rename source files for consistency

1 files changed, 0 insertions, 1468 deletions

diff --git a/dostsr.c b/dostsr.c
deleted file mode 100644
index a9319d3..0000000
--- a/dostsr.c
+++ /dev/null
@@ -1,1468 +0,0 @@
-/*
- * VBMouse - DOS mouse driver resident part
- * 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.
- */
-
-#include <stdlib.h>
-#include <string.h>
-#include <i86.h>
-
-#include "dlog.h"
-#include "ps2.h"
-#include "int10vga.h"
-#include "int16kbd.h"
-#include "int2fwin.h"
-#include "int33.h"
-#include "vbox.h"
-#include "vmware.h"
-#include "dostsr.h"
-
-#define MSB_MASK 0x8000U
-
-TSRDATA data;
-
-static const uint16_t default_cursor_graphic[] = {
-    0x3FFF, 0x1FFF, 0x0FFF, 0x07FF,
-    0x03FF, 0x01FF, 0x00FF, 0x007F,
-    0x003F, 0x001F, 0x01FF, 0x00FF,
-    0x30FF, 0xF87F, 0xF87F, 0xFCFF,
-    0x0000, 0x4000, 0x6000, 0x7000,
-    0x7800, 0x7C00, 0x7E00, 0x7F00,
-    0x7F80, 0x7C00, 0x6C00, 0x4600,
-    0x0600, 0x0300, 0x0300, 0x0000
-};
-
-/** Constraint current mouse position to the user-set window. */
-static void bound_position_to_window(void)
-{
-	if (data.pos.x < data.min.x) data.pos.x = data.min.x;
-	if (data.pos.x > data.max.x) data.pos.x = data.max.x;
-	if (data.pos.y < data.min.y) data.pos.y = data.min.y;
-	if (data.pos.y > data.max.y) data.pos.y = data.max.y;
-}
-
-/** Constraints coordinate value to the desired granularity,
- *  which must be a power of two. */
-static inline int16_t snap_to_grid(int16_t val, int16_t granularity)
-{
-	// Build a bitmask that masks away the undesired low-order bits
-	return val & (-granularity);
-}
-
-static void hide_text_cursor(void)
-{
-	// Restore the character under the old position of the cursor
-	uint16_t __far *ch = get_video_char(&data.video_mode,
-	                                    data.cursor_pos.x / 8, data.cursor_pos.y / 8);
-	*ch = data.cursor_prev_char;
-	data.cursor_visible = false;
-}
-
-static void show_text_cursor(void)
-{
-	uint16_t __far *ch = get_video_char(&data.video_mode,
-	                                    data.pos.x / 8, data.pos.y / 8);
-	data.cursor_prev_char = *ch;
-	data.cursor_pos = data.pos;
-	*ch = (*ch & data.cursor_text_and_mask) ^ data.cursor_text_xor_mask;
-	data.cursor_visible = true;
-}
-
-/** Given the new position of the cursor, compute the both our source
- *  (i.e. the mouse cursor shape) and target clipping areas.
- *  @param cursor_pos cursor position
- *  @param start top left corner of clipping box in screen
- *  @param size size of the clipping box in screen as well as cursor shape
- *  @param offset top left corner of clipping box in mouse cursor shape */
-static bool get_graphic_cursor_area(struct point __far *cursor_pos,
-                                    struct point __far *start,
-                                    struct point __far *size,
-                                    struct point __far *offset)
-{
-	start->x = (cursor_pos->x / data.screen_scale.x) - data.cursor_hotspot.x;
-	start->y = (cursor_pos->y / data.screen_scale.y) - data.cursor_hotspot.y;
-	size->x = GRAPHIC_CURSOR_WIDTH;
-	size->y = GRAPHIC_CURSOR_HEIGHT;
-	offset->x = 0;
-	offset->y = 0;
-
-	// Start clipping around
-	// Cursor is left/top of visible area
-	if (start->x <= -size->x) {
-		return false;
-	} else if (start->x < 0) {
-		offset->x += -start->x;
-		size->x   -= -start->x;
-		start->x = 0;
-	}
-	if (start->y <= -size->y) {
-		return false;
-	} else if (start->y < 0) {
-		offset->y += -start->y;
-		size->y   -= -start->y;
-		start->y = 0;
-	}
-	// Cursor is right/bottom of visible area
-	if (start->x > data.video_mode.pixels_width) {
-		return false; // Don't render cursor
-	} else if (start->x + size->x > data.video_mode.pixels_width) {
-		size->x -= (start->x + size->x) - data.video_mode.pixels_width;
-	}
-	if (start->y > data.video_mode.pixels_height) {
-		return false;
-	} else if (start->y + size->y > data.video_mode.pixels_height) {
-		size->y -= (start->y + size->y) - data.video_mode.pixels_height;
-	}
-
-	return true;
-}
-
-static inline uint8_t * get_prev_graphic_cursor_scanline(unsigned bytes_per_line,
-                                                         unsigned num_lines,
-                                                         unsigned plane,
-                                                         unsigned y)
-{
-	return &data.cursor_prev_graphic[((plane * num_lines) + y) * bytes_per_line];
-}
-
-static inline uint16_t get_graphic_cursor_and_mask_line(unsigned y)
-{
-	return data.cursor_graphic[y];
-}
-
-static inline uint16_t get_graphic_cursor_xor_mask_line(unsigned y)
-{
-	return data.cursor_graphic[GRAPHIC_CURSOR_HEIGHT + y];
-}
-
-/** Compute the total number of bytes between start and end pixels,
- *  rounding up as necessary to cover all bytes. */
-static inline unsigned get_scanline_segment_bytes(unsigned bits_per_pixel, unsigned start, unsigned size)
-{
-	// Get starting byte (round down)
-	unsigned start_byte = (start * bits_per_pixel) / 8;
-	// Get end byte (round up)
-	unsigned end_byte = (((start + size) * bits_per_pixel) + (8-1)) / 8;
-
-	return end_byte - start_byte;
-}
-
-/** Creates a bitmask that extracts the topmost N bits of a byte. */
-static inline uint8_t build_pixel_mask(unsigned bits_per_pixel)
-{
-	if      (bits_per_pixel == 1) return 0x80;
-	else if (bits_per_pixel == 2) return 0xC0;
-	else if (bits_per_pixel == 4) return 0xF0;
-	else                          return 0xFF;
-}
-
-/** Hides the graphical mouse cursor, by restoring the contents of
- *  data.cursor_prev_graphic (i.e. what was below the cursor before we drew it)
- *  to video memory. */
-static void hide_graphic_cursor(void)
-{
-	struct modeinfo *info = &data.video_mode;
-	struct point start, size, offset;
-	unsigned cursor_bytes_per_line;
-	unsigned plane, y;
-
-	// Compute the area where the cursor is currently positioned
-	if (!get_graphic_cursor_area(&data.cursor_pos, &start, &size, &offset)) {
-		return;
-	}
-
-	// For each scanline, we will copy this amount of bytes
-	cursor_bytes_per_line = get_scanline_segment_bytes(info->bits_per_pixel,
-	                                                   start.x, size.x);
-
-	for (plane = 0; plane < info->num_planes; plane++) {
-		if (info->num_planes > 1) vga_select_plane(plane);
-
-		for (y = 0; y < size.y; y++) {
-			uint8_t __far *line = get_video_scanline(info, start.y + y)
-			                      + (start.x * info->bits_per_pixel) / 8;
-			uint8_t *prev = get_prev_graphic_cursor_scanline(cursor_bytes_per_line, size.y,
-			                                                 plane, y);
-
-			// Restore this scaline from cursor_prev
-			_fmemcpy(line, prev, cursor_bytes_per_line);
-		}
-	}
-
-	data.cursor_visible = false;
-}
-
-/** Renders the graphical cursor.
