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/*
* VBMouse - int33 API defines
* Copyright (C) 2022 Javier S. Pedro
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#ifndef INT33_H
#define INT33_H
#include <stdint.h>
#include <stdbool.h>
enum INT33_API {
/** Reinitializes mouse hardware and resets mouse to default driver values.
* On return, ax = 0xFFFF, bx = number of buttons. */
INT33_RESET_MOUSE = 0,
/** Increment the cursor visible counter. The cursor is shown when the counter is >= 0.
* Note: the internal cursor counter is always <= 0. */
INT33_SHOW_CURSOR = 1,
/** Decrement the cursor visible counter. The cursor is shown when the counter is >= 0. */
INT33_HIDE_CURSOR = 2,
/** Gets the current mouse position and button status.
* @returns cx = horizontal pos, dx = vertical pos,
* bx = button status (bitfield, lsb = button 0/left). */
INT33_GET_MOUSE_POSITION = 3,
/** Sets the current mouse position.
* @param cx = horizontal pos, dx = vertical pos. */
INT33_SET_MOUSE_POSITION = 4,
/** Gets the number of times a mouse button was pressed since the last call.
* @param bx = button number
* @returns ax = current all button status (bitfield),
* bx = count of times button was pressed,
* cx = horizontal pos at last press,
* dx = vetical pos at last press */
INT33_GET_BUTTON_PRESSED_COUNTER = 5,
/** Gets the number of times a mouse button was released since the last call.
* @param bx = button number
* @returns ax = current all button status (bitfield),
* bx = count of times button was released,
* cx = horizontal pos at last release,
* dx = vetical pos at last release */
INT33_GET_BUTTON_RELEASED_COUNTER = 6,
/** @param cx = minimum horizontal position, dx = maximum horizontal position. */
INT33_SET_HORIZONTAL_WINDOW = 7,
/** @param cx = minimum vertical position, dx = maximum vertical position. */
INT33_SET_VERTICAL_WINDOW = 8,
/** Configures graphicsmode mouse cursor.
* @param bx horizontal hotspot , cx vertical hotspot
* @param es:dx address of cursor shape bitmap */
INT33_SET_GRAPHICS_CURSOR = 9,
/** Configures textmode mouse cursor.
* @param bx 1 for hardware cursor, 0 for software cursor
* @param cx for software cursor, AND mask; for hardware cursor, start scanline.
* @param dx for software cursor, XOR mask; for hardware cursor, end scanline. */
INT33_SET_TEXT_CURSOR = 0xA,
/** Gets total relative mouse distance (in mickeys) since the last call.
* @param cx horizontal distance , dx vertical distance */
INT33_GET_MOUSE_MOTION = 0xB,
/** Replaces the current routine for event handling.
* @param es:dx address of the new event handler
* @param cx event mask (see INT33_EVENT_MASK) */
INT33_SET_EVENT_HANDLER = 0xC,
/** Sets the mickey-per-8-pixels ratio, controlling the cursor speed.
* @param cx horizontal speed, dx vertical speed */
INT33_SET_MOUSE_SPEED = 0xF,
/** If the mouse is moved more than this mickeys in one second,
* the mouse motion is doubled.
* @param cx doubling threshold (mickeys per second) */
INT33_SET_SPEED_DOUBLE_THRESHOLD = 0x13,
/** Replaces the current routine for event handling,
* but also returns the old one.
* @param es:dx address of the new event handler
* @param cx event mask (see INT33_EVENT_MASK)
* @return es:dx address of the previous event handler. */
INT33_EXCHANGE_EVENT_HANDLER = 0x14,
/** Query the size of the memory required to save a copy of the mouse status.
* @return bx buffer needed. */
INT33_GET_MOUSE_STATUS_SIZE = 0x15,
INT33_SAVE_MOUSE_STATUS = 0x16,
INT33_LOAD_MOUSE_STATUS = 0x17,
/** Sets both speed and speed-doubling threshold in one call.
* @param bx horizontal speed, cx vertical speed
* @param dx doubling threshold (mickeys per second). */
INT33_SET_MOUSE_SENSITIVITY = 0x1A,
/** Gets current speed and speed-doubling threshold.
* @return bx horizontal speed, cx vertical speed
* @return dx doubling threshold (mickeys per second). */
INT33_GET_MOUSE_SENSITIVITY = 0x1B,
/** Resets mouse to default driver values.
* On return, ax = 0xFFFF, bx = number of buttons. */
INT33_RESET_SETTINGS = 0x21,
/** Gets language for messages.
* @return bx language code. */
INT33_GET_LANGUAGE = 0x23,
/** Gets driver information.
* On return, bx = major:minor version, ch = INT33_MOUSE_TYPE, CL = irq number (or 0). */
INT33_GET_DRIVER_INFO = 0x24,
/** Gets the current video mode maximum X & Y positions.
* @return cx max x, dx max y. */
INT33_GET_MAX_COORDINATES = 0x26,
/** Gets the current window coordinates (set by INT33_SET_HORIZONTAL_WINDOW).
