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Correct many file headers to show 86box

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This commit is contained in:
Jasmine Iwanek
2022-10-27 17:08:58 -04:00
parent 94e1f6535c
commit f49d3c7458
52 changed files with 1454 additions and 1454 deletions
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138
src/disk/hdc_xta.c
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@@ -1,76 +1,76 @@
/*
* VARCem Virtual ARchaeological Computer EMulator.
* An emulator of (mostly) x86-based PC systems and devices,
* using the ISA,EISA,VLB,MCA and PCI system buses, roughly
* spanning the era between 1981 and 1995.
* 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 VARCem Project.
* This file is part of the 86Box distribution.
*
* Implementation of a generic IDE-XTA disk controller.
* Implementation of a generic IDE-XTA disk controller.
*
* XTA is the acronym for 'XT-Attached', which was basically
* the XT-counterpart to what we know now as IDE (which is
* also named ATA - AT Attachment.) The basic ideas was to
* put the actual drive controller electronics onto the drive
* itself, and have the host machine just talk to that using
* a simpe, standardized I/O path- hence the name IDE, for
* Integrated Drive Electronics.
* XTA is the acronym for 'XT-Attached', which was basically
* the XT-counterpart to what we know now as IDE (which is
* also named ATA - AT Attachment.) The basic ideas was to
* put the actual drive controller electronics onto the drive
* itself, and have the host machine just talk to that using
* a simpe, standardized I/O path- hence the name IDE, for
* Integrated Drive Electronics.
*
* In the ATA version of IDE, the programming interface of
* the IBM PC/AT (which used the Western Digitial 1002/1003
* controllers) was kept, and, so, ATA-IDE assumes a 16bit
* data path: it reads and writes 16bit words of data. The
* disk drives for this bus commonly have an 'A' suffix to
* identify them as 'ATBUS'.
* In the ATA version of IDE, the programming interface of
* the IBM PC/AT (which used the Western Digitial 1002/1003
* controllers) was kept, and, so, ATA-IDE assumes a 16bit
* data path: it reads and writes 16bit words of data. The
* disk drives for this bus commonly have an 'A' suffix to
* identify them as 'ATBUS'.
*
* In XTA-IDE, which is slightly older, the programming
* interface of the IBM PC/XT (which used the MFM controller
* from Xebec) was kept, and, so, it uses an 8bit data path.
* Disk drives for this bus commonly have the 'X' suffix to
* mark them as being for this XTBUS variant.
* In XTA-IDE, which is slightly older, the programming
* interface of the IBM PC/XT (which used the MFM controller
* from Xebec) was kept, and, so, it uses an 8bit data path.
* Disk drives for this bus commonly have the 'X' suffix to
* mark them as being for this XTBUS variant.
*
* So, XTA and ATA try to do the same thing, but they use
* different ways to achive their goal.
* So, XTA and ATA try to do the same thing, but they use
* different ways to achive their goal.
*
* Also, XTA is **not** the same as XTIDE. XTIDE is a modern
* variant of ATA-IDE, but retro-fitted for use on 8bit XT
* systems: an extra register is used to deal with the extra
* data byte per transfer. XTIDE uses regular IDE drives,
* and uses the regular ATA/IDE programming interface, just
* with the extra register.
* Also, XTA is **not** the same as XTIDE. XTIDE is a modern
* variant of ATA-IDE, but retro-fitted for use on 8bit XT
* systems: an extra register is used to deal with the extra
* data byte per transfer. XTIDE uses regular IDE drives,
* and uses the regular ATA/IDE programming interface, just
* with the extra register.
*
* NOTE: This driver implements both the 'standard' XTA interface,
* sold by Western Digital as the WDXT-140 (no BIOS) and the
* WDXT-150 (with BIOS), as well as some variants customized
* for specific machines.
* NOTE: This driver implements both the 'standard' XTA interface,
* sold by Western Digital as the WDXT-140 (no BIOS) and the
* WDXT-150 (with BIOS), as well as some variants customized
* for specific machines.
*
* NOTE: The XTA interface is 0-based for sector numbers !!
* NOTE: The XTA interface is 0-based for sector numbers !!
