X16: Updated to the newest hardware design

docs/lang/preprocessor.md

@@ -124,7 +124,7 @@ These features are used to identify the target machine in multiplatform programs
 `COMMANDER_X16`, `CPM`, `GAMEBOY`, `IBM_PC`, `MSX`, `NEC_PC_88`, `NES`, `ZX_SPECTRUM`
 – 1 if the target is the machine in question, 0 otherwise
 
-* `VERA_VERSION` – on Commander X16, the version of the VERA chip: `7` for 0.7, `8` for 0.8
+* `VERA_VERSION` – on Commander X16, the version of the VERA chip: `7` for 0.7, `8` for 0.8, `9` for 0.9
 
 
 ### Built-in preprocessor functions and operators

docs/stdlib/x16.md

@@ -4,6 +4,7 @@
 
 **WARNING!** Commander X16 is not yet a finalised design.
 Therefore, both the device itself and the modules for its support may change at any moment.  
+The X16-oriented modules may be out of date and not support the current design of the device.
 
 ## x16_kernal
 
@@ -11,6 +12,11 @@ The `x16_kernal` module is imported automatically on the X16 target.
 
 Currently, it automatically imports the [`c64_kernal` module](./c64.md).
 
+#### `void mouse_config(byte register(a) enable, byte register(x) scale)`
+
+Configures the mouse pointer.  
+`enable` should be `1` to enable, `0` to disable and `$ff` to enable without reconfiguration.  
+`scale` should be `1` on 640×480 screens, `2` on 320×240 screens, and `0` to keep the current scale.
 
 ## x16_hardware
 
@@ -43,7 +49,7 @@ Copies `size` bytes from the RAM at address `source` into the VERA memory space
 
 #### `struct vera_layer_setup`
 
-Hardware register values for a video layer:
+Hardware register values for a video layer. For VERA 0.7 and 0.8:
 
     byte ctrl0
     byte ctrl1
@@ -52,13 +58,31 @@ Hardware register values for a video layer:
     word hscroll
     word vscroll
     
+For VERA 0.9:
+
+    byte config
+    byte map_base
+    byte tile_base
+    word hscroll
+    word vscroll
+
 #### `void set_vera_layer1(pointer.vera_layer_setup)`
 
-Sets up the layer 1.
+Sets up the layer 1. VERA 0.7 and 0.8 only.  
+On VERA 0.9, use `vera_layer0` directly.
 
 #### `void set_vera_layer2(pointer.vera_layer_setup)`
 
-Sets up the layer 2.
+Sets up the layer 2. VERA 0.7 and 0.8 only.  
+On VERA 0.9, use `vera_layer1` directly.
+
+#### `vera_layer_setup vera_layer0`
+
+Direct access to registers for the layer 0. VERA 0.9 only.
+
+#### `vera_layer_setup vera_layer1`
+
+Direct access to registers for the layer 1. VERA 0.9 only.
     
 #### `struct vera_sprite_data`
 
@@ -70,15 +94,33 @@ Hardware register values for a sprite:
     byte ctrl0
     byte ctrl1
     
-#### `const int24 VERA_COMPOSER_CTRL`
+#### `void vera_upload_sprite(byte sprite_id, pointer.vera_sprite_data source)`
+
+Uploads sprite data for given sprite id.
+    
 #### `const int24 VERA_PALETTE`
-#### `const int24 VERA_LAYER_1`
-#### `const int24 VERA_LAYER_2`
-#### `const int24 VERA_SPRITE_CTRL`
 #### `const int24 VERA_SPRITES`
 
 Various addresses in the VERA memory space.
 
+#### `const int24 VERA_COMPOSER_CTRL`
+#### `const int24 VERA_LAYER_1`
+#### `const int24 VERA_LAYER_2`
+#### `const int24 VERA_SPRITE_CTRL`
+
+Various addresses in the VERA memory space. VERA 0.7 and 0.8 only.
+
+#### `void vera_reset()`
+
+Resets the VERA.
+
+#### `void vera_set_sprites_enable(bool enabled)`
+
+Enables/disables sprites.
+
+#### `void set_border(byte color)`
+
+Changes the color of the border.
 