- *  It will also backup whatever pixels are below
- *  the cursor area to cursor_prev_graphic. */
-static void show_graphic_cursor(void)
-{
-	const struct modeinfo *info = &data.video_mode;
-	struct point start, size, offset;
-	unsigned cursor_bytes_per_line;
-	const uint8_t msb_pixel_mask = build_pixel_mask(info->bits_per_pixel);
-	unsigned plane, y;
-
-	// Compute the area where the cursor is supposed to be drawn
-	if (!get_graphic_cursor_area(&data.pos, &start, &size, &offset)) {
-		return;
-	}
-
-	// For each scanline, we will copy this amount of bytes
-	cursor_bytes_per_line = get_scanline_segment_bytes(info->bits_per_pixel,
-	                                                   start.x, size.x);
-
-	for (plane = 0; plane < info->num_planes; plane++) {
-		if (info->num_planes > 1) vga_select_plane(plane);
-
-		for (y = 0; y < size.y; y++) {
-			uint8_t __far *line = get_video_scanline(info, start.y + y)
-			                      + (start.x * info->bits_per_pixel) / 8;
-			uint8_t *prev = get_prev_graphic_cursor_scanline(cursor_bytes_per_line, size.y,
-			                                                 plane, y);
-			uint16_t cursor_and_mask = get_graphic_cursor_and_mask_line(offset.y + y)
-			                           << offset.x;
-			uint16_t cursor_xor_mask = get_graphic_cursor_xor_mask_line(offset.y + y)
-			                           << offset.x;
-			unsigned x;
-
-			// First, backup this scanline to prev before any changes
-			_fmemcpy(prev, line, cursor_bytes_per_line);
-
-			if (info->bits_per_pixel < 8) {
-				uint8_t pixel_mask = msb_pixel_mask;
-				uint8_t pixel = *line;
-
-				// when start.x is not pixel aligned,
-				// scaline points the previous multiple of pixels_per_byte;
-				// and the initial pixel will not be at the MSB of it.
-				// advance the pixel_mask accordingly
-				pixel_mask >>= (start.x * info->bits_per_pixel) % 8;
-
-				for (x = 0; x < size.x; x++) {
-					// The MSBs of each mask correspond to the current pixel
-					if (!(cursor_and_mask & MSB_MASK)) {
-						pixel &= ~pixel_mask;
-					}
-					if (cursor_xor_mask & MSB_MASK) {
-						pixel ^= pixel_mask;
-					}
-
-					// Advance to the next pixel
-					pixel_mask >>= info->bits_per_pixel;
-					if (!pixel_mask) {
-						// Time to advance to the next byte
-						*line = pixel; // Save current byte first
-						pixel = *(++line);
-						pixel_mask = msb_pixel_mask;
-					}
-
-					// Advance to the next bit in the cursor mask
-					cursor_and_mask <<= 1;
-					cursor_xor_mask <<= 1;
-				}
-
-				if (pixel_mask != msb_pixel_mask) {
-					// We ended up in the middle of a byte, save it
-					*line = pixel;
-				}
-			} else if (info->bits_per_pixel == 8) {
-				// Simplified version for byte-aligned pixels
-				for (x = 0; x < size.x; x++) {
-					uint8_t pixel = 0;
-
-					if (cursor_and_mask & MSB_MASK) {
-						pixel = *line;
-					}
-					if (cursor_xor_mask & MSB_MASK) {
-						pixel ^= 0x0F; // Use 0x0F as "white pixel"
-					}
-
-					// Advance to the next pixel
-					*line = pixel;
-					++line;
-
-					// Advance to the next bit in the cursor mask
-					cursor_and_mask <<= 1;
-					cursor_xor_mask <<= 1;
-				}
-			}
-		}
-	}
-
-	data.cursor_pos = data.pos;
-	data.cursor_visible = true;
-}
-
-/** Refreshes cursor position and visibility. */
-static void refresh_cursor(void)
-{
-	bool should_show = data.visible_count >= 0;
-	bool pos_changed, needs_refresh;
-
-#if USE_WIN386
-	// Windows 386 is already rendering the cursor for us.
-	// Hide our own.
-	if (data.w386cursor) should_show = false;
-#endif
-
-#if USE_VIRTUALBOX
-	if (data.vbavail && data.vbwantcursor) {
-		// We want to use the VirtualBox host cursor.
-		// See if we have to update its visibility.
-		int err = 0;
-		if (should_show != data.cursor_visible) {
-			err = vbox_set_pointer_visible(&data.vb, should_show);
-			if (err == 0 && data.vbhaveabs) {
-				data.cursor_visible = should_show;
-			}
-		}
-		if (err == 0 && data.vbhaveabs) {
-			// No need to refresh the cursor; VirtualBox is already showing it for us.
-			return;
-		}
-	}
-#endif
-
-	pos_changed = data.cursor_pos.x != data.pos.x || data.cursor_pos.y != data.pos.y;
-	needs_refresh = should_show && pos_changed || should_show != data.cursor_visible;
-
-	if (!needs_refresh) {
-		// Nothing to do
-		return;
-	}
-
-	if (data.video_mode.type == VIDEO_TEXT) {
-		// Text video mode
-		if (data.cursor_visible) {
-			// Hide the cursor at the old position if any
-			hide_text_cursor();
-		}
-		if (should_show) {
-			// Show the cursor at the new position
-			show_text_cursor();
-		}
-	} else if (data.video_mode.type != VIDEO_UNKNOWN) {
-		// Graphic video modes
-
-		bool video_planar = data.video_mode.num_planes > 1;
-		struct videoregs regs;
-		// If current video mode is planar,
-		// we will have to play with the VGA registers
-		// so let's save and restore them.
