Updated the cx16 library to the Commander X16's ROM prerelease 37.
This commit is contained in:
Greg King
110
include/cx16.h
110
include/cx16.h
@@ -2,7 +2,8 @@
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/* */
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/* cx16.h */
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/* */
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/* CX16 system-specific definitions */
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/* CX16 system-specific definitions */
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/* For prerelease 37 */
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/* */
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/* */
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/* This software is provided "as-is", without any expressed or implied */
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@@ -140,14 +141,16 @@
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/* get_tv() return codes
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** set_tv() argument codes
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*/
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#define TV_NONE 0
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#define TV_VGA 1
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#define TV_NTSC_COLOR 2
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#define TV_RGB 3
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#define TV_NONE2 4
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#define TV_VGA2 5
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#define TV_NTSC_MONO 6
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#define TV_RGB2 7
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enum {
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TV_NONE = 0x00,
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TV_VGA,
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TV_NTSC_COLOR,
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TV_RGB,
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TV_NONE2,
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TV_VGA2,
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TV_NTSC_MONO,
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TV_RGB2
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};
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/* Video modes for videomode() */
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#define VIDEOMODE_40x30 0x00
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@@ -157,11 +160,47 @@
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#define VIDEOMODE_320x200 0x80
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#define VIDEOMODE_SWAP (-1)
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/* VERA's address increment/decrement numbers */
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enum {
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VERA_DEC_0 = ((0 << 1) | 1) << 3,
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VERA_DEC_1 = ((1 << 1) | 1) << 3,
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VERA_DEC_2 = ((2 << 1) | 1) << 3,
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VERA_DEC_4 = ((3 << 1) | 1) << 3,
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VERA_DEC_8 = ((4 << 1) | 1) << 3,
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VERA_DEC_16 = ((5 << 1) | 1) << 3,
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VERA_DEC_32 = ((6 << 1) | 1) << 3,
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VERA_DEC_64 = ((7 << 1) | 1) << 3,
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VERA_DEC_128 = ((8 << 1) | 1) << 3,
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VERA_DEC_256 = ((9 << 1) | 1) << 3,
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VERA_DEC_512 = ((10 << 1) | 1) << 3,
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VERA_DEC_40 = ((11 << 1) | 1) << 3,
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VERA_DEC_80 = ((12 << 1) | 1) << 3,
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VERA_DEC_160 = ((13 << 1) | 1) << 3,
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VERA_DEC_320 = ((14 << 1) | 1) << 3,
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VERA_DEC_640 = ((15 << 1) | 1) << 3,
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VERA_INC_0 = ((0 << 1) | 0) << 3,
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VERA_INC_1 = ((1 << 1) | 0) << 3,
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VERA_INC_2 = ((2 << 1) | 0) << 3,
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VERA_INC_4 = ((3 << 1) | 0) << 3,
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VERA_INC_8 = ((4 << 1) | 0) << 3,
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VERA_INC_16 = ((5 << 1) | 0) << 3,
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VERA_INC_32 = ((6 << 1) | 0) << 3,
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VERA_INC_64 = ((7 << 1) | 0) << 3,
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VERA_INC_128 = ((8 << 1) | 0) << 3,
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VERA_INC_256 = ((9 << 1) | 0) << 3,
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VERA_INC_512 = ((10 << 1) | 0) << 3,
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VERA_INC_40 = ((11 << 1) | 0) << 3,
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VERA_INC_80 = ((12 << 1) | 0) << 3,
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VERA_INC_160 = ((13 << 1) | 0) << 3,
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VERA_INC_320 = ((14 << 1) | 0) << 3,
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VERA_INC_640 = ((15 << 1) | 0) << 3
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};
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/* VERA's interrupt flags */
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#define VERA_IRQ_VSYNC 0b00000001
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#define VERA_IRQ_RASTER 0b00000010
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#define VERA_IRQ_SPR_COLL 0b00000100
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#define VERA_IRQ_UART 0b00001000
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#define VERA_IRQ_AUDIO_LOW 0b00001000
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/* Define hardware. */
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@@ -175,6 +214,44 @@ struct __vera {
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unsigned char control; /* Control register */
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unsigned char irq_enable; /* Interrupt enable bits */
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unsigned char irq_flags; /* Interrupt flags */
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unsigned char irq_raster; /* Line where IRQ will occur */
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union {
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struct { /* Visible when DCSEL flag = 0 */
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unsigned char video; /* Flags to enable video layers */
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unsigned char hscale; /* Horizontal scale factor */
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unsigned char vscale; /* Vertical scale factor */
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unsigned char border; /* Border color (NTSC mode) */
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};
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struct { /* Visible when DCSEL flag = 1 */
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unsigned char hstart; /* Horizontal start position */
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unsigned char hstop; /* Horizontal stop position */
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unsigned char vstart; /* Vertical start position */
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unsigned char vstop; /* Vertical stop position */
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};
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} display;
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struct {
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unsigned char config; /* Layer map geometry */
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unsigned char mapbase; /* Map data address */
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unsigned char tilebase; /* Tile address and geometry */
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unsigned int hscroll; /* Smooth scroll horizontal offset */
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unsigned int vscroll; /* Smooth scroll vertical offset */
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} layer0;
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struct {
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unsigned char config;
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unsigned char mapbase;
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unsigned char tilebase;
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unsigned int hscroll;
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unsigned int vscroll;
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} layer1;
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struct {
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unsigned char control; /* PCM format */
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unsigned char rate; /* Sample rate */
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unsigned char data; /* PCM output queue */
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} audio; /* Pulse-Code Modulation registers */
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struct {
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unsigned char data;
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unsigned char control;
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} spi; /* SD card interface */
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};
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#define VERA (*(volatile struct __vera *)0x9F20)
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@@ -214,7 +291,7 @@ extern void cx16_std_mou[]; /* Referred to by mouse_static_stddrv[]
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unsigned char get_numbanks (void);
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unsigned short get_numbanks (void);
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/* Return the number of RAM banks that the machine has. */
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signed char get_ostype (void);
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@@ -234,6 +311,17 @@ void __fastcall__ set_tv (unsigned char type);
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** Call with a TV_xx constant.
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*/
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unsigned char __fastcall__ vera_layer_enable (unsigned char layers);
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/* Display the layers that are "named" by the bit flags in layers.
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** A value of 0b01 shows layer 0, a value of 0b10 shows layer 1,
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** a value of 0b11 shows both layers. Return the previous value.
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*/
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unsigned char __fastcall__ vera_sprites_enable (unsigned char mode);
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/* Enable the sprite engine when mode is non-zero (true);
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** disable sprites when mode is zero. Return the previous mode.
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*/
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signed char __fastcall__ videomode (signed char mode);
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/* Set the video mode, return the old mode.
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** Return -1 if Mode isn't valid.
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