 ## x16_joy
 
@@ -120,9 +162,22 @@ Variable       | SNES controller | NES controller | Keyboard (joy 1 only)
  
 `input_b` is an alias for `input_btn`. Single-button games should use `input_btn` for compatibility.
 
+#### `x16_joy_type joy_type`
+
+The type of the last read joystick. One of `joy_none`, `joy_nes`, `joy_snes`, `joy_keyboard`.
+ 
 ## x16_joy1_default module
 
 Defines the joystick in port 1 as the default joystick.
 
 #### `alias read_joy = read_joy1`
 
+## x16_mouse
+
+The `x16_mouse` module implements a mouse driver compatible with the `mouse` module.
+
+Before using this, you may want to call `mouse_config` from the `x16_kernal` module.
+
+#### `void read_mouse()`
+
+Reads the state of the mouse.

examples/README.md

@@ -94,3 +94,5 @@ no more one of which will display correctly depending on the default font of you
 * [Palette](x16/palette.mfk) – displays the default 256-colour palette.
 
 * [Balls](x16/balls.mfk) – 16 sprites using 240 colours.
+
+* [Joy demo](x16/joydemo.mfk) – simple joystick demo.

examples/x16/balls.mfk

@@ -35,7 +35,7 @@ void main () {
     vera_upload_large($10000, sprite_bitmap.addr, sizeof(sprite_bitmap))
     vera_upload_large(VERA_SPRITES, sprites.addr, sizeof(sprites))
     // enable sprites:
-    vera_poke(VERA_SPRITE_CTRL, 1)
+    vera_set_sprites_enable(true)
     while true {
         for i,0,paralleluntil,SPRITE_COUNT {
             p = sprites[i].pointer

examples/x16/joydemo.mfk

@@ -0,0 +1,66 @@
+import x16_kernal
+import x16_hardware
+import x16_joy1_default
+
+vera_sprite_data sprite
+
+void main() {
+
+    sprite.address = $800
+    sprite.x = 100
+    sprite.y = 100
+    // no collision, above all layers, no flipping
+    sprite.ctrl0 = $c
+    // 32×32 pixels
+    sprite.ctrl1 = $a0
+
+    vera_upload_sprite(0, sprite.pointer)
+    vera_upload_large($10000, sprite_bitmap.addr, sizeof(sprite_bitmap))
+    vera_set_sprites_enable(true)
+    while true {
+        read_joy()
+        sprite.x += input_dx
+        sprite.y += input_dy
+        if input_start != 0 {
+            sprite.ctrl1 = (sprite.ctrl1 & $f0) | ($f & (sprite.ctrl1 + 1))
+        }
+        vera_upload_sprite(0, sprite.pointer)
+        //vera_upload_large(VERA_SPRITES, sprite.addr, sizeof(sprite))
+    }
+}
+
+
+array sprite_bitmap = [
+$00,$00,$00,$00,$00,$00,$11,$11,$11,$11,$00,$00,$00,$00,$00,$00,
+$00,$00,$00,$00,$01,$11,$11,$11,$11,$11,$11,$10,$00,$00,$00,$00,
+$00,$00,$00,$01,$11,$11,$11,$11,$11,$11,$11,$11,$10,$00,$00,$00,
+$00,$00,$00,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$00,$00,$00,
+$00,$00,$01,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$10,$00,$00,
+$00,$00,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$00,$00,
+$00,$01,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$10,$00,
+$00,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$00,
+$00,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$00,
+$01,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$10,
+$01,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$10,
+$01,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$10,
+$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,
+$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,
+$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,
+$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,
+$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,
+$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,
+$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,
+$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,
+$01,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$10,
+$01,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$10,
+$01,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$10,
+$00,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$00,
+$00,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$00,
+$00,$01,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$10,$00,
+$00,$00,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$00,$00,
+$00,$00,$01,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$10,$00,$00,
+$00,$00,$00,$11,$11,$11,$11,$11,$11,$11,$11,$11,$11,$00,$00,$00,
+$00,$00,$00,$01,$11,$11,$11,$11,$11,$11,$11,$11,$10,$00,$00,$00,
+$00,$00,$00,$00,$01,$11,$11,$11,$11,$11,$11,$10,$00,$00,$00,$00,
+$00,$00,$00,$00,$00,$00,$11,$11,$11,$11,$00,$00,$00,$00,$00,$00
+]