-		if (video_planar) {
-			vga_save_registers(&regs);
-			vga_set_graphics_mode(&regs, 0, 0);
-		}
-
-		if (data.cursor_visible) {
-			hide_graphic_cursor();
-		}
-		if (should_show) {
-			show_graphic_cursor();
-		}
-
-		if (video_planar) {
-			vga_restore_register(&regs);
-		}
-	} else {
-		// Unknown video mode, don't render cursor.
-	}
-}
-
-/** Forcefully hides the mouse cursor if shown. */
-static void hide_cursor(void)
-{
-#if USE_VIRTUALBOX
-	if (data.vbavail && data.vbwantcursor) {
-		vbox_set_pointer_visible(&data.vb, false);
-		if (data.vbhaveabs) {
-			data.cursor_visible = false;
-		}
-	}
-#endif
-
-	if (data.cursor_visible) {
-		if (data.video_mode.type == VIDEO_TEXT) {
-			hide_text_cursor();
-		} else if (data.video_mode.type != VIDEO_UNKNOWN) {
-			hide_graphic_cursor();
-		}
-	}
-}
-
-/** Loads the current graphic cursor,
- *  which in this case means uploading it to the host. */
-static void load_cursor(void)
-{
-#if USE_VIRTUALBOX
-	if (data.vbavail && data.vbwantcursor) {
-		VMMDevReqMousePointer *req = (VMMDevReqMousePointer *) data.vb.buf;
-		const unsigned width = GRAPHIC_CURSOR_WIDTH, height = GRAPHIC_CURSOR_HEIGHT;
-		uint8_t  *output = req->pointerData;
-		unsigned int y, x;
-
-		memset(req, 0, sizeof(VMMDevReqMousePointer));
-
-		req->header.size = vbox_req_mouse_pointer_size(width, height);
-		req->header.version = VMMDEV_REQUEST_HEADER_VERSION;
-		req->header.requestType = VMMDevReq_SetPointerShape;
-		req->header.rc = -1;
-
-		req->fFlags = VBOX_MOUSE_POINTER_SHAPE;
-		req->xHot = BOUND(data.cursor_hotspot.x, 0, width);
-		req->yHot = BOUND(data.cursor_hotspot.y, 0, height);
-		req->width = width;
-		req->height = height;
-
-		// AND mask
-		// int33 format is 1-bit per pixel packed into 16-bit LE values,
-		// while VirtualBox wants 1-bit per pixel packed into 8-bit.
-		// All we have to do is byteswap 16-bit values.
-		for (y = 0; y < height; ++y) {
-			uint16_t cursor_line = get_graphic_cursor_and_mask_line(y);
-			output[0] = (cursor_line >> 8) & 0xFF;
-			output[1] = cursor_line & 0xFF;
-			output += GRAPHIC_CURSOR_SCANLINE_LEN;
-		}
-
-		// XOR mask
-		// int33 format is again 1-bit per pixel packed into 16-bit LE values,
-		// however VirtualBox wants 4-byte per pixel packed "RGBA".
-		for (y = 0; y < height; ++y) {
-			uint16_t cursor_line = get_graphic_cursor_xor_mask_line(y);
-
-			for (x = 0; x < width; ++x) {
-				// MSB of line is current mask bit, we shift it on each iteration
-				uint8_t val = (cursor_line & MSB_MASK) ? 0xFF : 0;
-
-				output[0] = val;
-				output[1] = val;
-				output[2] = val;
-				output[3] = 0;
-
-				cursor_line <<= 1;
-				output += 4;
-			}
-		}
-
-		dlog_puts("Loading cursor to VBox");
-
-		vbox_send_request(data.vb.iobase, data.vb.dds.physicalAddress);
-
-		if (req->header.rc != 0) {
-			dlog_puts("Could not send cursor to VirtualBox");
-			return;
-		}
-
-		// After we send this message, it looks like VirtualBox shows the cursor
-		// even if we didn't actually want it to be visible at this point.
-		vbox_set_pointer_visible(&data.vb, false);
-	}
-#endif
-}
-
-/** Reloads the information about the current video mode. */
-static void reload_video_info(void)
-{
-	get_current_video_mode_info(&data.video_mode);
-
-	data.screen_max.x = data.video_mode.pixels_width - 1;
-	data.screen_max.y = data.video_mode.pixels_height - 1;
-	data.screen_scale.x = 1;
-	data.screen_scale.y = 1;
-	data.screen_granularity.x = 1;
-	data.screen_granularity.y = 1;
-
-	// The actual range of coordinates expected by int33 clients
-	// is, for some reason, different than real resolution in some modes.
-	// For example, 320x... modes are mapped to 640x... pixels.
-	if (data.video_mode.pixels_width == 320) {
-		data.screen_max.x = 640 - 1;
-		data.screen_scale.x = 640 / 320;
-	}
-
-	// In text modes, we are supposed to always round the mouse cursor
-	// to character boundaries.
-	if (data.video_mode.type == VIDEO_TEXT) {
-		// Always assume 8x8 character size irregardless of true font
-		data.screen_granularity.x = 8;
-		data.screen_granularity.y = 8;
-	}
-
-	dlog_print("Current video mode=");
-	dlog_printx(data.video_mode.mode);
-	dlog_print(" screen_max=");
-	dlog_printd(data.screen_max.x);
-	dlog_putc(',');
-	dlog_printd(data.screen_max.y);
-	dlog_endline();
-}
-
-/** True if the current video is different from what we have stored
- *  and we probably need to recompute video mode info. */
-static inline bool video_mode_changed(void)
-{
-	uint8_t cur_mode = bda_get_video_mode() & ~0x80;
-
-	if (cur_mode != data.video_mode.mode)
-		return true;
-
-	if (data.video_mode.type == VIDEO_TEXT) {
-		// Also check to see if the font size was changed..
