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86Box/src/machine/m_olivetti_m24.c
waltje 7c67e867c8 Major commit, cleaning a lot of old stuff. 
IBM.H is gone, video stuff re-organized. Keyboard stuff reorganized.
Machines that have their own video, mouse and/or keyboard now have all this in their machine file.
Fixed and other cleanups here and there.
2017-11-05 02:00:50 -05:00

794 lines
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C
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/*
* 86Box A hypervisor and IBM PC system emulator that specializes in
* running old operating systems and software designed for IBM
* PC systems and compatibles from 1981 through fairly recent
* system designs based on the PCI bus.
*
* This file is part of the 86Box distribution.
*
* Emulation of the Olivetti M24.
*
* Version: @(#)m_olivetti_m24.c 1.0.2 2017/11/03
*
* Authors: Sarah Walker, <http://pcem-emulator.co.uk/>
* Miran Grca, <mgrca8@gmail.com>
* Fred N. van Kempen, <decwiz@yahoo.com>
*
* Copyright 2008-2017 Sarah Walker.
* Copyright 2016,2017 Miran Grca.
* Copyright 2017 Fred N. van Kempen.
*/
#include <stdio.h>
#include <stdint.h>
#include <string.h>
#include <stdlib.h>
#include <wchar.h>
#include "../86box.h"
#include "../io.h"
#include "../pic.h"
#include "../pit.h"
#include "../ppi.h"
#include "../nmi.h"
#include "../mem.h"
#include "../timer.h"
#include "../device.h"
#include "../nvr.h"
#include "../keyboard.h"
#include "../mouse.h"
#include "../game/gameport.h"
#include "../sound/sound.h"
#include "../sound/snd_speaker.h"
#include "../video/video.h"
#include "machine.h"
#define STAT_PARITY 0x80
#define STAT_RTIMEOUT 0x40
#define STAT_TTIMEOUT 0x20
#define STAT_LOCK 0x10
#define STAT_CD 0x08
#define STAT_SYSFLAG 0x04
#define STAT_IFULL 0x02
#define STAT_OFULL 0x01
typedef struct {
/* Video stuff. */
mem_mapping_t mapping;
uint8_t crtc[32];
int crtcreg;
uint8_t *vram;
uint8_t charbuffer[256];
uint8_t ctrl;
uint32_t base;
uint8_t cgamode, cgacol;
uint8_t stat;
int linepos, displine;
int sc, vc;
int con, coff, cursoron, blink;
int64_t vsynctime;
int vadj;
int lineff;
uint16_t ma, maback;
int dispon;
int64_t dispontime, dispofftime;
int64_t vidtime;
int firstline, lastline;
/* Keyboard stuff. */
int wantirq;
uint8_t command;
uint8_t status;
uint8_t out;
uint8_t output_port;
int param,
param_total;
uint8_t params[16];
uint8_t scan[7];
/* Mouse stuff. */
int mouse_mode;
int x, y, b;
} olim24_t;
static uint8_t crtcmask[32] = {
0xff, 0xff, 0xff, 0xff, 0x7f, 0x1f, 0x7f, 0x7f,
0xf3, 0x1f, 0x7f, 0x1f, 0x3f, 0xff, 0x3f, 0xff,
0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
};
static uint8_t key_queue[16];
static int key_queue_start = 0,
key_queue_end = 0;
static void
recalc_timings(olim24_t *m24)
{
double _dispontime, _dispofftime, disptime;
if (m24->cgamode & 1) {
disptime = m24->crtc[0] + 1;
_dispontime = m24->crtc[1];
} else {
disptime = (m24->crtc[0] + 1) << 1;
_dispontime = m24->crtc[1] << 1;
