Added external Floppy disk controller support.
This commit is contained in:
TC1995
113
src/floppy/fdc.c
113
src/floppy/fdc.c
@@ -35,6 +35,7 @@
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#include <86box/ui.h>
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#include <86box/fdd.h>
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#include <86box/fdc.h>
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#include <86box/fdc_pii15xb.h>
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extern uint64_t motoron[FDD_NUM];
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@@ -89,6 +90,9 @@ int lastbyte=0;
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int floppymodified[4];
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int floppyrate[4];
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int fdc_type;
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#ifdef ENABLE_FDC_LOG
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int fdc_do_log = ENABLE_FDC_LOG;
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@@ -110,6 +114,105 @@ fdc_log(const char *fmt, ...)
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#endif
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typedef struct {
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const char *internal_name;
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const device_t *device;
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} fdc_ext_t;
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static const device_t fdc_none_device = {
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"None",
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0, FDC_NONE,
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NULL, NULL, NULL,
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NULL, NULL, NULL,
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NULL
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};
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static const device_t fdc_internal_device = {
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"Internal Floppy Drive Controller",
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0, FDC_INTERNAL,
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NULL, NULL, NULL,
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NULL, NULL, NULL,
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NULL
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};
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static fdc_ext_t fdc_devices[] = {
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{ "none", &fdc_none_device },
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{ "internal", &fdc_internal_device },
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{ "dtk_pii151b", &fdc_pii151b_device },
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{ "dtk_pii158b", &fdc_pii158b_device },
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{ NULL, NULL }
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};
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char *
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fdc_ext_get_name(int fdc_ext)
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{
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return((char *)fdc_devices[fdc_ext].device->name);
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}
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char *
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fdc_ext_get_internal_name(int fdc_ext)
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{
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return((char *)fdc_devices[fdc_ext].internal_name);
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}
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int
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fdc_ext_get_id(char *s)
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{
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int c = 0;
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while (strlen((char *) fdc_devices[c].name))
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{
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if (!strcmp((char *) fdc_devices[c].name, s))
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return c;
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c++;
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}
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return 0;
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}
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int
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fdc_ext_get_from_internal_name(char *s)
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{
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int c = 0;
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while (fdc_devices[c].internal_name != NULL) {
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if (! strcmp((char *)fdc_devices[c].internal_name, s))
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return(c);
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c++;
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}
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return(0);
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}
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const device_t *
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fdc_ext_get_device(int fdc_ext)
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{
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return(fdc_devices[fdc_ext].device);
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}
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int
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fdc_ext_has_config(int fdc_ext)
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{
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const device_t *dev = fdc_ext_get_device(fdc_ext);
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if (dev == NULL) return(0);
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if (dev->config == NULL) return(0);
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return(1);
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}
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int
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fdc_ext_available(int fdc_ext)
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{
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return(device_available(fdc_devices[fdc_ext].device));
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}
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uint8_t
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fdc_get_current_drive(void)
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{
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@@ -2271,3 +2374,13 @@ const device_t fdc_at_nsc_device = {
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fdc_reset,
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NULL, NULL, NULL
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};
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const device_t fdc_dp8473_device = {
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"NS DP8473 Floppy Drive Controller",
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0,
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FDC_FLAG_NSDP,
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fdc_init,
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fdc_close,
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fdc_reset,
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NULL, NULL, NULL
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};
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221
src/floppy/fdc_pii15xb.c
Normal file
221
src/floppy/fdc_pii15xb.c
Normal file
@@ -0,0 +1,221 @@
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/*
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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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* Implementation of the DTK PII-151B and PII-158B cards.
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*
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* These are DP8473-based floppy controller ISA cards for XT
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* class systems, and allow usage of standard and high-density
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* drives on them. They have their own BIOS which takes over
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* from the standard system BIOS.
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*
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* Author: Fred N. van Kempen, <decwiz@yahoo.com>
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*
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* Copyright 2019 Fred N. van Kempen.
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*
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* Redistribution and use in source and binary forms, with
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* or without modification, are permitted provided that the
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* following conditions are met:
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*
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* 1. Redistributions of source code must retain the entire
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* above notice, this list of conditions and the following
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* disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the
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* following disclaimer in the documentation and/or other
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* materials provided with the distribution.