-		return data.video_mode.pixels_height != (bda_get_last_row()+1) * 8;
-	} else {
-		return false;
-	}
-}
-
-/** Checks if the video mode has changed and if so
- *  refreshes the information about the current video mode.  */
-static void refresh_video_info(void)
-{
-	if (video_mode_changed()) {
-		if (data.cursor_visible) {
-			// Assume cursor is lost with no way to restore prev contents
-			data.cursor_visible = false;
-		}
-
-		reload_video_info();
-
-		if (data.video_mode.type != VIDEO_UNKNOWN) {
-			// If we know the screen size for this mode, then reset the window to it
-			data.min.x = 0;
-			data.min.y = 0;
-			data.max.x = data.screen_max.x;
-			data.max.y = data.screen_max.y;
-		}
-	}
-}
-
-/** Calls the application-registered event handler. */
-static void call_event_handler(void (__far *handler)(), uint16_t events,
-                               uint16_t buttons, int16_t x, int16_t y,
-                               int16_t delta_x, int16_t delta_y)
-{
-#if TRACE_EVENTS
-	dlog_print("calling event handler events=");
-	dlog_printx(events);
-	dlog_print(" buttons=");
-	dlog_printx(buttons);
-	dlog_print(" x=");
-	dlog_printd(x);
-	dlog_print(" y=");
-	dlog_printd(y);
-	dlog_print(" dx=");
-	dlog_printd(delta_x);
-	dlog_print(" dy=");
-	dlog_printd(delta_y);
-	dlog_endline();
-#endif
-
-	__asm {
-		mov ax, [events]
-		mov bx, [buttons]
-		mov cx, [x]
-		mov dx, [y]
-		mov si, [delta_x]
-		mov di, [delta_y]
-
-		call dword ptr [handler]
-	}
-}
-
-/** Process a mouse event internally.
- *  @param buttons currently pressed buttons as a bitfield
- *  @param absolute whether mouse coordinates are an absolute value
- *  @param x y if absolute, then absolute coordinates in screen pixels
- *             if relative, then relative coordinates in mickeys
- *  @param z relative wheel mouse movement
- */
-static void handle_mouse_event(uint16_t buttons, bool absolute, int x, int y, int z)
-{
-	uint16_t events = 0;
-	int i;
-
-#if TRACE_EVENTS
-	dlog_print("handle mouse event");
-	if (absolute) dlog_print(" absolute");
-	dlog_print(" buttons=");
-	dlog_printx(buttons);
-	dlog_print(" x=");
-	dlog_printd(x);
-	dlog_print(" y=");
-	dlog_printd(y);
-	dlog_print(" z=");
-	dlog_printd(z);
-	dlog_endline();
-#endif
-
-	if (absolute) {
-		// Absolute movement: x,y are in screen pixels units
-		events |= INT33_EVENT_MASK_ABSOLUTE;
-
-		if (x != data.pos.x || y != data.pos.y) {
-			events |= INT33_EVENT_MASK_MOVEMENT;
-
-			// Simulate a fake relative movement in mickeys
-			// This is almost certainly broken.
-			// Programs that expect relative movement data
-			// will almost never set a mickeyPerPixel value.
-			// So all we can do is guess.
-			if (data.abs_pos.x >= 0 && data.abs_pos.y >= 0) {
-				data.delta.x += (x - data.abs_pos.x) * 8;
-				data.delta.y += (y - data.abs_pos.y) * 8;
-			}
-			data.abs_pos.x = x;
-			data.abs_pos.y = y;
-
-			// Set the new absolute position
-			data.pos.x = x;
-			data.pos.y = y;
-			data.pos_frac.x = 0;
-			data.pos_frac.y = 0;
-		}
-	} else if (x || y) {
-		// Relative movement: x,y are in mickeys
-		uint16_t ticks = bda_get_tick_count_lo();
-		unsigned ax = abs(x), ay = abs(y);
-
-		events |= INT33_EVENT_MASK_MOVEMENT;
-
-		// Check if around one second has passed
-		if ((ticks - data.last_ticks) >= 18) {
-			data.total_motion = 0;
-			data.last_ticks = ticks;
-		}
-
-		// If more than the double speed threshold has been moved in the last second,
-		// double the speed
-		data.total_motion += ax * ax + ay * ay;
-		if (data.total_motion > data.doubleSpeedThreshold * data.doubleSpeedThreshold) {
-			x *= 2;
-			y *= 2;
-		}
-
-		data.delta.x += x;
-		data.delta.y += y;
-		data.delta_frac.x = 0;
-		data.delta_frac.y = 0;
-		data.abs_pos.x = -1;
-		data.abs_pos.y = -1;
-
-		// Convert mickeys into pixels
-		data.pos.x += scalei_rem(x, data.mickeysPerLine.x, 8, &data.pos_frac.x);
-		data.pos.y += scalei_rem(y, data.mickeysPerLine.y, 8, &data.pos_frac.y);
-	}
-
-	bound_position_to_window();
-
-#if USE_WHEEL
-	if (data.haswheel && z) {
-		if (!data.usewheelapi && (data.wheel_up_key || data.wheel_down_key)) {
-			// Emulate keystrokes on wheel movement
-			if (z < 0 && data.wheel_up_key) {
-				for (; z < 0; z++) {
-					int16_store_keystroke(data.wheel_up_key);
-				}
-			} else if (z > 0 && data.wheel_up_key) {
-				for (; z > 0; z--) {
-					int16_store_keystroke(data.wheel_down_key);
-				}
-			}
-		} else {
-			events |= INT33_EVENT_MASK_WHEEL_MOVEMENT;
-			// Higher byte of buttons contains wheel movement
-			buttons |= (z & 0xFF) << 8;
-			// Accumulate delta wheel movement
-			data.wheel_delta += z;
-			data.wheel_last.x = data.pos.x;
-			data.wheel_last.y = data.pos.y;
-		}
-	}
-#endif
-
-	// Update button status
-	for (i = 0; i < NUM_BUTTONS; ++i) {
-		uint8_t btn = 1 << i;
-		uint8_t evt = 0;
-		if ((buttons & btn) && !(data.buttons & btn)) {
-			// Button pressed
-			evt = 1 << (1 + (i * 2)); // Press event mask
-			data.button[i].pressed.count++;
-			data.button[i].pressed.last.x = data.pos.x;
-			data.button[i].pressed.last.y = data.pos.y;
-		} else if (!(buttons & btn) && (data.buttons & btn)) {
-			// Button released
-			evt = 1 << (2 + (i * 2)); // Release event mask
-			data.button[i].released.count++;
-			data.button[i].released.last.x = data.pos.x;
-			data.button[i].released.last.y = data.pos.y;
-		}
-		events |= evt;
-	}
-	data.buttons = buttons;
-
-	refresh_cursor();
-
-	events &= data.event_mask;
-	if (data.event_handler && events) {
-		x = snap_to_grid(data.pos.x, data.screen_granularity.x);
-		y = snap_to_grid(data.pos.y, data.screen_granularity.y);
-
-		call_event_handler(data.event_handler, events,
-		                   buttons, x, y, data.delta.x, data.delta.y);
-	}
-}
-
-/** PS/2 BIOS calls this routine to notify mouse events. */
-static void ps2_mouse_handler(uint16_t word1, uint16_t word2, uint16_t word3, uint16_t word4)
-{
-#pragma aux ps2_mouse_handler "*" parm caller [ax] [bx] [cx] [dx] modify [ax bx cx dx si di es fs gs]
-
-	unsigned status;
-	int x, y, z;
-	bool abs = false;
-
-#if TRACE_EVENTS
-	dlog_print("ps2 callback ");
-	dlog_printx(word1);
-	dlog_putc(' ');
-	dlog_printx(word2);
-	dlog_putc(' ');
-	dlog_printx(word3);
-	dlog_putc(' ');
-	dlog_printx(word4);
-	dlog_endline();
-#endif /* TRACE_EVENTS */
-
-	// Decode the PS2 event args
-	// In a normal IBM PS/2 BIOS (incl. VirtualBox/Bochs/qemu/SeaBIOS):
-	//  word1 low byte = status (following PS2M_STATUS_*)
-	//  word2 low byte = x
-	//  word3 low byte = y
-	//  word4 = always zero
-	// In a PS/2 BIOS with wheel support (incl. VMware/DOSBox-X):
-	// taken from CuteMouse/KoKo:
-	//  word1 high byte = x
-	//  word1 low byte = status
-	//  word2 low byte = y
-	//  word3 low byte = z
-	//  word4 = always zero
-	// VirtualBox/Bochs/qemu/SeaBIOS behave like a normal one,
-	// but they also store the raw contents of all mouse packets in the EBDA (starting 0x28 = packet 0).