include/platform/x16_experimental.ini

@@ -35,11 +35,12 @@ segment_himem_ff_bank=$ff
 CBM=1
 COMMANDER_X16=1
 WIDESCREEN=1
+TALLSCREEN=1
 KEYBOARD=1
 JOYSTICKS=2
 HAS_BITMAP_MODE=1
-; Use VERA 0.8, as this is what the newest version of the emulator implements:
-VERA_VERSION=8
+; Use VERA 0.9, as this is what the newest version of the emulator implements:
+VERA_VERSION=9
 
 [output]
 style=single

include/x16/vera_7_or_8.mfk

@@ -0,0 +1,196 @@
+
+#if VERA_VERSION == 7
+
+const int24 VERA_COMPOSER_CTRL = $40040
+const int24 VERA_PALETTE = $40200
+const int24 VERA_LAYER_1 = $40000
+const int24 VERA_LAYER_2 = $40010
+const int24 VERA_SPRITE_CTRL = $40020
+const int24 VERA_SPRITES = $40800
+
+volatile byte vera_addr_hi @ $9f20
+volatile byte vera_addr_mi @ $9f21
+volatile byte vera_addr_lo @ $9f22
+
+#elseif VERA_VERSION == 8
+
+const int24 VERA_COMPOSER_CTRL = $F0000
+const int24 VERA_PALETTE = $F1000
+const int24 VERA_LAYER_1 = $F2000
+const int24 VERA_LAYER_2 = $F3000
+const int24 VERA_SPRITE_CTRL = $F4000
+const int24 VERA_SPRITES = $F5000
+
+volatile byte vera_addr_hi @ $9f22
+volatile byte vera_addr_mi @ $9f21
+volatile byte vera_addr_lo @ $9f20
+volatile int24 vera_addr @ $9f20
+
+#else
+#error Unsupported VERA_VERSION
+#endif
+
+volatile byte vera_data1 @ $9f23
+volatile byte vera_data2 @ $9f24
+volatile byte vera_ctrl @ $9f25
+volatile byte vera_ien @ $9f26
+volatile byte vera_isr @ $9f27
+
+
+
+
+struct vera_layer_setup {
+    byte ctrl0
+    byte ctrl1
+    word map_base
+    word tile_base
+    word hscroll
+    word vscroll
+}
+
+asm void set_vera_layer_internal(pointer.vera_layer_setup ax, byte y) {
+    sta __reg
+    stx __reg+1
+    stz vera_ctrl
+#if VERA_VERSION == 7
+    lda $14
+    sta vera_addr_hi
+    stz vera_addr_mi
+    sty vera_addr_lo
+#elseif VERA_VERSION == 8
+    lda $1F
+    sta vera_addr_hi
+    sty vera_addr_mi
+    stz vera_addr_lo
+#else
+#error Unsupported VERA_VERSION
+#endif
+    ldy #0
+    __set_layer_internal_loop:
+    lda (__reg),y
+    sta vera_data1
+    iny
+    cpy #sizeof(vera_layer_setup)
+    bne __set_layer_internal_loop
+    ? rts
+}
+
+asm void set_vera_layer1(pointer.vera_layer_setup ax) {
+#if VERA_VERSION == 7
+    ? ldy #0
+#elseif VERA_VERSION == 8
+    ? ldy #$20
+#else
+#error Unsupported VERA_VERSION
+#endif
+    ? jmp set_vera_layer_internal
+}
+
+asm void set_vera_layer2(pointer.vera_layer_setup ax) {
+#if VERA_VERSION == 7
