Added the IBM 5161 ISA expansion for PC and XT;
Cleaned up the parallel port emulation, added IRQ support, and made enabling/disabling per port; Added the Award 430NX and the Intel Classic/PCI (Alfredo, 420TX); Finished the 586MC1; Added 8087 emulation; Moved Cyrix 6x86'es to the Dev branch; Sanitized/cleaned up memregs.c/h and intel.c/h; Split the chipsets from machines and sanitized Port 92 emulation; Added support for the 15bpp mode to the Compaq ATI 28800; Moved the MR 386DX and 486 machines to the Dev branch; Ported the new dynamic recompiler from PCem, but it remains in Dev branch until after v2.00; Ported the new timer code from PCem; Cleaned up the CPU table of unused stuff and better optimized its structure; Ported the Open-XT and Open-AT from VARCem, the Open-AT is in the Dev branch; Ported the XT MFM controller rewrite and adding of more controllers (incl. two RLL ones), from VARCem; Added the AHA-1540A and the BusTek BT-542B; Moved the Sumo SCSI-AT to the Dev branch; Minor IDE, FDC, and floppy drive code clean-ups; Made NCR 5380/53C400-based cards' BIOS address configurable; Got rid of the legacy romset variable; Unified (video) buffer and buffer32 into one and make the unified buffer 32-bit; Added the Amstead PPC512 per PCem patch by John Elliott; Switched memory mapping granularity from 16k to 4k (less than 1k not possible due to internal pages); Rewrote the CL-GD 54xx blitter, fixes Win-OS/2 on the 54x6 among other thing; Added the Image Manager 1024 and Professional Graphics Controller per PCem patch by John Elliott and work done on VARCem; Added Headland HT-216, GC-205 and Video 7 VGA 1024i emulation based on PCem commit; Implemented the fuction keys for the Toshiba T1000/T1200/T3100 enhancement; Amstrad MegaPC does now works correctly with non-internal graphics card; The SLiRP code no longer casts a packed struct type to a non-packed struct type; The Xi8088 and PB410a no longer hang on 86Box when PS/2 mouse is not present; The S3 Virge on BeOS is no longer broken (was broken by build #1591); OS/2 2.0 build 6.167 now sees key presses again; Xi8088 now work on CGA again; 86F images converted from either the old or new variants of the HxC MFM format now work correctly; Hardware interrupts with a vector of 0xFF are now handled correctly; OPTi 495SX boards no longer incorrectly have 64 MB maximum RAM when 32 MB is correct; Fixed VNC keyboard input bugs; Fixed AT RTC periodic interrupt - Chicago 58s / 73f / 73g / 81 MIDI play no longer hangs with the build's own VTD driver; Fixed mouse polling with internal mice - Amstrad and Olivetti mice now work correctly; Triones ATAPI DMA driver now correctly reads a file at the end of a CD image with a sectors number not divisible by 4; Compaq Portable now works with all graphics cards; Fixed various MDSI Genius bugs; Added segment limit checks and improved page fault checks for several CPU instructions - Memphis 15xx WINSETUP and Chicago 58s WINDISK.CPL no longer issue a GPF, and some S3 drivers that used to have glitches, now work correctly; Further improved the 808x emulation, also fixes the noticably choppy sound when using 808x CPU's, also fixes #355; OS/2 installer no logner locks up on splash screen on PS/2 Model 70 and 80, fixes #400. Fixed several Amstead bugs, GEM no longer crashes on the Amstrad 1640, fixes #391. Ported John Elliott's Amstrad fixes and improvement from PCem, and fixed the default language so it's correctly Engliish, fixes #278, fixes #389. Fixed a minor IDE timing bug, fixes #388. Fixed Toshiba T1000 RAM issues, fixes #379. Fixed EGA/(S)VGA overscan border handling, fixes #378; Got rid of the now long useless IDE channel 2 auto-removal, fixes #370; Fixed the BIOS files used by the AMSTRAD PC1512, fixes #366; Ported the Unicode CD image file name fix from VARCem, fixes #365; Fixed high density floppy disks on the Xi8088, fixes #359; Fixed some bugs in the Hercules emulation, fixes #346, fixes #358; Fixed the SCSI hard disk mode sense pages, fixes #356; Removed the AMI Unknown 386SX because of impossibility to identify the chipset, closes #349; Fixed bugs in the serial mouse emulation, fixes #344; Compiled 86Box binaries now include all the required .DLL's, fixes #341; Made some combo boxes in the Settings dialog slightly wider, fixes #276.
This commit is contained in:
OBattler
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src/port_92.c
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252
src/port_92.c
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/*
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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 Port 92 used by PS/2 machines and 386+
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* clones.
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*
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* Version: @(#)port_92.c 1.0.0 2019/05/14
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*
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* Authors: Miran Grca, <mgrca8@gmail.com>
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*
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* Copyright 2019 Miran Grca.