*
*
*
* Author: Fred N. van Kempen, <decwiz@yahoo.com>
* Authors: Fred N. van Kempen, <decwiz@yahoo.com>
*
* Based on my earlier HD20 driver for the EuroPC.
* Based on my earlier HD20 driver for the EuroPC.
*
* Copyright 2017,2018 Fred N. van Kempen.
* Copyright 2017,2018 Fred N. van Kempen.
*
* Redistribution and use in source and binary forms, with
* or without modification, are permitted provided that the
* following conditions are met:
* Redistribution and use in source and binary forms, with
* or without modification, are permitted provided that the
* following conditions are met:
*
* 1. Redistributions of source code must retain the entire
* above notice, this list of conditions and the following
* disclaimer.
* 1. Redistributions of source code must retain the entire
* above notice, this list of conditions and the following
* disclaimer.
*
* 2. Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the
* following disclaimer in the documentation and/or other
* materials provided with the distribution.
* 2. Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the
* following disclaimer in the documentation and/or other
* materials provided with the distribution.
*
* 3. Neither the name of the copyright holder nor the names
* of its contributors may be used to endorse or promote
* products derived from this software without specific
* prior written permission.
* 3. Neither the name of the copyright holder nor the names
* of its contributors may be used to endorse or promote
* products derived from this software without specific
* prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
@@ -122,14 +122,14 @@ enum {
/* Command values. */
#define CMD_TEST_READY 0x00
#define CMD_RECALIBRATE 0x01
/* unused 0x02 */
/* unused 0x02 */
#define CMD_READ_SENSE 0x03
#define CMD_FORMAT_DRIVE 0x04
#define CMD_READ_VERIFY 0x05
#define CMD_FORMAT_TRACK 0x06
#define CMD_FORMAT_BAD_TRACK 0x07
#define CMD_READ_SECTORS 0x08
/* unused 0x09 */
/* unused 0x09 */
#define CMD_WRITE_SECTORS 0x0a
#define CMD_SEEK 0x0b
#define CMD_SET_DRIVE_PARAMS 0x0c
@@ -137,8 +137,8 @@ enum {
#define CMD_READ_SECTOR_BUFFER 0x0e
#define CMD_WRITE_SECTOR_BUFFER 0x0f
#define CMD_RAM_DIAGS 0xe0
/* unused 0xe1 */
/* unused 0xe2 */
/* unused 0xe1 */
/* unused 0xe2 */
#define CMD_DRIVE_DIAGS 0xe3
#define CMD_CTRL_DIAGS 0xe4
#define CMD_READ_LONG 0xe5
@@ -184,20 +184,20 @@ enum {
/* The device control block (6 bytes) */
#pragma pack(push, 1)
typedef struct {
uint8_t cmd; /* [7:5] class, [4:0] opcode */
uint8_t cmd; /* [7:5] class, [4:0] opcode */
uint8_t head : 5, /* [4:0] head number */
drvsel : 1, /* [5] drive select */
mbz : 2; /* [7:6] 00 */
uint8_t head : 5, /* [4:0] head number */
drvsel : 1, /* [5] drive select */
mbz : 2; /* [7:6] 00 */
uint8_t sector : 6, /* [5:0] sector number 0-63 */
cyl_high : 2; /* [7:6] cylinder [9:8] bits */
uint8_t sector : 6, /* [5:0] sector number 0-63 */
cyl_high : 2; /* [7:6] cylinder [9:8] bits */
uint8_t cyl_low; /* [7:0] cylinder [7:0] bits */
uint8_t cyl_low; /* [7:0] cylinder [7:0] bits */
uint8_t count; /* [7:0] blk count / interleave */
uint8_t count; /* [7:0] blk count / interleave */
uint8_t ctrl; /* [7:0] control field */
uint8_t ctrl; /* [7:0] control field */
} dcb_t;
#pragma pack(pop)
@@ -246,8 +246,8 @@ typedef struct {
/* Controller state. */
int8_t state; /* controller state */
uint8_t sense; /* current SENSE ERROR value */
uint8_t status; /* current operational status */
uint8_t sense; /* current SENSE ERROR value */
uint8_t status; /* current operational status */
uint8_t intr;
uint64_t callback;
pc_timer_t timer;