claunia/86Box
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Few more changes on the DTK FDC's

Browse Source 
DP8473 now uses the correct flags.
Included few notes related to the DTK FDC.
This commit is contained in:
Panagiotis
2021-01-31 13:09:42 +02:00
committed by GitHub
parent 782d8d9c95
commit 1290fdb065
3 changed files with 43 additions and 32 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
src/floppy/fdc.c
View File

@@ -2426,7 +2426,7 @@ const device_t fdc_at_nsc_device = {
const device_t fdc_dp8473_device = {
"NS DP8473 Floppy Drive Controller",
0,
FDC_FLAG_NSDP,
FDC_FLAG_AT | FDC_FLAG_NSC,
fdc_init,
fdc_close,
fdc_reset,

72
src/floppy/fdc_pii15xb.c
View File

@@ -1,52 +1,63 @@
/*
* 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
* using the ISA,EISA,VLB,MCA and PCI system buses, roughly
* spanning the era between 1981 and 1995.
*
* This file is part of the VARCem Project.
*
* Implementation of the DTK PII-151B and PII-158B cards.
* Implementation of the DTK MiniMicro series of Floppy Disk Controllers.
* Original code from VARCem. Fully rewritten, fixed and improved for 86Box.
*
* These are DP8473-based floppy controller ISA cards for XT
* class systems, and allow usage of standard and high-density
* drives on them. They have their own BIOS which takes over
* from the standard system BIOS.
*
* Author: Fred N. van Kempen, <decwiz@yahoo.com>
* Author: Fred N. van Kempen, <decwiz@yahoo.com>,
* Tiseno100
*
* Copyright 2019 Fred N. van Kempen.
* Copyright 2021 Tiseno100
*
* Redistribution and use in source and binary forms, with
* or without modification, are permitted provided that the
* 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.
* 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.
* 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
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*
Notes:
VARCem uses the DP8473 for both floppy disk controllers. The statement though is wrong.
MiniMicro 4 uses a Zilog Z0765A08PSC(Clone of the NEC 765)
MiniMicro 1 uses a National Semiconductor DP8473(Clone of the NEC 765 with additional NSC commands)
Issues:
MiniMicro 4 WON'T WORK with XT machines. This statement has to be confirmed by someone with the real card itself.
MiniMicro 4 also won't work with the XT FDC which the Zilog claims to be.
*/
#include <stdarg.h>
#include <stdint.h>
#include <stdio.h>
@@ -66,6 +77,7 @@
#include <86box/fdc_ext.h>
#define DTK_VARIANT ((info->local == 158) ? ROM_PII_158B : ROM_PII_151B)
#define DTK_CHIP ((info->local == 158) ? &fdc_at_device : &fdc_dp8473_device)
#define BIOS_ADDR (uint32_t)(device_get_config_hex20("bios_addr") & 0x000fffff)
#define ROM_PII_151B L"roms/floppy/dtk/pii-151b.rom"
#define ROM_PII_158B L"roms/floppy/dtk/pii-158b.rom"
@@ -94,9 +106,9 @@ pii_init(const device_t *info)
if (BIOS_ADDR != 0)
rom_init(&dev->bios_rom, DTK_VARIANT, BIOS_ADDR, 0x2000, 0x1ffff, 0, MEM_MAPPING_EXTERNAL);
device_add(&fdc_at_device); /* Our DP8473 emulation is broken. If fixed this has to be changed! */
device_add(DTK_CHIP);
return (dev);
return dev;
}
static int pii_151b_available(void)