}
_dispofftime = disptime - _dispontime;
_dispontime *= CGACONST / 2;
_dispofftime *= CGACONST / 2;
m24->dispontime = (int64_t)(_dispontime * (1 << TIMER_SHIFT));
m24->dispofftime = (int64_t)(_dispofftime * (1 << TIMER_SHIFT));
}
static void
vid_out(uint16_t addr, uint8_t val, void *priv)
{
olim24_t *m24 = (olim24_t *)priv;
uint8_t old;
switch (addr) {
case 0x3d4:
m24->crtcreg = val & 31;
break;
case 0x3d5:
old = m24->crtc[m24->crtcreg];
m24->crtc[m24->crtcreg] = val & crtcmask[m24->crtcreg];
if (old != val) {
if (m24->crtcreg < 0xe || m24->crtcreg > 0x10) {
fullchange = changeframecount;
recalc_timings(m24);
}
}
break;
case 0x3d8:
m24->cgamode = val;
break;
case 0x3d9:
m24->cgacol = val;
break;
case 0x3de:
m24->ctrl = val;
m24->base = (val & 0x08) ? 0x4000 : 0;
break;
}
}
static uint8_t
vid_in(uint16_t addr, void *priv)
{
olim24_t *m24 = (olim24_t *)priv;
uint8_t ret = 0xff;
switch (addr) {
case 0x3d4:
ret = m24->crtcreg;
break;
case 0x3d5:
ret = m24->crtc[m24->crtcreg];
break;
case 0x3da:
ret = m24->stat;
break;
}
return(ret);
}
static void
vid_write(uint32_t addr, uint8_t val, void *priv)
{
olim24_t *m24 = (olim24_t *)priv;
m24->vram[addr & 0x7FFF]=val;
m24->charbuffer[ ((int)(((m24->dispontime - m24->vidtime) * 2) / (CGACONST / 2))) & 0xfc] = val;
m24->charbuffer[(((int)(((m24->dispontime - m24->vidtime) * 2) / (CGACONST / 2))) & 0xfc) | 1] = val;
}
static uint8_t
vid_read(uint32_t addr, void *priv)
{
olim24_t *m24 = (olim24_t *)priv;
return(m24->vram[addr & 0x7FFF]);
}
static void
vid_poll(void *priv)
{
olim24_t *m24 = (olim24_t *)priv;
uint16_t ca = (m24->crtc[15] | (m24->crtc[14] << 8)) & 0x3fff;
int drawcursor;
int x, c;
int oldvc;
uint8_t chr, attr;
uint16_t dat, dat2;
int cols[4];
int col;
int oldsc;
if (!m24->linepos) {
m24->vidtime += m24->dispofftime;
m24->stat |= 1;
m24->linepos = 1;
oldsc = m24->sc;
if ((m24->crtc[8] & 3) == 3)
m24->sc = (m24->sc << 1) & 7;
if (m24->dispon) {
if (m24->displine < m24->firstline) {
m24->firstline = m24->displine;
}
m24->lastline = m24->displine;
for (c = 0; c < 8; c++) {
if ((m24->cgamode & 0x12) == 0x12) {
buffer->line[m24->displine][c] = 0;
if (m24->cgamode & 1)
buffer->line[m24->displine][c + (m24->crtc[1] << 3) + 8] = 0;
else
buffer->line[m24->displine][c + (m24->crtc[1] << 4) + 8] = 0;
} else {
buffer->line[m24->displine][c] = (m24->cgacol & 15) + 16;
if (m24->cgamode & 1)
buffer->line[m24->displine][c + (m24->crtc[1] << 3) + 8] = (m24->cgacol & 15) + 16;
else
buffer->line[m24->displine][c + (m24->crtc[1] << 4) + 8] = (m24->cgacol & 15) + 16;
}
}
if (m24->cgamode & 1) {
for (x = 0; x < m24->crtc[1]; x++) {
chr = m24->charbuffer[ x << 1];
attr = m24->charbuffer[(x << 1) + 1];
drawcursor = ((m24->ma == ca) && m24->con && m24->cursoron);
if (m24->cgamode & 0x20) {
cols[1] = (attr & 15) + 16;
cols[0] = ((attr >> 4) & 7) + 16;
if ((m24->blink & 16) && (attr & 0x80) && !drawcursor)
cols[1] = cols[0];
} else {
cols[1] = (attr & 15) + 16;
