mirror of
https://github.com/sehugg/8bitworkshop.git
synced 2024-11-23 06:32:11 +00:00
232 lines
6.7 KiB
C
232 lines
6.7 KiB
C
#ifndef _MSXBIOS_H
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#define _MSXBIOS_H
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#include <stdint.h>
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#define MSXUSR(pc) __asm__("call "#pc);
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/// VARIABLES
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const uint8_t* __at(0x0004) MSX_charset;
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const uint8_t __at(0x0006) MSX_vdp_port_read;
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const uint8_t __at(0x0007) MSX_vdp_port_write;
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const uint8_t __at(0x002d) MSX_version;
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// F3AE: # of positions on a line in SCREEN 0 (ini:39)
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uint8_t __at(0xf3ae) LINL40;
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// F3AF: # of positions on a line in SCREEN 1 (ini:29)
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uint8_t __at(0xf3af) LINL32;
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// F3B0: # of actually used positions in the current screenmodus (ini:39)
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uint8_t __at(0xf3b0) LINLEN;
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// F3B1: # of used lines on screen (ini:24)
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uint8_t __at(0xf3b1) CRTCNT;
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// F3B2: # of positions within a tabulator-column (ini:14)
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uint8_t __at(0xf3b1) CLMLST;
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typedef struct {
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uint16_t name;
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uint16_t color;
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uint16_t pattern;
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uint16_t sprite_attribute;
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uint16_t sprite_pattern;
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} MSXVDPModeData;
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MSXVDPModeData __at(0xf3b3) MSX_modedata_screen0;
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MSXVDPModeData __at(0xf3bd) MSX_modedata_screen1;
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MSXVDPModeData __at(0xf3c7) MSX_modedata_screen2;
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MSXVDPModeData __at(0xf3d1) MSX_modedata_screen3;
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// F3DC: line where the cursor is located
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uint8_t __at(0xf3dc) CSRY;
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// F3DD: column where the cursor is located
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uint8_t __at(0xf3dd) CSRX;
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// F3DE: function key definition shown: 0: no, -1: yes
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uint8_t __at(0xf3de) CNSDFG;
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// F3DF-D3E6: storage for the last written value towards VDP registers 0 till 7
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uint8_t __at(0xf3df) MSX_vdp_regs[8];
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// F3E7: last read value of VDP register 8
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uint8_t __at(0xf3e7) STATFL;
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// F3E8: information about the joystick and space bar
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// 7 6 5 4 3 2 1 0
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// | | | | +-- Space bar, trig(0) (0 = pressed)
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// | | | +---------- Stick 1, Trigger 1 (0 = pressed)
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// | | +------------ Stick 1, Trigger 2 (0 = pressed)
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// | +-------------- Stick 2, Trigger 1 (0 = pressed)
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// +---------------- Stick 2, Trigger 2 (0 = pressed)
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uint8_t __at(0xf3e8) TRGFLG;
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// F3E9: code for the standard foreground color (ini:15)
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uint8_t __at(0xf3e9) FORCLR;
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// F3EA: code for the standard background color (ini:4)
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uint8_t __at(0xf3ea) BAKCLR;
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// F3EB: code for the standard border color (ini:7)
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uint8_t __at(0xf3eb) BDRCLR;
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//Pixel lcocation
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uint16_t __at(0xf92a) CLOC;
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//Pixel mask
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uint8_t __at(0xf92c) CMASK;
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//Attribute byte for SETC
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uint8_t __at(0xf3f2) ATRBYT;
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//Key scan timing
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uint8_t __at(0xf3f6) SCNCNT;
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//Key repeat timer
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uint8_t __at(0xf3f7) REPCNT;
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//Address in the keyboard buffer where a character will be written
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uint8_t* __at(0xf3f8) PUTPNT;
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//Address in the keyboard buffer where the next character is read
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uint8_t* __at(0xf3fa) GETPNT;
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/// FUNCTIONS
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// Reads the value of an address in another slot
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void RDSLT(uint8_t slot, uint16_t addr);
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// Writes a value to an address in another slot.