* @return ax min_x, bx min_y, cx max_x, d max_y. */
INT33_GET_WINDOW = 0x31,
/** Get pointer to driver's copyright string in es:di. */
INT33_GET_COPYRIGHT_STRING = 0x4D,
/** Get pointer to driver's version string in es:di. */
INT33_GET_VERSION_STRING = 0x6D,
// Wheel API Extensions:
INT33_GET_CAPABILITIES = 0x11,
// Our internal API functions:
/** Obtains a pointer to the driver's data in es:di. */
INT33_GET_TSR_DATA = 0x73,
};
enum INT33_CAPABILITY_BITS {
INT33_CAPABILITY_MOUSE_API = 1 << 0
};
#define INT33_WHEEL_API_MAGIC 'WM'
#define INT33_MOUSE_FOUND 0xFFFF
enum INT33_MOUSE_TYPE {
INT33_MOUSE_TYPE_BUS = 1,
INT33_MOUSE_TYPE_SERIAL = 2,
INT33_MOUSE_TYPE_INPORT = 3,
INT33_MOUSE_TYPE_PS2 = 4,
INT33_MOUSE_TYPE_HP = 5
};
enum INT33_BUTTON_MASK {
INT33_BUTTON_MASK_LEFT = 1 << 0,
INT33_BUTTON_MASK_RIGHT = 1 << 1,
INT33_BUTTON_MASK_CENTER = 1 << 2
};
enum INT33_EVENT_MASK {
INT33_EVENT_MASK_MOVEMENT = 1 << 0,
INT33_EVENT_MASK_LEFT_BUTTON_PRESSED = 1 << 1,
INT33_EVENT_MASK_LEFT_BUTTON_RELEASED = 1 << 2,
INT33_EVENT_MASK_RIGHT_BUTTON_PRESSED = 1 << 3,
INT33_EVENT_MASK_RIGHT_BUTTON_RELEASED = 1 << 4,
INT33_EVENT_MASK_CENTER_BUTTON_PRESSED = 1 << 5,
INT33_EVENT_MASK_CENTER_BUTTON_RELEASED = 1 << 6,
// Wheel API Extensions:
/** Wheel mouse movement. */
INT33_EVENT_MASK_WHEEL_MOVEMENT = 1 << 7,
// Absolute API extensions:
/** The source of the event is an absolute pointing device. */
INT33_EVENT_MASK_ABSOLUTE = 1 << 8,
INT33_EVENT_MASK_ALL = 0xFFFF
};
#pragma aux INT33_CB far loadds parm [ax] [bx] [cx] [dx] [si] [di] modify []
static uint16_t int33_reset(void);
#pragma aux int33_reset = \
"mov ax, 0x0" \
"int 0x33" \
__value [ax] \
__modify [ax bx]
static void int33_set_horizontal_window(int16_t min, int16_t max);
#pragma aux int33_set_horizontal_window = \
"mov ax, 0x7" \
"int 0x33" \
__parm [cx] [dx] \
__modify [ax]
static void int33_set_vertical_window(int16_t min, int16_t max);
#pragma aux int33_set_vertical_window = \
"mov ax, 0x8" \
"int 0x33" \
__parm [cx] [dx] \
__modify [ax]
static void int33_set_event_handler(uint16_t event_mask, void (__far *handler)());
#pragma aux int33_set_event_handler = \
"mov ax, 0xC" \
"int 0x33" \
__parm [cx] [es dx] \
__modify [ax]
static void int33_set_mouse_speed(int16_t x, int16_t y);
#pragma aux int33_set_mouse_speed = \
"mov ax, 0xF" \
"int 0x33" \
__parm [cx] [dx] \
__modify [ax]
static void int33_set_sensitivity(uint16_t sens_x, uint16_t sens_y, uint16_t double_speed_threshold);
#pragma aux int33_set_sensitivity = \
"mov ax, 0x1A" \
"int 0x33" \
__parm [bx] [cx] [dx] \
__modify [ax]
static uint16_t int33_get_driver_version(void);
#pragma aux int33_get_driver_version = \
"mov bx, 0" \
"mov ax, 0x24" \
"int 0x33" \
"cmp ax, -1" \
"jne end" \
"error:" \
"mov bx, 0" \
"end:" \
__value [bx] \
__modify [ax bx cx dx]
static int int33_get_max_coordinates(uint16_t *x, uint16_t *y);
#pragma aux int33_get_max_coordinates = \
"mov ax, 0x26" \
"mov bx, -1" \
"xor cx, cx" \
"xor dx, dx" \
"int 0x33" \
"mov [si], cx" \
"mov [di], dx" \
"error:" \
__parm [si] [di] \
__value [bx] \
__modify [ax bx cx dx]
static uint16_t int33_get_capabilities(void);
#pragma aux int33_get_capabilities = \
"mov ax, 0x11" \
"int 0x33" \
"cmp ax, 0x574D" /* Compare against the INT33_WHEEL_API_MAGIC number. */ \
"je end" \
"xor cx, cx" /* If magic not correct, assume not supported and return 0. */ \
"end:" \
__value [cx] \
__modify [ax bx cx]
#endif /* INT33_H */
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