cols[0] = (attr >> 4) + 16;
}
if (drawcursor) {
for (c = 0; c < 8; c++)
buffer->line[m24->displine][(x << 3) + c + 8] = cols[(fontdatm[chr][((m24->sc & 7) << 1) | m24->lineff] & (1 << (c ^ 7))) ? 1 : 0] ^ 15;
} else {
for (c = 0; c < 8; c++)
buffer->line[m24->displine][(x << 3) + c + 8] = cols[(fontdatm[chr][((m24->sc & 7) << 1) | m24->lineff] & (1 << (c ^ 7))) ? 1 : 0];
}
m24->ma++;
}
} else if (!(m24->cgamode & 2)) {
for (x = 0; x < m24->crtc[1]; x++) {
chr = m24->vram[((m24->ma << 1) & 0x3fff) + m24->base];
attr = m24->vram[(((m24->ma << 1) + 1) & 0x3fff) + m24->base];
drawcursor = ((m24->ma == ca) && m24->con && m24->cursoron);
if (m24->cgamode & 0x20) {
cols[1] = (attr & 15) + 16;
cols[0] = ((attr >> 4) & 7) + 16;
if ((m24->blink & 16) && (attr & 0x80))
cols[1] = cols[0];
} else {
cols[1] = (attr & 15) + 16;
cols[0] = (attr >> 4) + 16;
}
m24->ma++;
if (drawcursor) {
for (c = 0; c < 8; c++)
buffer->line[m24->displine][(x << 4) + (c << 1) + 8] =
buffer->line[m24->displine][(x << 4) + (c << 1) + 1 + 8] = cols[(fontdatm[chr][((m24->sc & 7) << 1) | m24->lineff] & (1 << (c ^ 7))) ? 1 : 0] ^ 15;
} else {
for (c = 0; c < 8; c++)
buffer->line[m24->displine][(x << 4) + (c << 1) + 8] =
buffer->line[m24->displine][(x << 4) + (c << 1) + 1 + 8] = cols[(fontdatm[chr][((m24->sc & 7) << 1) | m24->lineff] & (1 << (c ^ 7))) ? 1 : 0];
}
}
} else if (!(m24->cgamode & 16)) {
cols[0] = (m24->cgacol & 15) | 16;
col = (m24->cgacol & 16) ? 24 : 16;
if (m24->cgamode & 4) {
cols[1] = col | 3;
cols[2] = col | 4;
cols[3] = col | 7;
} else if (m24->cgacol & 32) {
cols[1] = col | 3;
cols[2] = col | 5;
cols[3] = col | 7;
} else {
cols[1] = col | 2;
cols[2] = col | 4;
cols[3] = col | 6;
}
for (x = 0; x < m24->crtc[1]; x++) {
dat = (m24->vram[((m24->ma << 1) & 0x1fff) + ((m24->sc & 1) * 0x2000) + m24->base] << 8) |
m24->vram[((m24->ma << 1) & 0x1fff) + ((m24->sc & 1) * 0x2000) + 1 + m24->base];
m24->ma++;
for (c = 0; c < 8; c++) {
buffer->line[m24->displine][(x << 4) + (c << 1) + 8] =
buffer->line[m24->displine][(x << 4) + (c << 1) + 1 + 8] = cols[dat >> 14];
dat <<= 2;
}
}
} else {
if (m24->ctrl & 1) {
dat2 = ((m24->sc & 1) * 0x4000) | (m24->lineff * 0x2000);
cols[0] = 0; cols[1] = /*(m24->cgacol & 15)*/15 + 16;
} else {
dat2 = (m24->sc & 1) * 0x2000;
cols[0] = 0; cols[1] = (m24->cgacol & 15) + 16;
}
for (x = 0; x < m24->crtc[1]; x++) {
dat = (m24->vram[((m24->ma << 1) & 0x1fff) + dat2] << 8) | m24->vram[((m24->ma << 1) & 0x1fff) + dat2 + 1];
m24->ma++;
for (c = 0; c < 16; c++) {
buffer->line[m24->displine][(x << 4) + c + 8] = cols[dat >> 15];
dat <<= 1;
}
}
}
} else {
cols[0] = ((m24->cgamode & 0x12) == 0x12) ? 0 : (m24->cgacol & 15) + 16;
if (m24->cgamode & 1) hline(buffer, 0, m24->displine, (m24->crtc[1] << 3) + 16, cols[0]);
else hline(buffer, 0, m24->displine, (m24->crtc[1] << 4) + 16, cols[0]);
}
if (m24->cgamode & 1)
x = (m24->crtc[1] << 3) + 16;
else
x = (m24->crtc[1] << 4) + 16;
m24->sc = oldsc;