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*/
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#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <wchar.h>
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#include "86box.h"
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#include "device.h"
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#ifdef USE_NEW_DYNAREC
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#include "cpu_new/cpu.h"
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#else
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#include "cpu/cpu.h"
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#endif
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#include "timer.h"
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#include "io.h"
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#include "keyboard.h"
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#include "mem.h"
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#include "pit.h"
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#include "port_92.h"
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#define PORT_92_INV 1
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#define PORT_92_WORD 2
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#define PORT_92_PCI 4
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#define PORT_92_RESET 8
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#define PORT_92_A20 16
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static uint8_t
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port_92_readb(uint16_t port, void *priv)
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{
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uint8_t ret = 0x00;
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port_92_t *dev = (port_92_t *) priv;
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if (port == 0x92) {
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/* Return bit 1 directly from mem_a20_alt, so the
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pin can be reset independently of the device. */
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ret = (dev->reg & ~0x03) | (mem_a20_alt & 2) |
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(cpu_alt_reset & 1);
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if (dev->flags & PORT_92_INV)
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ret |= 0xfc;
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else if (dev->flags & PORT_92_PCI)
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ret |= 0x24; /* Intel SIO datasheet says bits 2 and 5 are always 1. */
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} else if (dev->flags & PORT_92_INV)
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ret = 0xff;
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return ret;
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}
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static uint16_t
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port_92_readw(uint16_t port, void *priv)
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{
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return port_92_readb(port, priv);
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}
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static void
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port_92_pulse(void *priv)
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{
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softresetx86();
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cpu_set_edx();
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}
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static void
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port_92_writeb(uint16_t port, uint8_t val, void *priv)
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{
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port_92_t *dev = (port_92_t *) priv;
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if (port != 0x92)
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return;
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dev->reg = val & 0x03;
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if ((mem_a20_alt ^ val) & 2) {
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mem_a20_alt = (val & 2);
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mem_a20_recalc();
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}
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if ((~cpu_alt_reset & val) & 1)
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timer_set_delay_u64(&dev->pulse_timer, dev->pulse_period);
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else if (!(val & 1))
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timer_disable(&dev->pulse_timer);
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cpu_alt_reset = (val & 1);
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if (dev->flags & PORT_92_INV)
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dev->reg |= 0xfc;
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}
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static void
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port_92_writew(uint16_t port, uint16_t val, void *priv)
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{
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port_92_writeb(port, val & 0xff, priv);
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}
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void
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port_92_set_period(void *priv, uint64_t pulse_period)
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{
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port_92_t *dev = (port_92_t *) priv;
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dev->pulse_period = pulse_period;
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}
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void
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port_92_set_features(void *priv, int reset, int a20)
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{
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port_92_t *dev = (port_92_t *) priv;
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dev->flags &= ~(PORT_92_RESET | PORT_92_A20);
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if (reset)
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dev->flags |= PORT_92_RESET;
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timer_disable(&dev->pulse_timer);
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if (a20) {
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dev->flags |= PORT_92_A20;
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mem_a20_alt = (dev->reg & 2);
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} else
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mem_a20_alt = 0;
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mem_a20_recalc();
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}
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void
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port_92_add(void *priv)
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{
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port_92_t *dev = (port_92_t *) priv;
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if (dev->flags & PORT_92_WORD)
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io_sethandler(0x0092, 2,
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port_92_readb, port_92_readw, NULL, port_92_writeb, port_92_writew, NULL, dev);
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else
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io_sethandler(0x0092, 1,
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port_92_readb, NULL, NULL, port_92_writeb, NULL, NULL, dev);
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}
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void
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port_92_remove(void *priv)
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{
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port_92_t *dev = (port_92_t *) priv;
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if (dev->flags & PORT_92_WORD)
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io_removehandler(0x0092, 2,
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port_92_readb, port_92_readw, NULL, port_92_writeb, port_92_writew, NULL, dev);
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else
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io_removehandler(0x0092, 1,
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port_92_readb, NULL, NULL, port_92_writeb, NULL, NULL, dev);
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}
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static void
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port_92_close(void *priv)
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{
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port_92_t *dev = (port_92_t *) priv;
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timer_disable(&dev->pulse_timer);
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free(dev);
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}
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void *
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port_92_init(const device_t *info)
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{
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port_92_t *dev = (port_92_t *) malloc(sizeof(port_92_t));
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memset(dev, 0, sizeof(port_92_t));
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dev->flags = info->local & 0xff;
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timer_add(&dev->pulse_timer, port_92_pulse, dev, 0);
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dev->reg = 0;
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mem_a20_alt = 0;
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mem_a20_recalc();
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cpu_alt_reset = 0;
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flushmmucache();
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port_92_add(dev);
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dev->pulse_period = (uint64_t) (4.0 * SYSCLK * (double)(1ULL << 32ULL));
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dev->flags |= (PORT_92_RESET | PORT_92_A20);
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return dev;
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}
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const device_t port_92_device = {
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"Port 92 Register",
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0,
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0,
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port_92_init, port_92_close, NULL,
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NULL, NULL, NULL,
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NULL
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};
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const device_t port_92_inv_device = {
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"Port 92 Register (inverted bits 2-7)",
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0,
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PORT_92_INV,
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port_92_init, port_92_close, NULL,
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NULL, NULL, NULL,
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NULL
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};
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const device_t port_92_word_device = {
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"Port 92 Register (16-bit)",
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0,
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PORT_92_WORD,
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port_92_init, port_92_close, NULL,
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NULL, NULL, NULL,
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NULL
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};
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const device_t port_92_pci_device = {
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"Port 92 Register (PCI)",
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0,
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PORT_92_PCI,
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port_92_init, port_92_close, NULL,
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NULL, NULL, NULL,
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NULL
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};
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