2017-05-30 03:38:38 +02:00
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/*
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2018-04-25 23:51:13 +02:00
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* VARCem Virtual ARchaeological Computer EMulator.
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* An emulator of (mostly) x86-based PC systems and devices,
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* using the ISA,EISA,VLB,MCA and PCI system buses, roughly
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* spanning the era between 1981 and 1995.
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2017-05-30 03:38:38 +02:00
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*
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2018-04-25 23:51:13 +02:00
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* This file is part of the VARCem Project.
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2017-05-30 03:38:38 +02:00
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*
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2018-04-25 23:51:13 +02:00
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* Definitions for the Intel DMA controller.
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2017-05-30 03:38:38 +02:00
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*
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2020-01-14 02:14:39 +01:00
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* Version: @(#)dma.h 1.0.3 2020/01/14
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2017-05-30 03:38:38 +02:00
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*
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2018-04-25 23:51:13 +02:00
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* Authors: Fred N. van Kempen, <decwiz@yahoo.com>
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2017-05-30 03:38:38 +02:00
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* Miran Grca, <mgrca8@gmail.com>
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2018-04-25 23:51:13 +02:00
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* Sarah Walker, <tommowalker@tommowalker.co.uk>
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2017-11-02 02:28:00 -05:00
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*
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2020-01-14 02:14:39 +01:00
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* Copyright 2017-2020 Fred N. van Kempen.
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* Copyright 2016-2020 Miran Grca.
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* Copyright 2008-2020 Sarah Walker.
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2018-04-25 23:51:13 +02:00
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the:
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*
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* Free Software Foundation, Inc.
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* 59 Temple Place - Suite 330
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* Boston, MA 02111-1307
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* USA.
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2017-05-30 03:38:38 +02:00
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*/
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2017-06-04 02:11:19 -04:00
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#ifndef EMU_DMA_H
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# define EMU_DMA_H
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2017-05-30 03:38:38 +02:00
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2016-06-26 00:34:39 +02:00
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2017-11-02 02:28:00 -05:00
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#define DMA_NODATA -1
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#define DMA_OVER 0x10000
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#define DMA_VERIFY 0x20000
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2018-04-25 23:51:13 +02:00
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typedef struct {
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uint32_t ab, ac;
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uint16_t cb;
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int cc;
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int wp;
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uint8_t m, mode;
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uint8_t page;
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uint8_t stat, stat_rq;
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uint8_t command;
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int size;
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uint8_t ps2_mode;
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uint8_t arb_level;
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uint16_t io_addr;
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2018-03-11 18:26:44 +01:00
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} dma_t;
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2018-04-25 23:51:13 +02:00
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extern dma_t dma[8];
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2020-01-14 02:14:39 +01:00
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extern uint8_t dma_e;
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2018-04-25 23:51:13 +02:00
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2016-06-26 00:34:39 +02:00
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2017-06-04 02:11:19 -04:00
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extern void dma_init(void);
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extern void dma16_init(void);
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extern void ps2_dma_init(void);
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extern void dma_reset(void);
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extern int dma_mode(int channel);
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2016-06-26 00:34:39 +02:00
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2017-06-04 02:11:19 -04:00
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extern void readdma0(void);
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extern int readdma1(void);
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extern uint8_t readdma2(void);
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extern int readdma3(void);
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2016-11-12 15:06:38 +01:00
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2017-06-04 02:11:19 -04:00
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extern void writedma2(uint8_t temp);
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2017-05-05 01:49:42 +02:00
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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.
2019-09-20 14:02:30 +02:00
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extern int dma_get_drq(int channel);
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extern void dma_set_drq(int channel, int set);
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2017-06-04 02:11:19 -04:00
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extern int dma_channel_read(int channel);
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extern int dma_channel_write(int channel, uint16_t val);
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extern void dma_alias_set(void);
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extern void dma_alias_remove(void);
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extern void dma_alias_remove_piix(void);
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2017-12-15 21:16:25 -05:00
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extern void DMAPageRead(uint32_t PhysAddress, uint8_t *DataRead,
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2017-06-04 02:11:19 -04:00
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uint32_t TotalSize);
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2017-12-15 21:16:25 -05:00
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extern void DMAPageWrite(uint32_t PhysAddress, const uint8_t *DataWrite,
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2017-06-04 02:11:19 -04:00
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uint32_t TotalSize);
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#endif /*EMU_DMA_H*/
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