-	// Other BIOSes don't do that so it is not a reliable option either.
-	// So, how to detect which BIOS we have?
-	// For now we are always assuming "normal" PS/2 BIOS.
-	// But with VirtualBox integration on we'll get the wheel packet from the EBDA,
-	// and with VMWare integration on we'll get it from the VMware protocol.
-	status = (uint8_t) word1;
-	x = (uint8_t) word2;
-	y = (uint8_t) word3;
-	z = 0;
-	(void) word4;
-
-	// Sign-extend X, Y as per the status byte
-	x =   status & PS2M_STATUS_X_NEG ? 0xFF00 | x : x;
-	y = -(status & PS2M_STATUS_Y_NEG ? 0xFF00 | y : y);
-
-#if USE_VIRTUALBOX
-	if (data.vbavail) {
-		uint16_t vbx, vby;
-		if ((vbox_get_mouse(&data.vb, &abs, &vbx, &vby) == 0) && abs) {
-			// VirtualBox gives unsigned coordinates from 0...0xFFFFU,
-			// scale to 0..screen_size (in pixels).
-			refresh_video_info();
-			// If the user is using a window larger than the screen, use it.
-			x = scaleu(vbx, 0xFFFFU, MAX(data.max.x, data.screen_max.x));
-			y = scaleu(vby, 0xFFFFU, MAX(data.max.y, data.screen_max.y));
-			data.vbhaveabs = true;
-		} else {
-			// VirtualBox does not support absolute coordinates,
-			// or user has disabled them.
-			data.vbhaveabs = false;
-			// Rely on PS/2 relative coordinates.
-		}
-
-#if USE_WHEEL
-		// VirtualBox/Bochs BIOS does not pass wheel data to the callback,
-		// so we will fetch it directly from the BIOS data segment.
-		if (data.haswheel) {
-			int8_t __far * mouse_packet = MK_FP(bda_get_ebda_segment(), 0x28);
-			z = mouse_packet[3];
-		}
-#endif
-	}
-#endif /* USE_VIRTUALBOX */
-
-#if USE_VMWARE
-	if (data.vmwavail) {
-		uint32_t vmwstatus = vmware_abspointer_status();
-		uint16_t data_avail = vmwstatus & VMWARE_ABSPOINTER_STATUS_MASK_DATA;
-
-#if TRACE_EVENTS
-		dlog_print("vmware status=0x");
-		dlog_printx(vmwstatus >> 16);
-		dlog_print(" ");
-		dlog_printx(vmwstatus & 0xFFFF);
-		dlog_endline();
-#endif
-
-		if (data_avail >= VMWARE_ABSPOINTER_DATA_PACKET_SIZE) {
-			struct vmware_abspointer_data vmw;
-			vmware_abspointer_data(VMWARE_ABSPOINTER_DATA_PACKET_SIZE, &vmw);
-
-#if TRACE_EVENTS
-			dlog_print("vmware pstatus=0x");
-			dlog_printx(status);
-			dlog_print(" x=0x");
-			dlog_printx(vmw.x);
-			dlog_print(" z=");
-			dlog_printd((int8_t) (uint8_t) vmw.z);
-			dlog_endline();
-#endif
-
-			if (vmw.status & VMWARE_ABSPOINTER_STATUS_RELATIVE) {
-				x = (int16_t) vmw.x;
-				y = (int16_t) vmw.y;
-				z = (int8_t) (uint8_t) vmw.z;
-			} else {
-				abs = true;
-				// Scale to screen coordinates
-				refresh_video_info();
-				x = scaleu(vmw.x & 0xFFFFU, 0xFFFFU,
-				           MAX(data.max.x, data.screen_max.x));
-				y = scaleu(vmw.y & 0xFFFFU, 0xFFFFU,
-				           MAX(data.max.y, data.screen_max.y));
-				z = (int8_t) (uint8_t) vmw.z;
-			}
-
-			if (vmw.status & VMWARE_ABSPOINTER_STATUS_BUTTON_LEFT) {
-				status |= PS2M_STATUS_BUTTON_1;
-			}
-			if (vmw.status & VMWARE_ABSPOINTER_STATUS_BUTTON_RIGHT) {
-				status |= PS2M_STATUS_BUTTON_2;
-			}
-			if (vmw.status & VMWARE_ABSPOINTER_STATUS_BUTTON_MIDDLE) {
-				status |= PS2M_STATUS_BUTTON_3;
-			}
-		} else {
-			return; // Ignore the PS/2 packet otherwise, it is likely garbage
-		}
-	}
-#endif /* USE_VMWARE */
-
-	handle_mouse_event(status & (PS2M_STATUS_BUTTON_1 | PS2M_STATUS_BUTTON_2 | PS2M_STATUS_BUTTON_3),
-	                   abs, x, y, z);
-}
-
-void __declspec(naked) __far ps2_mouse_callback()
-{
-	__asm {
-		pusha
-		push ds
-		push es
-		push fs
-		push gs
-
-		; 8 + 4 saved registers, 24 bytes
-		; plus 4 bytes for retf address
-		; = 28 bytes of stack before callback args
-
-		mov bp, sp
-		push cs
-		pop ds
-
-		mov	ax,[bp+28+6]	; Status
-		mov	bx,[bp+28+4]	; X
-		mov	cx,[bp+28+2]	; Y
-		mov	dx,[bp+28+0]	; Z
-
-		call ps2_mouse_handler
-
-		pop gs
-		pop fs
-		pop es
-		pop ds
-		popa
-
-		retf
-	}
-}
-
-#if USE_INTEGRATION
-static void set_absolute(bool enable)
-{
-#if USE_VIRTUALBOX
-	data.vbhaveabs = false;
-	if (data.vbavail) {
-		int err = vbox_set_mouse(&data.vb, enable, false);
-		if (enable && !err) {
-			dlog_puts("VBox absolute mouse enabled");
-			data.vbhaveabs = true;
-		} else if (!enable) {
-			dlog_puts("VBox absolute mouse disabled");
-		}
-	}
-#endif /* USE_VIRTUALBOX */
-#if USE_VMWARE
-	if (data.vmwavail) {
-		if (enable) {
-			uint16_t data_avail;
-			// It looks like a reset of the PS/2 mouse completely disables
-			// the vmware interface, so we have to reenable it from scratch.
