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Correct many file headers to show 86box

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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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src/device/isamem.c
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@@ -1,60 +1,60 @@
/*
* 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 memory expansion board for the ISA Bus.
* Implementation of a memory expansion board for the ISA Bus.
*
* Although modern systems use direct-connect local buses to
* connect the CPU with its memory, originally the main system
* bus(es) were used for that. Memory expension cards could add
* memory to the system through the ISA bus, using a variety of
* techniques.
* Although modern systems use direct-connect local buses to
* connect the CPU with its memory, originally the main system
* bus(es) were used for that. Memory expension cards could add
* memory to the system through the ISA bus, using a variety of
* techniques.
*
* The majority of these boards could provide some (additional)
* conventional (low) memory, extended (high) memory on 80286
* and higher systems, as well as EMS bank-switched memory.
* The majority of these boards could provide some (additional)
* conventional (low) memory, extended (high) memory on 80286
* and higher systems, as well as EMS bank-switched memory.
*
* This implementation uses the LIM 3.2 specifications for EMS.
* This implementation uses the LIM 3.2 specifications for EMS.
*
* With the EMS method, the system's standard memory is expanded
* by means of bank-switching. One or more 'frames' in the upper
* memory area (640K-1024K) are used as viewports into an array
* of RAM pages numbered 0 to N. Each page is defined to be 16KB
* in size, so, for a 1024KB board, 64 such pages are available.
* I/O control registers are used to set up the mappings. More
* modern boards even have multiple 'copies' of those registers,
* which can be switched very fast, to allow for multitasking.
* With the EMS method, the system's standard memory is expanded
* by means of bank-switching. One or more 'frames' in the upper
* memory area (640K-1024K) are used as viewports into an array
* of RAM pages numbered 0 to N. Each page is defined to be 16KB
* in size, so, for a 1024KB board, 64 such pages are available.
* I/O control registers are used to set up the mappings. More
* modern boards even have multiple 'copies' of those registers,
* which can be switched very fast, to allow for multitasking.
*
* TODO: The EV159 is supposed to support 16b EMS transfers, but the
* EMM.sys driver for it doesn't seem to want to do that..
* TODO: The EV159 is supposed to support 16b EMS transfers, but the
* EMM.sys driver for it doesn't seem to want to do that..
*
*
*
* Author: Fred N. van Kempen, <decwiz@yahoo.com>
* Authors: Fred N. van Kempen, <decwiz@yahoo.com>
*
* Copyright 2018 Fred N. van Kempen.
* Copyright 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