mirror of
https://github.com/86Box/86Box.git
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a412ceb4d9
Extensively cleaned up and changed the CD-ROM code; Removed CD-ROM IOCTTL (it was causing performance and stability issues); Turned a lot of things into device_t's; Added the PS/1 Model 2011 XTA and standalone XTA hard disk controllers, ported from Varcem; Numerous FDC fixes for the PS/1 Model 2121; NVR changes ported from Varcem; The PCap code no longer requires libpcap to be compiled; Numerous fixes to various SCSI controllers; Updated NukedOPL to 1.8; Fixes to OpenAL initialization and closing, should give less Audio issues now; Revorked parts of the common (S)VGA code (also based on code from QEMU); Removed the Removable SCSI hard disks (they were a never finished experiment so there was no need to keep them there); Cleaned up the SCSI hard disk and Iomega ZIP code (but more cleanups of that are coming in the future); In some occasions (IDE hard disks in multiple sector mode and SCSI hard disks) the status bar icon is no longer updated, should improve performance a bit; Redid the way the tertiary and quaternary IDE controllers are configured (and they are now device_t's); Extensively reworked the IDE code and fixed quite a few bugs; Fixes to XT MFM, AT MFM, and AT ESDI code; Some changes to XTIDE and MCA ESDI code; Some fixes to the CD-ROM image handler.
95 lines
2.5 KiB
C
95 lines
2.5 KiB
C
/*
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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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*
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* This file is part of the VARCem Project.
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*
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* Definitions for the Intel DMA controller.
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*
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* Version: @(#)dma.h 1.0.2 2018/03/12
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*
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* Authors: Fred N. van Kempen, <decwiz@yahoo.com>
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* Miran Grca, <mgrca8@gmail.com>
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* Sarah Walker, <tommowalker@tommowalker.co.uk>
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*
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* Copyright 2017,2018 Fred N. van Kempen.
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* Copyright 2016-2018 Miran Grca.
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* Copyright 2008-2018 Sarah Walker.
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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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*/
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#ifndef EMU_DMA_H
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# define EMU_DMA_H
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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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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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} dma_t;
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extern dma_t dma[8];
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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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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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extern void writedma2(uint8_t temp);
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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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extern void DMAPageRead(uint32_t PhysAddress, uint8_t *DataRead,
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uint32_t TotalSize);
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extern void DMAPageWrite(uint32_t PhysAddress, const uint8_t *DataWrite,
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uint32_t TotalSize);
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#endif /*EMU_DMA_H*/
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