-			vmware_abspointer_cmd(VMWARE_ABSPOINTER_CMD_ENABLE);
-			vmware_abspointer_data_clear();
-			vmware_abspointer_cmd(VMWARE_ABSPOINTER_CMD_REQUEST_ABSOLUTE);
-
-			dlog_puts("VMware absolute mouse enabled");
-		} else {
-			vmware_abspointer_cmd(VMWARE_ABSPOINTER_CMD_REQUEST_RELATIVE);
-			vmware_abspointer_cmd(VMWARE_ABSPOINTER_CMD_DISABLE);
-
-			dlog_puts("VMware absolute mouse disabled");
-		}
-	}
-#endif /* USE_VMWARE */
-}
-#endif /* USE_INTEGRATION */
-
-static void reset_mouse_hardware()
-{
-	ps2m_enable(false);
-
-#if USE_WHEEL
-	if (data.usewheel && ps2m_detect_wheel()) {
-		// Detect wheel also reinitializes the mouse to the proper packet size
-		data.haswheel = true;
-	} else {
-		// Otherwise do an extra reset to return back to initial state, just in case
-		data.haswheel = false;
-		ps2m_init(PS2M_PACKET_SIZE_PLAIN);
-	}
-#else
-	ps2m_init(PS2M_PACKET_SIZE_PLAIN);
-#endif
-
-	ps2m_set_resolution(3);     // 3 = 200 dpi, 8 counts per millimeter
-	ps2m_set_sample_rate(4);    // 4 = 80 reports per second
-	ps2m_set_scaling_factor(1); // 1 = 1:1 scaling
-
-	ps2m_set_callback(get_cs():>ps2_mouse_callback);
-
-#if USE_INTEGRATION
-	// By default, enable absolute mouse
-	set_absolute(true);
-	// Reload hardware cursor
-	load_cursor();
-#endif
-
-	ps2m_enable(true);
-}
-
-/** Reset "software" mouse settings, i.e. those configurable by the client program. */
-static void reset_mouse_settings()
-{
-	data.event_mask = 0;
-	data.event_handler = 0;
-
-	data.mickeysPerLine.x = 8;
-	data.mickeysPerLine.y = 16;
-	data.doubleSpeedThreshold = 64;
-	data.min.x = 0;
-	data.max.x = data.screen_max.x;
-	data.min.y = 0;
-	data.max.y = data.screen_max.y;
-	data.visible_count = -1;
-	data.cursor_text_type = 0;
-	data.cursor_text_and_mask = 0xFFFFU;
-	data.cursor_text_xor_mask = 0x7700U;
-	data.cursor_hotspot.x = 0;
-	data.cursor_hotspot.y = 0;
-	memcpy(data.cursor_graphic, default_cursor_graphic, sizeof(data.cursor_graphic));
-
-#if USE_WHEEL
-	data.usewheelapi = false;
-#endif
-
-	refresh_cursor(); // This will hide the cursor and update data.cursor_visible
-}
-
-/** Reset the current mouse state and throw away past events. */
-static void reset_mouse_state()
-{
-	int i;
-	data.pos.x = data.min.x;
-	data.pos.y = data.min.y;
-	data.pos_frac.x = 0;
-	data.pos_frac.y = 0;
-	data.delta.x = 0;
-	data.delta.y = 0;
-	data.delta_frac.x = 0;
-	data.delta_frac.y = 0;
-	data.abs_pos.x = -1;
-	data.abs_pos.y = -1;
-	data.buttons = 0;
-	for (i = 0; i < NUM_BUTTONS; i++) {
-		data.button[i].pressed.count = 0;
-		data.button[i].pressed.last.x = 0;
-		data.button[i].pressed.last.y = 0;
-		data.button[i].released.count = 0;
-		data.button[i].released.last.x = 0;
-		data.button[i].released.last.y = 0;
-	}
-	data.wheel_delta = 0;
-	data.cursor_visible = false;
-	data.cursor_pos.x = 0;
-	data.cursor_pos.y = 0;
-	data.cursor_prev_char = 0;
-	memset(data.cursor_prev_graphic, 0, sizeof(data.cursor_prev_graphic));
-}
-
-static void return_clear_wheel_counter(union INTPACK __far *r)
-{
-	r->x.cx = snap_to_grid(data.wheel_last.x, data.screen_granularity.x);
-	r->x.dx = snap_to_grid(data.wheel_last.y, data.screen_granularity.y);
-	r->x.bx = data.wheel_delta;
-	data.wheel_last.x = 0;
-	data.wheel_last.y = 0;
-	data.wheel_delta = 0;
-}
-
-static void return_clear_button_counter(union INTPACK __far *r, struct buttoncounter *c)
-{
-	r->x.cx = snap_to_grid(c->last.x, data.screen_granularity.x);
-	r->x.dx = snap_to_grid(c->last.y, data.screen_granularity.y);
-	r->x.bx = c->count;
-	c->last.x = 0;
-	c->last.y = 0;
-	c->count = 0;
-}
-
-/** Entry point for our int33 API. */
-static void int33_handler(union INTPACK r)
-#pragma aux int33_handler "*" parm caller [] modify [ax bx cx dx si di es fs gs]
-{
-	switch (r.x.ax) {
-	case INT33_RESET_MOUSE:
-		dlog_puts("Mouse reset");
-		reload_video_info();
-		reset_mouse_settings();
-		reset_mouse_hardware();
-		reset_mouse_state();
-		r.x.ax = INT33_MOUSE_FOUND;
-		r.x.bx = NUM_BUTTONS;
-		break;
-	case INT33_SHOW_CURSOR:
-		data.visible_count++;
-		refresh_cursor();
-		break;
-	case INT33_HIDE_CURSOR:
-		data.visible_count--;
-		refresh_cursor();
-		break;
-	case INT33_GET_MOUSE_POSITION:
-#if TRACE_EVENTS
-		dlog_puts("Mouse get position");
-#endif
-		r.x.cx = snap_to_grid(data.pos.x, data.screen_granularity.x);
-		r.x.dx = snap_to_grid(data.pos.y, data.screen_granularity.y);
-		r.x.bx = data.buttons;
-#if USE_WHEEL
-		if (data.haswheel) {
-			r.h.bh = data.wheel_delta;
-			data.wheel_delta = 0;
-		}
-#endif
-		break;
-	case INT33_SET_MOUSE_POSITION:
-#if TRACE_EVENTS
-		dlog_puts("Mouse set position");
-#endif
-		data.pos.x = r.x.cx;
-		data.pos.y = r.x.dx;
-		data.pos_frac.x = 0;
-		data.pos_frac.y = 0;
-		data.delta.x = 0;
-		data.delta.y = 0;
-		data.delta_frac.x = 0;
-		data.delta_frac.y = 0;
-		bound_position_to_window();
-		break;
-	case INT33_GET_BUTTON_PRESSED_COUNTER:
-		r.x.ax = data.buttons;
-#if USE_WHEEL
-		if (data.haswheel) {
-			r.h.bh = data.wheel_delta;
-			if (r.x.bx == -1) {
-				// Asked for wheel information
-				return_clear_wheel_counter(&r);
-				break;
-			}
-		}
-#endif
-		// Regular button information
-		return_clear_button_counter(&r,
-		    &data.button[MIN(r.x.bx, NUM_BUTTONS - 1)].pressed);
-		break;
-	case INT33_GET_BUTTON_RELEASED_COUNTER:
-		r.x.ax = data.buttons;
-#if USE_WHEEL
-		if (data.haswheel) {
-			r.h.bh = data.wheel_delta;
-			if (r.x.bx == -1) {
-				// Asked for wheel information
-				return_clear_wheel_counter(&r);
-				break;
-			}
-		}
-#endif
-		return_clear_button_counter(&r,
-		    &data.button[MIN(r.x.bx, NUM_BUTTONS - 1)].released);
-		break;
-	case INT33_SET_HORIZONTAL_WINDOW:
-		dlog_print("Mouse set horizontal window [");
-		dlog_printd(r.x.cx);
-		dlog_putc(',');
-		dlog_printd(r.x.dx);
-		dlog_puts("]");
-		// Recheck in case someone changed the video mode
-		refresh_video_info();
-		data.min.x = r.x.cx;
-		data.max.x = r.x.dx;
-		bound_position_to_window();
-		break;
-	case INT33_SET_VERTICAL_WINDOW:
-		dlog_print("Mouse set vertical window [");
-		dlog_printd(r.x.cx);
-		dlog_putc(',');
-		dlog_printd(r.x.dx);
-		dlog_puts("]");
-		refresh_video_info();
-		data.min.y = r.x.cx;
-		data.max.y = r.x.dx;
-		bound_position_to_window();
-		break;
-	case INT33_SET_GRAPHICS_CURSOR:
-		dlog_puts("Mouse set graphics cursor");
-		hide_cursor();
-		data.cursor_hotspot.x = r.x.bx;
-		data.cursor_hotspot.y = r.x.cx;
-		_fmemcpy(data.cursor_graphic, MK_FP(r.x.es, r.x.dx), sizeof(data.cursor_graphic));
-		load_cursor();
-		refresh_cursor();
-		break;
-	case INT33_SET_TEXT_CURSOR:
-		dlog_print("Mouse set text cursor ");
-		dlog_printd(r.x.bx);
-		dlog_endline();
-		hide_cursor();
-		data.cursor_text_type = r.x.bx;
-		data.cursor_text_and_mask = r.x.cx;
-		data.cursor_text_xor_mask = r.x.dx;
-		refresh_cursor();
-		break;
-	case INT33_GET_MOUSE_MOTION:
-#if TRACE_EVENTS
-		dlog_puts("Mouse get motion");
-#endif
-		r.x.cx = data.delta.x;
-		r.x.dx = data.delta.y;
-		data.delta.x = 0;
-		data.delta.y = 0;
-		break;
-	case INT33_SET_EVENT_HANDLER:
-		dlog_puts("Mouse set event handler");
-		data.event_mask = r.x.cx;
-		data.event_handler = MK_FP(r.x.es, r.x.dx);
-		break;
-	case INT33_SET_MOUSE_SPEED:
-		dlog_print("Mouse set speed x=");
-		dlog_printd(r.x.cx);
-		dlog_print(" y=");
-		dlog_printd(r.x.dx);
-		dlog_endline();
-		data.mickeysPerLine.x = r.x.cx;
-		data.mickeysPerLine.y = r.x.dx;
-		break;
-	case INT33_SET_SPEED_DOUBLE_THRESHOLD:
-		dlog_print("Mouse set speed double threshold=");
-		dlog_printd(r.x.dx);
-		dlog_endline();
-		data.doubleSpeedThreshold = r.x.dx;
-		break;
-	case INT33_EXCHANGE_EVENT_HANDLER:
-		dlog_puts("Mouse exchange event handler");
-		data.event_mask = r.x.cx;
-	    {
-		    void (__far *prev_event_handler)() = data.event_handler;
-			data.event_handler = MK_FP(r.x.es, r.x.dx);
-			r.x.es = FP_SEG(prev_event_handler);
-			r.x.dx = FP_OFF(prev_event_handler);
-	    }
-		break;
-	case INT33_GET_MOUSE_STATUS_SIZE:
-		dlog_puts("Mouse get status size");
-		r.x.bx = sizeof(TSRDATA);
-		break;
-	case INT33_SAVE_MOUSE_STATUS:
-		dlog_puts("Mouse save status");
-		_fmemcpy(MK_FP(r.x.es, r.x.dx), &data, sizeof(TSRDATA));
-		break;
-	case INT33_LOAD_MOUSE_STATUS:
-		dlog_puts("Mouse load status");
-		_fmemcpy(&data, MK_FP(r.x.es, r.x.dx), sizeof(TSRDATA));
-		break;
-	case INT33_SET_MOUSE_SENSITIVITY:
-		dlog_print("Mouse set speed x=");
-		dlog_printd(r.x.bx);
-		dlog_print(" y=");
-		dlog_printd(r.x.cx);
-		dlog_print(" threshold=");
-		dlog_printd(r.x.dx);
-		dlog_endline();
-		data.mickeysPerLine.x = r.x.bx;
-		data.mickeysPerLine.y = r.x.cx;
-		data.doubleSpeedThreshold = r.x.dx;
-		break;
-	case INT33_GET_MOUSE_SENSITIVITY:
-		r.x.bx = data.mickeysPerLine.x;
-		r.x.cx = data.mickeysPerLine.y;
-		r.x.dx = data.doubleSpeedThreshold;
-		break;
-	case INT33_RESET_SETTINGS:
-		dlog_puts("Mouse reset settings");
-		reload_video_info();
-		reset_mouse_settings();
-		reset_mouse_state();
-		r.x.ax = INT33_MOUSE_FOUND;
-		r.x.bx = NUM_BUTTONS;
-		break;
-	case INT33_GET_LANGUAGE:
-		r.x.bx = 0;
-		break;