+    ? ldy #$10
+#elseif VERA_VERSION == 8
+    ? ldy #$30
+#else
+#error Unsupported VERA_VERSION
+#endif
+    ? jmp set_vera_layer_internal
+}
+
+inline void vera_poke(int24 address, byte value) {
+    vera_addr_lo = address.b0
+    vera_addr_mi = address.b1
+    vera_addr_hi = address.b2
+    vera_ctrl = 0
+    vera_data1 = value
+}
+
+inline byte vera_peek(int24 address) {
+    vera_addr_lo = address.b0
+    vera_addr_mi = address.b1
+    vera_addr_hi = address.b2
+    vera_ctrl = 0
+    return vera_data1
+}
+
+inline void vera_fill(int24 address, byte value, word size) {
+    word i
+    vera_addr_lo = address.b0
+    vera_addr_mi = address.b1
+    vera_addr_hi = address.b2 | $10
+    vera_ctrl = 0
+    for i,0,paralleluntil,size {
+        vera_data1 = value
+    }
+}
+
+void vera_upload_large(int24 address, pointer source, word size) {
+    word i
+    vera_ctrl = 0
+    vera_addr_lo = address.b0
+    vera_addr_mi = address.b1
+    vera_addr_hi = address.b2 | $10
+    for i,0,paralleluntil,size {
+        vera_data1 = source[i]
+    }
+}
+
+inline void vera_upload(int24 address, pointer source, byte size) {
+    vera_ctrl = 0
+    vera_addr_lo = address.b0
+    vera_addr_mi = address.b1
+    vera_addr_hi = address.b2 | $10
+    asm {
+        ? ldy #0
+        __vera_upload_loop:
+        ? lda (source),y
+        ! sta vera_data1
+        ? iny
+        ? cpy size
+        ? bne __vera_upload_loop
+    }
+}
+
+inline void vera_reset() {
+    vera_ctrl = $80
+    vera_ctrl = 0
+}
+
+inline void vera_set_sprites_enable(bool enabled) {
+    vera_ctrl = 0
+    vera_ctrl = 0
+}
+
+struct vera_sprite_data {
+    word address
+    word x
+    word y
+    byte ctrl0
+    byte ctrl1
+}
+
+void vera_upload_sprite(byte sprite_id, pointer.vera_sprite_data source) {
+    vera_ctrl = 0
+    vera_addr_lo = sprite_id << 3
+    vera_addr_mi = (sprite_id >> 5) | VERA_SPRITES.b1
+    vera_addr_hi = VERA_SPRITES.b2 | $10
+    asm {
+        ? ldy #7
+        __vera_upload_sprite_loop:
+        ? lda (source),y
+        ! sta vera_data0
+        ? iny
+        ? cpy #sizeof(vera_sprite_data)
+        ? bne __vera_upload_sprite_loop
+    }
+}
+
+inline void vera_set_sprites_enable(bool enabled) {
+    vera_poke(VERA_SPRITE_CTRL, byte(enabled))
+}
+
+inline void vera_set_border(byte color) {
+    vera_poke(VERA_COMPOSER_CTRL + 3, color)
+}
+
+alias set_border = vera_set_border