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void WRSLT(uint8_t slot, uint16_t addr, uint8_t value);
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// inhibits the screen display
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void DISSCR() __z88dk_fastcall;
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// displays the screen
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void ENASCR() __z88dk_fastcall;
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// write data in the VDP-register
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void WRTVDP(uint16_t reg_data) __z88dk_fastcall;
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// Reads the content of VRAM
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uint8_t RDVRM(uint16_t addr) __z88dk_fastcall;
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// Writes data in VRAM
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void WRTVRM(uint16_t addr, uint8_t data);
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// Enable VDP to read
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void SETRD();
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// Enable VDP to write
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void SETWRT();
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// fill VRAM with value
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void FILVRM(uint16_t start, uint16_t len, uint8_t data);
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// Block transfer to memory from VRAM
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void LDIRMV(uint8_t* mdest, uint16_t vsrc, uint16_t count);
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// Block transfer to VRAM from memory
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void LDIRVM(uint16_t vdest, const uint8_t* msrc, uint16_t count);
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// Switches to given screenmode
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void CHGMOD(uint8_t mode) __z88dk_fastcall;
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// Changes the screencolors
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void CHGCLR() __z88dk_fastcall;
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// Initialises all sprites
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void CLRSPR() __z88dk_fastcall;
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// Switches to SCREEN 0 (40x24 text mode)
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void INITXT() __z88dk_fastcall;
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// Switches to SCREEN 1 (text screen with 32*24 characters)
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void INIT32() __z88dk_fastcall;
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// Switches to SCREEN 2 (high resolution screen with 256*192 pixels)
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void INIGRP() __z88dk_fastcall;
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// Switches to SCREEN 3 (multi-color screen 64*48 pixels)
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void INIMLT() __z88dk_fastcall;
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// Returns the address of the sprite pattern table
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uint16_t CALPAT() __z88dk_fastcall;
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// Returns the address of the sprite attribute table
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uint16_t CALATR() __z88dk_fastcall;
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// Returns current sprite size
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uint16_t GSPSIZ() __z88dk_fastcall;
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// Displays a character on the graphic screen
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uint16_t GRPPRT(char ch) __z88dk_fastcall;
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// Initialises PSG and sets initial value for the PLAY statement
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uint16_t GICINI() __z88dk_fastcall;
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// Writes data to PSG-register
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uint16_t WRTPSG(uint16_t reg_data) __z88dk_fastcall;
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// Tests the status of the keyboard buffer
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uint8_t CHSNS() __z88dk_fastcall;
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// One character input (waiting)
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char CHGET() __z88dk_fastcall;
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// Displays one character
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void CHPUT(char ch) __z88dk_fastcall;
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// Sends one character to printer
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void LPTOUT(char ch) __z88dk_fastcall;
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// Beeps
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void BEEP() __z88dk_fastcall;
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// Clears the screen
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void CLS() __z88dk_fastcall;
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// Sets cursor X/Y position
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void POSIT(uint16_t yx) __z88dk_fastcall;
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// Forces the screen to be in the text mode
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void TOTEXT() __z88dk_fastcall;
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// Returns the joystick status
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uint8_t GTSTCK(uint8_t index) __z88dk_fastcall;
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// Returns current trigger status
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uint8_t GTTRIG(uint8_t index) __z88dk_fastcall;
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// Returns current touch pad status
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uint8_t GTPAD(uint8_t index) __z88dk_fastcall;
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// Returns currenct value of paddle
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uint8_t GTPDL(uint8_t index) __z88dk_fastcall;
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/*
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void RIGHTC() __z88dk_fastcall;
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void LEFTC() __z88dk_fastcall;
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void UPC() __z88dk_fastcall;
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uint8_t TUPC() __z88dk_fastcall;
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void DOWNC() __z88dk_fastcall;
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uint8_t TDOWNC() __z88dk_fastcall;
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void SCALXY() __z88dk_fastcall;
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*/
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void MAPXY() __z88dk_fastcall;
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uint16_t FETCHC_ADDR() __z88dk_fastcall;
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/*
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void STOREC(uint16_t addr, uint8_t mask);
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void SETATR(uint8_t attr) __z88dk_fastcall;
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uint8_t READC() __z88dk_fastcall;
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void SETC() __z88dk_fastcall;
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void NSETCX(uint16_t fillcount) __z88dk_fastcall;
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*/
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uint8_t RDVDP() __z88dk_fastcall;
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uint8_t SNSMAT(uint8_t row) __z88dk_fastcall;
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void KILBUF() __z88dk_fastcall;
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// VDP colors for TMS9918A
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enum MSX1_Color {
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COLOR_TRANSPARENT = 0x0,
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COLOR_BLACK = 0x1,
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COLOR_GREEN = 0x2,
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COLOR_LIGHT_GREEN = 0x3,
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COLOR_BLUE = 0x4,
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COLOR_LIGHT_BLUE = 0x5,
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COLOR_DARK_RED = 0x6,
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COLOR_CYAN = 0x7,
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COLOR_RED = 0x8,
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COLOR_LIGHT_RED = 0x9,
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COLOR_YELLOW = 0xa,
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COLOR_LIGHT_YELLOW = 0xb,
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COLOR_DARK_GREEN = 0xc,
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COLOR_MAGENTA = 0xd,
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COLOR_GRAY = 0xe,
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COLOR_WHITE = 0xf
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};
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// joystick positions for GTSTCK
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typedef enum GTSTCK_Direction {
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STCK_none = 0,
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STCK_N,
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STCK_NE,
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STCK_E,
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STCK_SE,
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STCK_S,
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STCK_SW,
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STCK_W,
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STCK_NW
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};
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// parameter for GTSTCK
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typedef enum GTSTCK_Param {
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STCK_Cursors,
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STCK_Joy1,
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STCK_Joy2
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};
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// parameter for GTTRIG
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typedef enum GTTRIG_Param {
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TRIG_Spacebar,
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TRIG_Joy1_A,
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TRIG_Joy2_A,
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TRIG_Joy1_B,
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TRIG_Joy2_B
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};
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#define VSYNC() __asm__("HALT");
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#endif
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