-	case INT33_GET_DRIVER_INFO:
-		dlog_puts("Mouse get driver info");
-		r.h.bh = REPORTED_VERSION_MAJOR;
-		r.h.bl = REPORTED_VERSION_MINOR;
-		r.h.ch = INT33_MOUSE_TYPE_PS2;
-		r.h.cl = 0;
-		break;
-	case INT33_GET_MAX_COORDINATES:
-		r.x.bx = 0;
-		r.x.cx = MAX(data.screen_max.x, data.max.x);
-		r.x.dx = MAX(data.screen_max.y, data.max.y);
-		break;
-	case INT33_GET_WINDOW:
-		r.x.ax = data.min.x;
-		r.x.bx = data.min.y;
-		r.x.cx = data.max.x;
-		r.x.dx = data.max.y;
-		break;
-#if USE_WHEEL
-	// Wheel API extensions:
-	case INT33_GET_CAPABILITIES:
-		dlog_puts("Mouse get capabitilies");
-		r.x.ax = INT33_WHEEL_API_MAGIC; // Driver supports wheel API
-		r.x.bx = 0;
-		r.x.cx = data.haswheel ? INT33_CAPABILITY_MOUSE_API : 0;
-		data.usewheelapi = true; // Someone calling this function likely wants to use wheel API
-		break;
-#endif
-	// Our internal API extensions:
-	case INT33_GET_TSR_DATA:
-		dlog_puts("Get TSR data");
-		r.x.es = FP_SEG(&data);
-		r.x.di = FP_OFF(&data);
-		break;
-	default:
-		dlog_print("Unknown mouse function ax=");
-		dlog_printx(r.x.ax);
-		dlog_endline();
-		break;
-	}
-}
-
-// Can't use __interrupt, it makes a call to GETDS on the runtime
-void __declspec(naked) __far int33_isr(void)
-{
-	__asm {
-		pusha
-		push ds
-		push es
-		push fs
-		push gs
-
-		mov bp, sp
-		push cs
-		pop ds
-
-		call int33_handler
-
-		pop gs
-		pop fs
-		pop es
-		pop ds
-		popa
-		iret
-	}
-}
-
-#if USE_WIN386
-/** Windows will call this function to notify events when we are inside a DOS box. */
-static void windows_mouse_handler(int action, int x, int y, int buttons, int events)
-#pragma aux windows_mouse_handler "*" parm [ax] [bx] [cx] [dx] [si] modify [ax bx cx dx es]
-{
-	switch (action) {
-	case VMD_ACTION_MOUSE_EVENT:
-		(void) events;
-		// Forward event to our internal system
-		handle_mouse_event(buttons, true, x, y, 0);
-		break;
-	case VMD_ACTION_HIDE_CURSOR:
-		dlog_puts("VMD_ACTION_HIDE_CURSOR");
-		data.w386cursor = true;
-		refresh_cursor();
-		break;
-	case VMD_ACTION_SHOW_CURSOR:
-		dlog_puts("VMD_ACTION_SHOW_CURSOR");
-		data.w386cursor = false;
-		refresh_cursor();
-		break;
-	}
-}
-
-void __declspec(naked) __far windows_mouse_callback()
-{
-	__asm {
-		pusha
-		push ds
-		push es
-		push fs
-		push gs
-
-		mov bp, sp
-		push cs
-		pop ds
-
-		call windows_mouse_handler
-
-		pop gs
-		pop fs
-		pop es
-		pop ds
-		popa
-
-		retf
-	}
-}
-
-static void int2f_handler(union INTPACK r)
-#pragma aux int2f_handler "*" parm caller [] modify [ax bx cx dx es]
-{
-	switch (r.x.ax) {
-	case INT2F_NOTIFY_WIN386_STARTUP:
-		dlog_print("Windows is starting, version=");
-		dlog_printx(r.x.di);
-		dlog_endline();
-		data.w386_startup.version = 3;
-		data.w386_startup.next = MK_FP(r.x.es, r.x.bx);
-		data.w386_startup.device_driver = 0;
-		data.w386_startup.device_driver_data = 0;
-		data.w386_startup.instance_data = &data.w386_instance;
-		data.w386_instance[0].ptr = &data;
-		data.w386_instance[0].size = sizeof(data);
-		data.w386_instance[1].ptr = 0;
-		data.w386_instance[1].size = 0;
-		r.x.es = FP_SEG(&data.w386_startup);
-		r.x.bx = FP_OFF(&data.w386_startup);
-		break;
-	case INT2F_NOTIFY_DEVICE_CALLOUT:
-		switch (r.x.bx) {
-		case VMD_DEVICE_ID:
-			switch (r.x.cx) {
-			case VMD_CALLOUT_TEST:
-				r.x.cx = 1; // Yes, we are here!
-				break;
-			case VMD_CALLOUT_GET_DOS_MOUSE_API:
-				// Windows is asking our mouse driver for the hook function address
-				r.x.ds = get_cs();
-				r.x.si = FP_OFF(windows_mouse_callback);
-				r.x.ax = 0; // Yes, we are here!
-				break;
-			}
-			break;
-		}
-		break;
-	}
-}
-
-void __declspec(naked) __far int2f_isr(void)
-{
-	__asm {
-		pusha
-		push ds
-		push es
-		push fs
-		push gs
-
-		mov bp, sp
-		push cs
-		pop ds
-
-		call int2f_handler
-
-		pop gs
-		pop fs
-		pop es
-		pop ds
-		popa
-
-		; Jump to the next handler in the chain
-		jmp dword ptr cs:[data + 4] ; wasm doesn't support structs, this is data.prev_int2f_handler
-	}
-}
-#endif
-
-static LPTSRDATA int33_get_tsr_data(void);
-#pragma aux int33_get_tsr_data = \
-	"xor ax, ax" \
-	"mov es, ax" \
-	"mov di, ax" \
-	"mov ax, 0x73" \
-	"int 0x33"   \
-	__value [es di] \
-	__modify [ax]
-
-static LPTSRDATA local_get_tsr_data(void);
-#pragma aux local_get_tsr_data = \
-	"mov ax, cs" \
-	"mov es, ax" \
-	"mov di, offset data" \
-	__value [es di] \
-	__modify [ax]
-
-LPTSRDATA __far get_tsr_data(bool installed)
-{
-	if (installed) {
-		return int33_get_tsr_data();
-	} else {
-		return local_get_tsr_data();
-	}
-}
-
-int resident_end;