if (m24->vc == m24->crtc[7] && !m24->sc)
m24->stat |= 8;
m24->displine++;
if (m24->displine >= 720) m24->displine = 0;
} else {
m24->vidtime += m24->dispontime;
if (m24->dispon) m24->stat &= ~1;
m24->linepos = 0;
m24->lineff ^= 1;
if (m24->lineff) {
m24->ma = m24->maback;
} else {
if (m24->vsynctime) {
m24->vsynctime--;
if (!m24->vsynctime)
m24->stat &= ~8;
}
if (m24->sc == (m24->crtc[11] & 31) || ((m24->crtc[8] & 3) == 3 && m24->sc == ((m24->crtc[11] & 31) >> 1))) {
m24->con = 0;
m24->coff = 1;
}
if (m24->vadj) {
m24->sc++;
m24->sc &= 31;
m24->ma = m24->maback;
m24->vadj--;
if (!m24->vadj) {
m24->dispon = 1;
m24->ma = m24->maback = (m24->crtc[13] | (m24->crtc[12] << 8)) & 0x3fff;
m24->sc = 0;
}
} else if (m24->sc == m24->crtc[9] || ((m24->crtc[8] & 3) == 3 && m24->sc == (m24->crtc[9] >> 1))) {
m24->maback = m24->ma;
m24->sc = 0;
oldvc = m24->vc;
m24->vc++;
m24->vc &= 127;
if (m24->vc == m24->crtc[6])
m24->dispon=0;
if (oldvc == m24->crtc[4]) {
m24->vc = 0;
m24->vadj = m24->crtc[5];
if (!m24->vadj) m24->dispon = 1;
if (!m24->vadj) m24->ma = m24->maback = (m24->crtc[13] | (m24->crtc[12] << 8)) & 0x3fff;
if ((m24->crtc[10] & 0x60) == 0x20)
m24->cursoron = 0;
else
m24->cursoron = m24->blink & 16;
}
if (m24->vc == m24->crtc[7]) {
m24->dispon = 0;
m24->displine = 0;
m24->vsynctime = (m24->crtc[3] >> 4) + 1;
if (m24->crtc[7]) {
if (m24->cgamode & 1)
x = (m24->crtc[1] << 3) + 16;
else
x = (m24->crtc[1] << 4) + 16;
m24->lastline++;
if ((x != xsize) || ((m24->lastline - m24->firstline) != ysize) || video_force_resize_get()) {
xsize = x;
ysize = m24->lastline - m24->firstline;
if (xsize < 64) xsize = 656;
if (ysize < 32) ysize = 200;
set_screen_size(xsize, ysize + 16);
if (video_force_resize_get())
video_force_resize_set(0);
}
video_blit_memtoscreen_8(0, m24->firstline - 8, 0, (m24->lastline - m24->firstline) + 16, xsize, (m24->lastline - m24->firstline) + 16);
frames++;
video_res_x = xsize - 16;
video_res_y = ysize;
if (m24->cgamode & 1) {
video_res_x /= 8;
video_res_y /= (m24->crtc[9] + 1) * 2;
video_bpp = 0;
} else if (!(m24->cgamode & 2)) {
video_res_x /= 16;
video_res_y /= (m24->crtc[9] + 1) * 2;
video_bpp = 0;
} else if (!(m24->cgamode & 16)) {
video_res_x /= 2;
video_res_y /= 2;
video_bpp = 2;
} else if (!(m24->ctrl & 1)) {
video_res_y /= 2;
video_bpp = 1;
}
}
m24->firstline = 1000;
m24->lastline = 0;
m24->blink++;
}
} else {
m24->sc++;
m24->sc &= 31;
m24->ma = m24->maback;
}
if ((m24->sc == (m24->crtc[10] & 31) || ((m24->crtc[8] & 3) == 3 && m24->sc == ((m24->crtc[10] & 31) >> 1))))
m24->con = 1;
}
if (m24->dispon && (m24->cgamode & 1)) {
for (x = 0; x < (m24->crtc[1] << 1); x++)
m24->charbuffer[x] = m24->vram[(((m24->ma << 1) + x) & 0x3fff) + m24->base];
}
}
}
static void
speed_changed(void *priv)
{
olim24_t *m24 = (olim24_t *)priv;
recalc_timings(m24);
}
static void
kbd_poll(void *priv)
{
olim24_t *m24 = (olim24_t *)priv;
keyboard_delay += (1000LL * TIMER_USEC);
if (m24->wantirq) {
m24->wantirq = 0;
picint(2);
