diff --git a/ports/atmel-samd/boards/metro_m4_airlift_lite/mpconfigboard.mk b/ports/atmel-samd/boards/metro_m4_airlift_lite/mpconfigboard.mk
index 9022817f3e33..69cd5b0e2863 100644
--- a/ports/atmel-samd/boards/metro_m4_airlift_lite/mpconfigboard.mk
+++ b/ports/atmel-samd/boards/metro_m4_airlift_lite/mpconfigboard.mk
@@ -10,7 +10,7 @@ QSPI_FLASH_FILESYSTEM = 1
 EXTERNAL_FLASH_DEVICES = "S25FL116K, S25FL216K, GD25Q16C, W25Q16JVxQ"
 LONGINT_IMPL = MPZ
 
-CIRCUITPY__EVE = 1
+CIRCUITPY__EVE = 0
 CIRCUITPY_FLOPPYIO = 0
 CIRCUITPY_JPEGIO = 0
 CIRCUITPY_SYNTHIO = 0
diff --git a/shared-bindings/_eve/__init__.c b/shared-bindings/_eve/__init__.c
index fde8ebb50eee..99dbe7da9aa2 100644
--- a/shared-bindings/_eve/__init__.c
+++ b/shared-bindings/_eve/__init__.c
@@ -46,6 +46,14 @@ static mp_obj_t _register(mp_obj_t self, mp_obj_t o) {
 }
 static MP_DEFINE_CONST_FUN_OBJ_2(register_obj, _register);
 
+//|     def setmodel(self, m: int) -> None: ...
+static mp_obj_t _setmodel(mp_obj_t self, mp_obj_t m) {
+    common_hal__eve_t *eve = EVEHAL(self);
+    eve->model = mp_obj_get_int_truncated(m);
+    return mp_const_none;
+}
+static MP_DEFINE_CONST_FUN_OBJ_2(setmodel_obj, _setmodel);
+
 //|     def flush(self) -> None:
 //|         """Send any queued drawing commands directly to the hardware.
 //|
@@ -236,113 +244,153 @@ static mp_obj_t _bitmapswizzle(size_t n_args, const mp_obj_t *args) {
 }
 static MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(bitmapswizzle_obj, 5, 5, _bitmapswizzle);
 
-//|     def BitmapTransformA(self, p: int, v: int) -> None:
+//|     def BitmapTransformA(self, v: float) -> None:
 //|         """Set the :math:`a` component of the bitmap transform matrix
 //|
-//|         :param int p: precision control: 0 is 8.8, 1 is 1.15. Range 0-1. The initial value is 0
-//|         :param int v: The :math:`a` component of the bitmap transform matrix, in signed 8.8 or 1.15 bit fixed-point form. Range 0-131071. The initial value is 256
+//|         :param float v: The :math:`a` component of the bitmap transform matrix
 //|
-//|         The initial value is **p** = 0, **v** = 256. This represents the value 1.0.
+//|         The initial value 1.0.
 //|
 //|         These values are part of the graphics context and are saved and restored by :meth:`SaveContext` and :meth:`RestoreContext`.
 //|         """
 //|         ...
 
-static mp_obj_t _bitmaptransforma(mp_obj_t self, mp_obj_t a0, mp_obj_t a1) {
-    uint32_t p = mp_obj_get_int_truncated(a0);
-    uint32_t v = mp_obj_get_int_truncated(a1);
-    common_hal__eve_BitmapTransformA(EVEHAL(self), p, v);
+static void _transform1(uint32_t *p, uint32_t *v, size_t n_args, const mp_obj_t *args) {
+    common_hal__eve_t *eve = EVEHAL(args[0]);
+    mp_float_t a;
+
+    if (eve->model == 0) {
+        // Backwards-compatible case for legacy code
+        if (n_args != 3) {
+            mp_raise_TypeError_varg(MP_ERROR_TEXT("function takes %d positional arguments but %d were given"), 2, n_args - 1);
+        }
+        *p = mp_obj_get_int_truncated(args[1]);
+        *v = mp_obj_get_int_truncated(args[2]);
+    } else {
+        if (n_args != 2) {
+            mp_raise_TypeError_varg(MP_ERROR_TEXT("function takes %d positional arguments but %d were given"), 1, n_args - 1);
+        }
+        a = mp_obj_get_float(args[1]);
+        if ((eve->model > 810) && (-2.0 <= a) && (a < 2.0)) {
+            *p = 1;
+            *v = (int)(32768.0 * a);
+        } else {
+            *p = 0;
+            *v = (int)(256.0 * a);
+        }
+    }
+}
+
+static mp_obj_t _bitmaptransforma(size_t n_args, const mp_obj_t *args) {
+    uint32_t p, v;
+    _transform1(&p, &v, n_args, args);
+    common_hal__eve_BitmapTransformA(EVEHAL(args[0]), p, v);
     return mp_const_none;
 }
-static MP_DEFINE_CONST_FUN_OBJ_3(bitmaptransforma_obj, _bitmaptransforma);
+static MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(bitmaptransforma_obj, 2, 3, _bitmaptransforma);
 