include/x16/vera_9.mfk

@@ -0,0 +1,132 @@
+
+#if VERA_VERSION != 9
+#error Unsupported VERA_VERSION
+#endif
+
+
+const int24 VERA_PALETTE = $1FA00
+const int24 VERA_SPRITES = $1FC00
+
+volatile byte vera_addr_lo @ $9f20
+volatile byte vera_addr_mi @ $9f21
+volatile byte vera_addr_hi @ $9f22
+volatile int24 vera_addr @ $9f20
+volatile byte vera_data0 @ $9f23
+volatile byte vera_data1 @ $9f24
+volatile byte vera_ctrl @ $9f25
+volatile byte vera_ien @ $9f26
+volatile byte vera_isr @ $9f27
+volatile byte vera_irqline @ $9f28
+volatile byte vera_dc_video_hstart @ $9f29
+volatile byte vera_dc_hscale_hstop @ $9f29
+volatile byte vera_dc_vscale_vstart @ $9f2b
+volatile byte vera_dc_border_vstop @ $9f2c
+
+struct vera_layer_setup {
+    byte config
+    byte map_base
+    byte tile_base
+    word hscroll
+    word vscroll
+}
+
+volatile vera_layer_setup vera_layer0 @$9F2D
+volatile vera_layer_setup vera_layer1 @$9F34
+
+
+
+inline void vera_poke(int24 address, byte value) {
+    vera_ctrl = 0
+    vera_addr = address
+    vera_data0 = value
+}
+
+inline byte vera_peek(int24 address) {
+    vera_ctrl = 0
+    vera_addr = address
+    return vera_data0
+}
+
+inline void vera_fill(int24 address, byte value, word size) {
+    word i
+    vera_addr_lo = address.b0
+    vera_addr_mi = address.b1
+    vera_addr_hi = address.b2 | $10
+    vera_ctrl = 0
+    for i,0,paralleluntil,size {
+        vera_data0 = value
+    }
+}
+
+void vera_upload_large(int24 address, pointer source, word size) {
+    word i
+    vera_ctrl = 0
+    vera_addr_lo = address.b0
+    vera_addr_mi = address.b1
+    vera_addr_hi = address.b2 | $10
+    for i,0,paralleluntil,size {
+        vera_data0 = source[i]
+    }
+}
+
+inline void vera_upload(int24 address, pointer source, byte size) {
+    vera_ctrl = 0
+    vera_addr_lo = address.b0
+    vera_addr_mi = address.b1
+    vera_addr_hi = address.b2 | $10
+    asm {
+        ? ldy #0
+        __vera_upload_loop:
+        ? lda (source),y
+        ! sta vera_data0
+        ? iny
+        ? cpy size
+        ? bne __vera_upload_loop
+    }
+}
+
+inline void vera_reset() {
+    vera_ctrl = $80
+    vera_ctrl = 0
+}
+
+struct vera_sprite_data {
+    word address
+    word x
+    word y
+    byte ctrl0
+    byte ctrl1
+}
+
+void vera_upload_sprite(byte sprite_id, pointer.vera_sprite_data source) {
+    vera_ctrl = 0
+    vera_addr_lo = sprite_id << 3
+    vera_addr_mi = (sprite_id >> 5) | VERA_SPRITES.b1
+    vera_addr_hi = VERA_SPRITES.b2 | $10
+    asm {
+        ? ldy #0
+        __vera_upload_sprite_loop:
+        ? lda (source),y
+        ! sta vera_data0
+        ? iny
+        ? cpy #sizeof(vera_sprite_data)
+        ? bne __vera_upload_sprite_loop
+    }
+}
+
+inline void vera_set_sprites_enable(bool enabled) {
+    vera_ctrl = 0
+    if enabled {
+        vera_dc_video_hstart |= $40
+    } else {
+        vera_dc_video_hstart &= $ff ^ $40
+    }
+}
+
+inline void vera_set_border(byte color) {
+    vera_ctrl = 0
+    vera_dc_border_vstop = color
+}
+
+alias set_border = vera_set_border
+