#if ENABLE_KEYBOARD_LOG
pclog("M24: take IRQ\n");
#endif
}
if (!(m24->status & STAT_OFULL) && key_queue_start != key_queue_end) {
#if ENABLE_KEYBOARD_LOG
pclog("Reading %02X from the key queue at %i\n",
m24->out, key_queue_start);
#endif
m24->out = key_queue[key_queue_start];
key_queue_start = (key_queue_start + 1) & 0xf;
m24->status |= STAT_OFULL;
m24->status &= ~STAT_IFULL;
m24->wantirq = 1;
}
}
static void
kbd_adddata(uint8_t val)
{
key_queue[key_queue_end] = val;
key_queue_end = (key_queue_end + 1) & 0xf;
}
static void
kbd_write(uint16_t port, uint8_t val, void *priv)
{
olim24_t *m24 = (olim24_t *)priv;
#if ENABLE_KEYBOARD_LOG
pclog("M24: write %04X %02X\n", port, val);
#endif
#if 0
if (ram[8] == 0xc3) {
output = 3;
}
#endif
switch (port) {
case 0x60:
if (m24->param != m24->param_total) {
m24->params[m24->param++] = val;
if (m24->param == m24->param_total) {
switch (m24->command) {
case 0x11:
m24->mouse_mode = 0;
m24->scan[0] = m24->params[0];
m24->scan[1] = m24->params[1];
m24->scan[2] = m24->params[2];
m24->scan[3] = m24->params[3];
m24->scan[4] = m24->params[4];
m24->scan[5] = m24->params[5];
m24->scan[6] = m24->params[6];
break;
case 0x12:
m24->mouse_mode = 1;
m24->scan[0] = m24->params[0];
m24->scan[1] = m24->params[1];
m24->scan[2] = m24->params[2];
break;
default:
pclog("M24: bad keyboard command complete %02X\n", m24->command);
}
}
} else {
m24->command = val;
switch (val) {
case 0x01: /*Self-test*/
break;
case 0x05: /*Read ID*/
kbd_adddata(0x00);
break;
case 0x11:
m24->param = 0;
m24->param_total = 9;
break;
case 0x12:
m24->param = 0;
m24->param_total = 4;
break;
default:
pclog("M24: bad keyboard command %02X\n", val);
}
}
break;
case 0x61:
ppi.pb = val;
timer_process();
timer_update_outstanding();
speaker_update();
speaker_gated = val & 1;
speaker_enable = val & 2;
if (speaker_enable)
was_speaker_enable = 1;
pit_set_gate(&pit, 2, val & 1);
break;
}
}
static uint8_t
kbd_read(uint16_t port, void *priv)
{
olim24_t *m24 = (olim24_t *)priv;
uint8_t ret = 0xff;
switch (port) {
case 0x60:
ret = m24->out;
if (key_queue_start == key_queue_end) {
m24->status &= ~STAT_OFULL;
m24->wantirq = 0;
} else {
m24->out = key_queue[key_queue_start];
key_queue_start = (key_queue_start + 1) & 0xf;
m24->status |= STAT_OFULL;
m24->status &= ~STAT_IFULL;
m24->wantirq = 1;
}
break;
case 0x61:
ret = ppi.pb;
break;
case 0x64:
ret = m24->status;
m24->status &= ~(STAT_RTIMEOUT | STAT_TTIMEOUT);
break;
default:
pclog("\nBad M24 keyboard read %04X\n", port);
}
return(ret);
}
static uint8_t
ms_poll(int x, int y, int z, int b, void *priv)
{
olim24_t *m24 = (olim24_t *)priv;
m24->x += x;
m24->y += y;
if (((key_queue_end - key_queue_start) & 0xf) > 14) return(0xff);
if ((b & 1) && !(m24->b & 1))
kbd_adddata(m24->scan[0]);
if (!(b & 1) && (m24->b & 1))
kbd_adddata(m24->scan[0] | 0x80);
m24->b = (m24->b & ~1) | (b & 1);
if (((key_queue_end - key_queue_start) & 0xf) > 14) return(0xff);
if ((b & 2) && !(m24->b & 2))