-//|     def BitmapTransformB(self, p: int, v: int) -> None:
+//|     def BitmapTransformB(self, v: float) -> None:
 //|         """Set the :math:`b` component of the bitmap transform matrix
 //|
-//|         :param int p: precision control: 0 is 8.8, 1 is 1.15. Range 0-1. The initial value is 0
-//|         :param int v: The :math:`b` component of the bitmap transform matrix, in signed 8.8 or 1.15 bit fixed-point form. Range 0-131071. The initial value is 0
+//|         :param float v: The :math:`b` component of the bitmap transform matrix
 //|
-//|         The initial value is **p** = 0, **v** = 0. This represents the value 0.0.
+//|         The initial value 0.0.
 //|
 //|         These values are part of the graphics context and are saved and restored by :meth:`SaveContext` and :meth:`RestoreContext`.
 //|         """
 //|         ...
 
-static mp_obj_t _bitmaptransformb(mp_obj_t self, mp_obj_t a0, mp_obj_t a1) {
-    uint32_t p = mp_obj_get_int_truncated(a0);
-    uint32_t v = mp_obj_get_int_truncated(a1);
-    common_hal__eve_BitmapTransformB(EVEHAL(self), p, v);
+static mp_obj_t _bitmaptransformb(size_t n_args, const mp_obj_t *args) {
+    uint32_t p, v;
+    _transform1(&p, &v, n_args, args);
+    common_hal__eve_BitmapTransformB(EVEHAL(args[0]), p, v);
     return mp_const_none;
 }
-static MP_DEFINE_CONST_FUN_OBJ_3(bitmaptransformb_obj, _bitmaptransformb);
+static MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(bitmaptransformb_obj, 2, 3, _bitmaptransformb);
 
-//|     def BitmapTransformC(self, v: int) -> None:
+//|     def BitmapTransformC(self, v: float) -> None:
 //|         """Set the :math:`c` component of the bitmap transform matrix
 //|
-//|         :param int v: The :math:`c` component of the bitmap transform matrix, in signed 15.8 bit fixed-point form. Range 0-16777215. The initial value is 0
+//|         :param int v: The :math:`c` component of the bitmap transform matrix
+//|
+//|         The initial value 0.0.
 //|
 //|         This value is part of the graphics context and is saved and restored by :meth:`SaveContext` and :meth:`RestoreContext`.
 //|         """
 //|         ...
 
 static mp_obj_t _bitmaptransformc(mp_obj_t self, mp_obj_t a0) {
-    uint32_t v = mp_obj_get_int_truncated(a0);
+    common_hal__eve_t *eve = EVEHAL(self);
+    int v;
+
+    if (eve->model == 0) {
+        v = mp_obj_get_int_truncated(a0);
+    } else {
+        v = (int)(256.0 * mp_obj_get_float(a0));
+    }
     common_hal__eve_BitmapTransformC(EVEHAL(self), v);
     return mp_const_none;
 }
 static MP_DEFINE_CONST_FUN_OBJ_2(bitmaptransformc_obj, _bitmaptransformc);
 
-//|     def BitmapTransformD(self, p: int, v: int) -> None:
+//|     def BitmapTransformD(self, v: float) -> None:
 //|         """Set the :math:`d` component of the bitmap transform matrix
 //|
-//|         :param int p: precision control: 0 is 8.8, 1 is 1.15. Range 0-1. The initial value is 0
-//|         :param int v: The :math:`d` component of the bitmap transform matrix, in signed 8.8 or 1.15 bit fixed-point form. Range 0-131071. The initial value is 0
+//|         :param float v: The :math:`d` component of the bitmap transform matrix
 //|
-//|         The initial value is **p** = 0, **v** = 0. This represents the value 0.0.
+//|         The initial value 0.0.
 //|
 //|         These values are part of the graphics context and are saved and restored by :meth:`SaveContext` and :meth:`RestoreContext`.
 //|         """
 //|         ...
 
-static mp_obj_t _bitmaptransformd(mp_obj_t self, mp_obj_t a0, mp_obj_t a1) {
-    uint32_t p = mp_obj_get_int_truncated(a0);
-    uint32_t v = mp_obj_get_int_truncated(a1);
-    common_hal__eve_BitmapTransformD(EVEHAL(self), p, v);
+static mp_obj_t _bitmaptransformd(size_t n_args, const mp_obj_t *args) {
+    uint32_t p, v;
+    _transform1(&p, &v, n_args, args);
+    common_hal__eve_BitmapTransformD(EVEHAL(args[0]), p, v);
     return mp_const_none;
 }
-static MP_DEFINE_CONST_FUN_OBJ_3(bitmaptransformd_obj, _bitmaptransformd);
+static MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(bitmaptransformd_obj, 2, 3, _bitmaptransformd);
 