include/x16_hardware.mfk

@@ -1,162 +1,12 @@
 
-#if VERA_VERSION == 7
-
-const int24 VERA_COMPOSER_CTRL = $40040
-const int24 VERA_PALETTE = $40200
-const int24 VERA_LAYER_1 = $40000
-const int24 VERA_LAYER_2 = $40010
-const int24 VERA_SPRITE_CTRL = $40020
-const int24 VERA_SPRITES = $40800
-
-volatile byte vera_addr_hi @ $9f20
-volatile byte vera_addr_mi @ $9f21
-volatile byte vera_addr_lo @ $9f22
-
-#elseif VERA_VERSION == 8
-
-const int24 VERA_COMPOSER_CTRL = $F0000
-const int24 VERA_PALETTE = $F1000
-const int24 VERA_LAYER_1 = $F2000
-const int24 VERA_LAYER_2 = $F3000
-const int24 VERA_SPRITE_CTRL = $F4000
-const int24 VERA_SPRITES = $F5000
-
-volatile byte vera_addr_hi @ $9f22
-volatile byte vera_addr_mi @ $9f21
-volatile byte vera_addr_lo @ $9f20
-volatile int24 vera_addr @ $9f20
-
+#if VERA_VERSION < 9
+import x16/vera_7_or_8
+#elseif VERA_VERSION == 9
+import x16/vera_9
 #else
 #error Unsupported VERA_VERSION
 #endif
 
-volatile byte vera_data1 @ $9f23
-volatile byte vera_data2 @ $9f24
-volatile byte vera_ctrl @ $9f25
-volatile byte vera_ien @ $9f26
-volatile byte vera_isr @ $9f27
-
-struct vera_layer_setup {
-    byte ctrl0
-    byte ctrl1
-    word map_base
-    word tile_base
-    word hscroll
-    word vscroll
-}
-
-asm void set_vera_layer_internal(pointer.vera_layer_setup ax, byte y) {
-    sta __reg
-    stx __reg+1
-    stz vera_ctrl
-#if VERA_VERSION == 7
-    lda $14
-    sta vera_addr_hi
-    stz vera_addr_mi
-    sty vera_addr_lo
-#elseif VERA_VERSION == 8
-    lda $1F
-    sta vera_addr_hi
-    sty vera_addr_mi
-    stz vera_addr_lo
-#else
-#error Unsupported VERA_VERSION
-#endif
-    ldy #0
-    __set_layer_internal_loop:
-    lda (__reg),y
-    sta vera_data1
-    iny
-    cpy #sizeof(vera_layer_setup)
-    bne __set_layer_internal_loop
-    ? rts
-}
-
-asm void set_vera_layer1(pointer.vera_layer_setup ax) {
-#if VERA_VERSION == 7
-    ? ldy #0
-#elseif VERA_VERSION == 8
-    ? ldy #$20
-#else
-#error Unsupported VERA_VERSION
-#endif
-    ? jmp set_vera_layer_internal
-}
-
-asm void set_vera_layer2(pointer.vera_layer_setup ax) {
-#if VERA_VERSION == 7
-    ? ldy #$10
-#elseif VERA_VERSION == 8
-    ? ldy #$30
-#else
-#error Unsupported VERA_VERSION
-#endif
-    ? jmp set_vera_layer_internal
-}
-
-inline void vera_poke(int24 address, byte value) {
-    vera_addr_lo = address.b0
-    vera_addr_mi = address.b1
-    vera_addr_hi = address.b2
-    vera_ctrl = 0
-    vera_data1 = value
-}
-
-inline byte vera_peek(int24 address) {
-    vera_addr_lo = address.b0
-    vera_addr_mi = address.b1
-    vera_addr_hi = address.b2
-    vera_ctrl = 0
-    return vera_data1
-}
-
-inline void vera_fill(int24 address, byte value, word size) {
-    word i
-    vera_addr_lo = address.b0
-    vera_addr_mi = address.b1
-    vera_addr_hi = address.b2 | $10
-    vera_ctrl = 0
-    for i,0,paralleluntil,size {
-        vera_data1 = value
-    }
-}
-
-void vera_upload_large(int24 address, pointer source, word size) {
-    word i
-    vera_ctrl = 0
-    vera_addr_lo = address.b0
-    vera_addr_mi = address.b1
-    vera_addr_hi = address.b2 | $10
-    for i,0,paralleluntil,size {
-        vera_data1 = source[i]
-    }
-}
-
-inline void vera_upload(int24 address, pointer source, byte size) {
-    byte i
-    vera_ctrl = 0
-    vera_addr_lo = address.b0
-    vera_addr_mi = address.b1
-    vera_addr_hi = address.b2 | $10
-    asm {
-        ? ldy #0
-        __vera_upload_loop:
-        ? lda (source),y
-        ! sta vera_data1
-        ? iny
-        ? cpy size
-        ? bne __vera_upload_loop
-    }
-}
-
-struct vera_sprite_data {
-    word address
-    word x
-    word y
-    byte ctrl0
-    byte ctrl1
-}
-
 inline asm void set_ram_bank(byte register(a) bank) {
     ! STA $9F61
     ? RTS

