mirror of
https://github.com/86Box/86Box.git
synced 2026-02-22 09:35:32 -07:00
79bccfeb77
Fixed serial driver, re-worked API and updated other files accordingly. Fixed serial mouse driver for new serial port, prepared for Mouse Systems mode.
133 lines
2.9 KiB
C
133 lines
2.9 KiB
C
/*
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* 86Box A hypervisor and IBM PC system emulator that specializes in
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* running old operating systems and software designed for IBM
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* PC systems and compatibles from 1981 through fairly recent
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* system designs based on the PCI bus.
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*
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* This file is part of the 86Box distribution.
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*
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* Implementation of Serial Mouse devices.
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*
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* Based on the 86Box Serial Mouse driver as a framework.
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*
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* Version: @(#)mouse_serial.c 1.0.2 2017/05/06
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*
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* Author: Fred N. van Kempen, <decwiz@yahoo.com>
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*/
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#include <stdlib.h>
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#include "ibm.h"
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#include "timer.h"
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#include "serial.h"
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#include "mouse.h"
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#include "mouse_serial.h"
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typedef struct mouse_serial_t {
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int port;
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int pos,
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delay;
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int oldb;
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SERIAL *serial;
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} mouse_serial_t;
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/* Callback from serial driver: RTS was toggled. */
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static void
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sermouse_callback(SERIAL *serial, void *priv)
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{
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mouse_serial_t *ms = (mouse_serial_t *)priv;
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/* Start a timer to wake us up in a little while. */
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ms->pos = -1;
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ms->delay = 5000 * (1 << TIMER_SHIFT);
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}
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/* Callback timer expired, now send our "mouse ID" to the serial port. */
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static void
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sermouse_timer(void *priv)
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{
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mouse_serial_t *ms = (mouse_serial_t *)priv;
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ms->delay = 0;
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if (ms->pos == -1) {
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ms->pos = 0;
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/* This identifies a two-button Microsoft Serial mouse. */
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serial_write_fifo(ms->serial, 'M');
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}
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}
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static uint8_t
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sermouse_poll(int x, int y, int z, int b, void *priv)
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{
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mouse_serial_t *ms = (mouse_serial_t *)priv;
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uint8_t data[3];
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if (!x && !y && b == ms->oldb) return(1);
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ms->oldb = b;
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if (x>127) x = 127;
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if (y>127) y = 127;
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if (x<-128) x = -128;
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if (y<-128) y = -128;
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/* Use Microsoft format. */
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data[0] = 0x40;
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data[0] |= (((y>>6)&3)<<2);
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data[0] |= ((x>>6)&3);
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if (b&1) data[0] |= 0x20;
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if (b&2) data[0] |= 0x10;
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data[1] = x & 0x3F;
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data[2] = y & 0x3F;
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/* Send the packet to the bottom-half of the attached port. */
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#if 0
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pclog("Mouse_Serial: data %02X %02X %02X\n", data[0], data[1], data[2]);
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#endif
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serial_write_fifo(ms->serial, data[0]);
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serial_write_fifo(ms->serial, data[1]);
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serial_write_fifo(ms->serial, data[2]);
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return(0);
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}
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static void *
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sermouse_init(void)
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{
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mouse_serial_t *ms = (mouse_serial_t *)malloc(sizeof(mouse_serial_t));
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memset(ms, 0x00, sizeof(mouse_serial_t));
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ms->port = SERMOUSE_PORT;
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/* Attach a serial port to the mouse. */
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ms->serial = serial_attach(ms->port, sermouse_callback, ms);
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timer_add(sermouse_timer, &ms->delay, &ms->delay, ms);
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return(ms);
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}
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static void
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sermouse_close(void *priv)
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{
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mouse_serial_t *ms = (mouse_serial_t *)priv;
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/* Detach serial port from the mouse. */
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serial_attach(ms->port, NULL, NULL);
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free(ms);
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}
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mouse_t mouse_serial_microsoft = {
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"Microsoft 2-button mouse (serial)",
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"msserial",
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MOUSE_TYPE_SERIAL,
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sermouse_init,
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sermouse_close,
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sermouse_poll
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};
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