552a87ea3d
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.
237 lines
9.7 KiB
C
237 lines
9.7 KiB
C
/*
|
|
* 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 EEPROM on select ATI cards.
|
|
*
|
|
* Version: @(#)vid_ati_eeprom.c 1.0.2 2018/04/11
|
|
*
|
|
* Authors: Sarah Walker, <http://pcem-emulator.co.uk/>
|
|
* Miran Grca, <mgrca8@gmail.com>
|
|
*
|
|
* Copyright 2008-2018 Sarah Walker.
|
|
* Copyright 2016-2018 Miran Grca.
|
|
*/
|
|
#include <stdio.h>
|
|
#include <stdint.h>
|
|
#include <string.h>
|
|
#include <wchar.h>
|
|
#include "../86box.h"
|
|
#include "../device.h"
|
|
#include "../mem.h"
|
|
#include "../timer.h"
|
|
#include "../nvr.h"
|
|
#include "vid_ati_eeprom.h"
|
|
|
|
|
|
enum
|
|
{
|
|
EEPROM_IDLE,
|
|
EEPROM_WAIT,
|
|
EEPROM_OPCODE,
|
|
EEPROM_INPUT,
|
|
EEPROM_OUTPUT
|
|
};
|
|
|
|
enum
|
|
{
|
|
EEPROM_OP_EW = 4,
|
|
EEPROM_OP_WRITE = 5,
|
|
EEPROM_OP_READ = 6,
|
|
EEPROM_OP_ERASE = 7,
|
|
|
|
EEPROM_OP_WRALMAIN = -1
|
|
};
|
|
|
|
enum
|
|
{
|
|
EEPROM_OP_EWDS = 0,
|
|
EEPROM_OP_WRAL = 1,
|
|
EEPROM_OP_ERAL = 2,
|
|
EEPROM_OP_EWEN = 3
|
|
};
|
|
|
|
void ati_eeprom_load(ati_eeprom_t *eeprom, wchar_t *fn, int type)
|
|
{
|
|
FILE *f;
|
|
eeprom->type = type;
|
|
wcscpy(eeprom->fn, fn);
|
|
f = nvr_fopen(eeprom->fn, L"rb");
|
|
if (!f)
|
|
{
|
|
memset(eeprom->data, 0, eeprom->type ? 512 : 128);
|
|
return;
|
|
}
|
|
fread(eeprom->data, 1, eeprom->type ? 512 : 128, f);
|
|
fclose(f);
|
|
}
|
|
|
|
void ati_eeprom_save(ati_eeprom_t *eeprom)
|
|
{
|
|
FILE *f = nvr_fopen(eeprom->fn, L"wb");
|
|
if (!f) return;
|
|
fwrite(eeprom->data, 1, eeprom->type ? 512 : 128, f);
|
|
fclose(f);
|
|
}
|
|
|
|
void ati_eeprom_write(ati_eeprom_t *eeprom, int ena, int clk, int dat)
|
|
{
|
|
int c;
|
|
if (!ena)
|
|
{
|
|
eeprom->out = 1;
|
|
}
|
|
if (clk && !eeprom->oldclk)
|
|
{
|
|
if (ena && !eeprom->oldena)
|
|
{
|
|
eeprom->state = EEPROM_WAIT;
|
|
eeprom->opcode = 0;
|
|
eeprom->count = 3;
|
|
eeprom->out = 1;
|
|
}
|
|
else if (ena)
|
|
{
|
|
switch (eeprom->state)
|
|
{
|
|
case EEPROM_WAIT:
|
|
if (!dat)
|
|
break;
|
|
eeprom->state = EEPROM_OPCODE;
|
|
/* fall through */
|
|
case EEPROM_OPCODE:
|
|
eeprom->opcode = (eeprom->opcode << 1) | (dat ? 1 : 0);
|
|
eeprom->count--;
|
|
if (!eeprom->count)
|
|
{
|
|
switch (eeprom->opcode)
|
|
{
|
|
case EEPROM_OP_WRITE:
|
|
eeprom->count = eeprom->type ? 24 : 22;
|
|
eeprom->state = EEPROM_INPUT;
|
|
