = "off",\
-        },\
-        {\
-            .driver   = "apic",\
-            .property = "version",\
-            .value    = stringify(0x11),\
-        },\
-        {\
-            .driver   = "nec-usb-xhci",\
-            .property = "superspeed-ports-first",\
-            .value    = "off",\
-        },\
-        {\
-            .driver   = "pci-serial",\
-            .property = "prog_if",\
-            .value    = stringify(0),\
-        },\
-        {\
-            .driver   = "pci-serial-2x",\
-            .property = "prof_if",\
-            .value    = stringify(0),\
-        },\
-        {\
-            .driver   = "pci-serial-4x",\
-            .property = "prog_if",\
-            .value    = stringify(0),\
-        },\
-        {\
-            .driver   = "virtio-net-pci",\
-            .property = "guest_announce",\
-            .value    = "off",\
         }
 
 #define PC_COMPAT_1_7 \
-        {\
-            .driver   = TYPE_USB_DEVICE,\
-            .property = "msos-desc",\
-            .value    = "no",\
-        },\
+        QEMU_COMPAT_1_7,\
         {\
             .driver   = "PIIX4_PM",\
             .property = "acpi-pci-hotplug-with-bridge-support",\
@@ -348,19 +311,8 @@ bool e820_get_entry(int, uint32_t, uint64_t *, uint64_t *);
         }
 
 #define PC_COMPAT_1_6 \
+        QEMU_COMPAT_1_6,\
         {\
-            .driver   = "e1000",\
-            .property = "mitigation",\
-            .value    = "off",\
-        },{\
-            .driver   = "qemu64-" TYPE_X86_CPU,\
-            .property = "model",\
-            .value    = stringify(2),\
-        },{\
-            .driver   = "qemu32-" TYPE_X86_CPU,\
-            .property = "model",\
-            .value    = stringify(3),\
-        },{\
             .driver   = "i440FX-pcihost",\
             .property = "short_root_bus",\
             .value    = stringify(1),\
@@ -371,39 +323,8 @@ bool e820_get_entry(int, uint32_t, uint64_t *, uint64_t *);
         }
 
 #define PC_COMPAT_1_5 \
+        QEMU_COMPAT_1_7,\
         {\
-            .driver   = "Conroe-" TYPE_X86_CPU,\
-            .property = "model",\
-            .value    = stringify(2),\
-        },{\
-            .driver   = "Conroe-" TYPE_X86_CPU,\
-            .property = "level",\
-            .value    = stringify(2),\
-        },{\
-            .driver   = "Penryn-" TYPE_X86_CPU,\
-            .property = "model",\
-            .value    = stringify(2),\
-        },{\
-            .driver   = "Penryn-" TYPE_X86_CPU,\
-            .property = "level",\
-            .value    = stringify(2),\
-        },{\
-            .driver   = "Nehalem-" TYPE_X86_CPU,\
-            .property = "model",\
-            .value    = stringify(2),\
-        },{\
-            .driver   = "Nehalem-" TYPE_X86_CPU,\
-            .property = "level",\
-            .value    = stringify(2),\
-        },{\
-            .driver   = "virtio-net-pci",\
-            .property = "any_layout",\
-            .value    = "off",\
-        },{\
-            .driver = TYPE_X86_CPU,\
-            .property = "pmu",\
-            .value = "on",\
-        },{\
             .driver   = "i440FX-pcihost",\
             .property = "short_root_bus",\
             .value    = stringify(0),\
@@ -414,68 +335,7 @@ bool e820_get_entry(int, uint32_t, uint64_t *, uint64_t *);
         }
 
 #define PC_COMPAT_1_4 \
-        {\
-            .driver   = "scsi-hd",\
-            .property = "discard_granularity",\
-            .value    = stringify(0),\
-	},{\
-            .driver   = "scsi-cd",\
-            .property = "discard_granularity",\
-            .value    = stringify(0),\
-	},{\
-            .driver   = "scsi-disk",\
-            .property = "discard_granularity",\
-            .value    = stringify(0),\
-	},{\
-            .driver   = "ide-hd",\
-            .property = "discard_granularity",\
-            .value    = stringify(0),\
-	},{\
-            .driver   = "ide-cd",\
-            .property = "discard_granularity",\
-            .value    = stringify(0),\
-	},{\
-            .driver   = "ide-drive",\
-            .property = "discard_granularity",\
-            .value    = stringify(0),\
-        },{\
-            .driver   = "virtio-blk-pci",\
-            .property = "discard_granularity",\
-            .value    = stringify(0),\
-	},{\
-            .driver   = "virtio-serial-pci",\
-            .property = "vectors",\
-            /* DEV_NVECTORS_UNSPECIFIED as a uint32_t string */\
-            .value    = stringify(0xFFFFFFFF),\
-        },{ \
-            .driver   = "virtio-net-pci", \
-            .property = "ctrl_guest_offloads", \
-            .value    = "off", \
-        },{\
-            .driver   = "e1000",\
-            .property = "romfile",\
-            .value    = "pxe-e1000.rom",\
-        },{\
-            .driver   = "ne2k_pci",\
-            .property = "romfile",\
-            .value    = "pxe-ne2k_pci.rom",\
-        },{\
-            .driver   = "pcnet",\
-            .property = "romfile",\
-            .value    = "pxe-pcnet.rom",\
-        },{\
-            .driver   = "rtl8139",\
-            .property = "romfile",\
-            .value    = "pxe-rtl8139.rom",\
-        },{\
-            .driver   = "virtio-net-pci",\
-            .property = "romfile",\
-            .value    = "pxe-virtio.rom",\
-        },{\
-            .driver   = "486-" TYPE_X86_CPU,\
-            .property = "model",\
-            .value    = stringify(0),\
-        }
+    QEMU_COMPAT_1_4
 
 #define PC_COMMON_MACHINE_OPTIONS \
     .default_boot_order = "cad"