kbd_adddata(m24->scan[2]);
if (!(b & 2) && (m24->b & 2))
kbd_adddata(m24->scan[2] | 0x80);
m24->b = (m24->b & ~2) | (b & 2);
if (((key_queue_end - key_queue_start) & 0xf) > 14) return(0xff);
if ((b & 4) && !(m24->b & 4))
kbd_adddata(m24->scan[1]);
if (!(b & 4) && (m24->b & 4))
kbd_adddata(m24->scan[1] | 0x80);
m24->b = (m24->b & ~4) | (b & 4);
if (m24->mouse_mode) {
if (((key_queue_end - key_queue_start) & 0xf) > 12) return(0xff);
if (!m24->x && !m24->y) return(0xff);
m24->y = -m24->y;
if (m24->x < -127) m24->x = -127;
if (m24->x > 127) m24->x = 127;
if (m24->x < -127) m24->x = 0x80 | ((-m24->x) & 0x7f);
if (m24->y < -127) m24->y = -127;
if (m24->y > 127) m24->y = 127;
if (m24->y < -127) m24->y = 0x80 | ((-m24->y) & 0x7f);
kbd_adddata(0xfe);
kbd_adddata(m24->x);
kbd_adddata(m24->y);
m24->x = m24->y = 0;
} else {
while (m24->x < -4) {
if (((key_queue_end - key_queue_start) & 0xf) > 14)
return(0xff);
m24->x += 4;
kbd_adddata(m24->scan[3]);
}
while (m24->x > 4) {
if (((key_queue_end - key_queue_start) & 0xf) > 14)
return(0xff);
m24->x -= 4;
kbd_adddata(m24->scan[4]);
}
while (m24->y < -4) {
if (((key_queue_end - key_queue_start) & 0xf) > 14)
return(0xff);
m24->y += 4;
kbd_adddata(m24->scan[5]);
}
while (m24->y > 4) {
if (((key_queue_end - key_queue_start) & 0xf) > 14)
return(0xff);
m24->y -= 4;
kbd_adddata(m24->scan[6]);
}
}
return(0);
}
static uint8_t
m24_read(uint16_t port, void *priv)
{
switch (port) {
case 0x66:
return 0x00;
case 0x67:
return 0x20 | 0x40 | 0x0C;
}
return(0xff);
}
device_t m24_device = {
"Olivetti M24",
0, 0,
NULL, NULL, NULL,
NULL,
speed_changed,
NULL, NULL,
NULL
};
void
machine_olim24_init(machine_t *model)
{
olim24_t *m24;
m24 = (olim24_t *)malloc(sizeof(olim24_t));
memset(m24, 0x00, sizeof(olim24_t));
machine_common_init(model);
io_sethandler(0x0066, 2, m24_read, NULL, NULL, NULL, NULL, NULL, m24);
/* Initialize the video adapter. */
m24->vram = malloc(0x8000);
overscan_x = overscan_y = 16;
mem_mapping_add(&m24->mapping, 0xb8000, 0x08000,
vid_read, NULL, NULL,
vid_write, NULL, NULL, NULL, 0, m24);
io_sethandler(0x03d0, 16, vid_in, NULL, NULL, vid_out, NULL, NULL, m24);
timer_add(vid_poll, &m24->vidtime, TIMER_ALWAYS_ENABLED, m24);
device_add(&m24_device);
/* Initialize the keyboard. */
m24->status = STAT_LOCK | STAT_CD;
m24->scan[0] = 0x1c;
m24->scan[1] = 0x53;
m24->scan[2] = 0x01;
m24->scan[3] = 0x4b;
m24->scan[4] = 0x4d;
m24->scan[5] = 0x48;
m24->scan[6] = 0x50;
io_sethandler(0x0060, 2,
kbd_read, NULL, NULL, kbd_write, NULL, NULL, m24);
io_sethandler(0x0064, 1,
kbd_read, NULL, NULL, kbd_write, NULL, NULL, m24);
keyboard_send = kbd_adddata;
keyboard_scan = 1;
timer_add(kbd_poll, &keyboard_delay, TIMER_ALWAYS_ENABLED, m24);
/* Tell mouse driver about our internal mouse. */
mouse_setpoll(ms_poll, m24);
if (joystick_type != 7)
device_add(&gameport_device);
/* FIXME: make sure this is correct?? */
nvr_at_init(8);
nmi_init();
}
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