eeprom->dat = 0;
|
|
break;
|
|
case EEPROM_OP_READ:
|
|
eeprom->count = eeprom->type ? 8 : 6;
|
|
eeprom->state = EEPROM_INPUT;
|
|
eeprom->dat = 0;
|
|
break;
|
|
case EEPROM_OP_EW:
|
|
eeprom->count = 2;
|
|
eeprom->state = EEPROM_INPUT;
|
|
eeprom->dat = 0;
|
|
break;
|
|
case EEPROM_OP_ERASE:
|
|
eeprom->count = eeprom->type ? 8 : 6;
|
|
eeprom->state = EEPROM_INPUT;
|
|
eeprom->dat = 0;
|
|
break;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case EEPROM_INPUT:
|
|
eeprom->dat = (eeprom->dat << 1) | (dat ? 1 : 0);
|
|
eeprom->count--;
|
|
if (!eeprom->count)
|
|
{
|
|
switch (eeprom->opcode)
|
|
{
|
|
case EEPROM_OP_WRITE:
|
|
if (!eeprom->wp)
|
|
{
|
|
eeprom->data[(eeprom->dat >> 16) & (eeprom->type ? 255 : 63)] = eeprom->dat & 0xffff;
|
|
ati_eeprom_save(eeprom);
|
|
}
|
|
eeprom->state = EEPROM_IDLE;
|
|
eeprom->out = 1;
|
|
break;
|
|
|
|
case EEPROM_OP_READ:
|
|
eeprom->count = 17;
|
|
eeprom->state = EEPROM_OUTPUT;
|
|
eeprom->dat = eeprom->data[eeprom->dat];
|
|
break;
|
|
case EEPROM_OP_EW:
|
|
switch (eeprom->dat)
|
|
{
|
|
case EEPROM_OP_EWDS:
|
|
eeprom->wp = 1;
|
|
break;
|
|
case EEPROM_OP_WRAL:
|
|
eeprom->opcode = EEPROM_OP_WRALMAIN;
|
|
eeprom->count = 20;
|
|
break;
|
|
case EEPROM_OP_ERAL:
|
|
if (!eeprom->wp)
|
|
{
|
|
memset(eeprom->data, 0xff, 128);
|
|
ati_eeprom_save(eeprom);
|
|
}
|
|
break;
|
|
case EEPROM_OP_EWEN:
|
|
eeprom->wp = 0;
|
|
break;
|
|
}
|
|
eeprom->state = EEPROM_IDLE;
|
|
eeprom->out = 1;
|
|
break;
|
|
|
|
case EEPROM_OP_ERASE:
|
|
if (!eeprom->wp)
|
|
{
|
|
eeprom->data[eeprom->dat] = 0xffff;
|
|
ati_eeprom_save(eeprom);
|
|
}
|
|
eeprom->state = EEPROM_IDLE;
|
|
eeprom->out = 1;
|
|
break;
|
|
|
|
case EEPROM_OP_WRALMAIN:
|
|
if (!eeprom->wp)
|
|
{
|
|
for (c = 0; c < 256; c++)
|
|
eeprom->data[c] = eeprom->dat;
|
|
ati_eeprom_save(eeprom);
|
|
}
|
|
eeprom->state = EEPROM_IDLE;
|
|
eeprom->out = 1;
|
|
break;
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
eeprom->oldena = ena;
|
|
}
|
|
else if (!clk && eeprom->oldclk)
|
|
{
|
|
if (ena)
|
|
{
|
|
switch (eeprom->state)
|
|
{
|
|
case EEPROM_OUTPUT:
|
|
eeprom->out = (eeprom->dat & 0x10000) ? 1 : 0;
|
|
eeprom->dat <<= 1;
|
|
eeprom->count--;
|
|
if (!eeprom->count)
|
|
{
|
|
eeprom->state = EEPROM_IDLE;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
eeprom->oldclk = clk;
|
|
}
|
|
|
|
int ati_eeprom_read(ati_eeprom_t *eeprom)
|
|
{
|
|
return eeprom->out;
|
|
}
|
|
|