include/x16_joy.mfk

@@ -1,3 +1,4 @@
+import joy
 
 void x16_reset_joy() {
 	input_dx = 0
@@ -40,6 +41,15 @@ byte input_l
 // SNES:R
 byte input_r
 
+enum x16_joy_type {
+    joy_nes = 0
+    joy_keyboard = 1
+    joy_snes = 15
+    joy_none = 255
+}
+
+x16_joy_type joy_type
+
 void read_joy1() {
     x16_reset_joy()
     read_also_joy1()
@@ -48,26 +58,25 @@ void read_joy2() {
     x16_reset_joy()
     read_also_joy2()
 }
-asm void read_also_joy1() {
-    JSR $FF06
-    LDA $F1
-    BNE __read_also_joy1_skip
-    LDA $EF
-    JSR x16_joy_byte0
-    LDA $F0
-    JSR x16_joy_byte1
-__read_also_joy1_skip:
-    RTS
+
+inline void read_also_joy1() {
+    __read_joy(0)
 }
-asm void read_also_joy2() {
-    JSR $FF06
-    LDA $F4
-    BNE __read_also_joy2_skip
-    LDA $F2
+inline void read_also_joy2() {
+    __read_joy(1)
+}
+
+asm void __read_joy(byte register(a) joy_id) {
+    JSR $FF53 // TODO: should we?
+    JSR $FF56
+    STY joy_type
+    CPY #0
+    BMI __read_joy_skip
+    PHX
     JSR x16_joy_byte0
-    LDA $F3
+    PLA
     JSR x16_joy_byte1
-__read_also_joy2_skip:
+__read_joy_skip:
     RTS
 }
 
@@ -86,4 +95,5 @@ void x16_joy_byte1(byte value) {
 	if value & 32 == 0 { input_l += 1 }
 	if value & 64 == 0 { input_x += 1 }
 	if value & 128 == 0 { input_a += 1 }
+	joy_type = x16_joy_type(value & 15)
 }

include/x16_kernal.mfk

@@ -1,2 +1,32 @@
 // Let's be lazy:
 import c64_kernal
+
+array(word) kernal_registers [16] @ 2
+
+struct clock_date_time_t {
+    byte year
+    byte month
+    byte day
+    byte hour
+    byte minute
+    byte second
+    byte jiffies
+}
+
+clock_date_time_t clock_date_time @ 2
+
+asm void clock_set_date_time() @$FF4D extern
+
+asm void clock_get_date_time() @$FF50 extern
+
+asm void mouse_config(byte register(a) enable, byte register(x) scale) @$FF68 extern
+
+asm byte mouse_get(byte register(x) offset) @$FF6B extern
+
+asm void mouse_scan() @$FF71 extern
+
+asm byte joystick_get(byte register(a) joy_id) @$FF56 extern
+
+asm void joystick_scan() @$FF53 extern
+
+

include/x16_mouse.mfk

@@ -0,0 +1,15 @@
+import x16_kernal
+import mouse
+
+void read_mouse() {
+    byte btn
+    mouse_scan()
+    btn = mouse_get(0)
+    mouse_x = kernal_registers[0]
+    mouse_y = kernal_registers[1]
+    mouse_lbm = btn & 1 != 0
+    mouse_rbm = btn & 2 != 0
+#if USE_MOUSE_MBM
+    mouse_mbm = btn & 4 != 0
+#endif
+}