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*
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* 3. Neither the name of the copyright holder nor the names
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* of its contributors may be used to endorse or promote
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* products derived from this software without specific
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* prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
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* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#define _LARGEFILE_SOURCE
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#define _LARGEFILE64_SOURCE
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#define _GNU_SOURCE
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#include <stdarg.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <wchar.h>
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#define HAVE_STDARG_H
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#include <86box/86box.h>
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#include <86box/device.h>
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#include <86box/io.h>
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#include <86box/mem.h>
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#include <86box/pic.h>
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#include <86box/rom.h>
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#include <86box/machine.h>
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#include <86box/timer.h>
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#include <86box/plat.h>
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#include <86box/ui.h>
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#include <86box/fdc.h>
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#include <86box/fdd.h>
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#include <86box/fdc_pii15xb.h>
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#define ROM_PII_151B L"floppy/dtk/pii-151b.rom"
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#define ROM_PII_158B L"floppy/dtk/pii-158b.rom"
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typedef struct {
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const char *name;
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int type;
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uint32_t bios_addr,
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bios_size;
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rom_t bios_rom;
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fdc_t *fdc;
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} pii_t;
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/* Load and enable a BIOS ROM if we have one, and is enabled. */
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static void
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set_bios(pii_t *dev, const wchar_t *fn)
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{
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uint32_t temp;
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FILE *fp;
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/* Only do this if needed. */
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if ((fn == NULL) || (dev->bios_addr == 0)) return;
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if ((fp = rom_fopen(fn, L"rb")) == NULL) return;
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(void)fseek(fp, 0L, SEEK_END);
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temp = ftell(fp);
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(void)fclose(fp);
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/* Assume 128K, then go down. */
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dev->bios_size = 0x020000;
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while (temp < dev->bios_size)
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dev->bios_size >>= 1;
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/* Create a memory mapping for the space. */
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rom_init(&dev->bios_rom, fn, dev->bios_addr,
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dev->bios_size, dev->bios_size-1, 0, MEM_MAPPING_EXTERNAL);
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}
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static void
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pii_close(void *priv)
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{
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pii_t *dev = (pii_t *)priv;
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free(dev);
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}
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static void *
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pii_init(const device_t *info)
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{
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pii_t *dev;
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dev = (pii_t *)mem_alloc(sizeof(pii_t));
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memset(dev, 0x00, sizeof(pii_t));
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dev->type = info->local;
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dev->bios_addr = device_get_config_hex20("bios_addr");
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if (dev->bios_addr != 0x000000) {
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switch (dev->type)
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case 151:
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set_bios(dev, ROM_PII_151B);
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break;
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case 158:
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set_bios(dev, ROM_PII_158B);
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break;
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}
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/* Attach the DP8473 chip. */
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dev->fdc = device_add(&fdc_dp8473_device);
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//pclog("FDC: %s (I/O=%04X, flags=%08x)\n",
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// info->name, dev->fdc->base_address, dev->fdc->flags);
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return(dev);
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}
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static int pii_151b_available(void)
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{
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return rom_present(ROM_PII_151B);
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}
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static int pii_158_available(void)
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{
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return rom_present(ROM_PII_158B);
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}
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static const device_config_t pii_config[] = {
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{
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"bios_addr", "BIOS address", CONFIG_HEX20, "", 0x0ce000,
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{
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{
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"Disabled", 0
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},
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{
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"CA00H", 0x0ca000
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},
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{
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"CC00H", 0x0cc000
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},
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{
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"CE00H", 0x0ce000
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},
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{
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""
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}
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}
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},
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{
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"speed", "Drive Speed", CONFIG_SELECTION, "", 0,
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{
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{
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"Single", 0
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},
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{
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"Dual", 1
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},
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{
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""
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}
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}
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},
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{
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"", "", -1
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}
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};
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const device_t fdc_pii151b_device = {
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"DTK PII-151B (MiniMicro) Floppy Drive Controller",
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DEVICE_ISA,
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151,
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pii_init, pii_close, NULL,
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pii_151b_available, NULL, NULL,
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pii_config
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};
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const device_t fdc_pii158b_device = {
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"DTK PII-158B (MiniMicro4) Floppy Drive Controller",
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DEVICE_ISA,
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158,
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pii_init, pii_close, NULL,
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pii_158_available, NULL, NULL,
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pii_config
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};
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