-//|     def BitmapTransformE(self, p: int, v: int) -> None:
+//|     def BitmapTransformE(self, v: float) -> None:
 //|         """Set the :math:`e` component of the bitmap transform matrix
 //|
-//|         :param int p: precision control: 0 is 8.8, 1 is 1.15. Range 0-1. The initial value is 0
-//|         :param int v: The :math:`e` component of the bitmap transform matrix, in signed 8.8 or 1.15 bit fixed-point form. Range 0-131071. The initial value is 256
+//|         :param float v: The :math:`e` component of the bitmap transform matrix
 //|
-//|         The initial value is **p** = 0, **v** = 256. This represents the value 1.0.
+//|         The initial value 1.0.
 //|
 //|         These values are part of the graphics context and are saved and restored by :meth:`SaveContext` and :meth:`RestoreContext`.
 //|         """
 //|         ...
 
-static mp_obj_t _bitmaptransforme(mp_obj_t self, mp_obj_t a0, mp_obj_t a1) {
-    uint32_t p = mp_obj_get_int_truncated(a0);
-    uint32_t v = mp_obj_get_int_truncated(a1);
-    common_hal__eve_BitmapTransformE(EVEHAL(self), p, v);
+static mp_obj_t _bitmaptransforme(size_t n_args, const mp_obj_t *args) {
+    uint32_t p, v;
+    _transform1(&p, &v, n_args, args);
+    common_hal__eve_BitmapTransformE(EVEHAL(args[0]), p, v);
     return mp_const_none;
 }
-static MP_DEFINE_CONST_FUN_OBJ_3(bitmaptransforme_obj, _bitmaptransforme);
+static MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(bitmaptransforme_obj, 2, 3, _bitmaptransforme);
 
 //|     def BitmapTransformF(self, v: int) -> None:
 //|         """Set the :math:`f` component of the bitmap transform matrix
 //|
-//|         :param int v: The :math:`f` component of the bitmap transform matrix, in signed 15.8 bit fixed-point form. Range 0-16777215. The initial value is 0
+//|         :param int v: The :math:`f` component of the bitmap transform matrix
+//|
+//|         The initial value 0.0.
 //|
 //|         This value is part of the graphics context and is saved and restored by :meth:`SaveContext` and :meth:`RestoreContext`.
 //|         """
 //|         ...
 
 static mp_obj_t _bitmaptransformf(mp_obj_t self, mp_obj_t a0) {
-    uint32_t v = mp_obj_get_int_truncated(a0);
+    common_hal__eve_t *eve = EVEHAL(self);
+    int v;
+
+    if (eve->model == 0) {
+        v = mp_obj_get_int_truncated(a0);
+    } else {
+        v = (int)(256.0 * mp_obj_get_float(a0));
+    }
     common_hal__eve_BitmapTransformF(EVEHAL(self), v);
     return mp_const_none;
 }
@@ -1057,6 +1105,7 @@ static MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(cmd_obj, 4, 4, _cmd);
 
 static const mp_rom_map_elem_t _EVE_locals_dict_table[] = {
     { MP_ROM_QSTR(MP_QSTR_register), MP_ROM_PTR(&register_obj) },
+    { MP_ROM_QSTR(MP_QSTR_setmodel), MP_ROM_PTR(&setmodel_obj) },
     { MP_ROM_QSTR(MP_QSTR_cc), MP_ROM_PTR(&cc_obj) },
     { MP_ROM_QSTR(MP_QSTR_flush), MP_ROM_PTR(&flush_obj) },
     { MP_ROM_QSTR(MP_QSTR_Vertex2f), MP_ROM_PTR(&vertex2f_obj) },
@@ -1071,6 +1120,7 @@ static mp_obj_t _EVE_make_new(const mp_obj_type_t *type, size_t n_args, size_t n
     mp_obj__EVE_t *o = mp_obj_malloc(mp_obj__EVE_t, &_EVE_type);
     o->_eve.n = 0;
     o->_eve.vscale = 16;
+    o->_eve.model = 0;  // default is legacy behavior
     return MP_OBJ_FROM_PTR(o);
 }
 
diff --git a/shared-module/_eve/__init__.h b/shared-module/_eve/__init__.h
index 227fe8fc935e..b25d9bf66203 100644
--- a/shared-module/_eve/__init__.h
+++ b/shared-module/_eve/__init__.h
@@ -8,6 +8,7 @@
 
 typedef struct _common_hal__eve_t {
     mp_obj_t dest[3];           // Own 'write' method, plus argument
+    int model;                  // 0 for unknown, or 810, 815, 817 for the three EVE generations
     int vscale;                 // fixed-point scaling used for Vertex2f
     size_t n;                   // Current size of command buffer
     uint8_t buf[512];           // Command buffer