98 lines
2.6 KiB
C
98 lines
2.6 KiB
C
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/*
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* 86Box A hypervisor and IBM PC system emulator that specializes in
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* running old operating systems and software designed for IBM
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* PC systems and compatibles from 1981 through fairly recent
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* system designs based on the PCI bus.
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*
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* This file is part of the 86Box distribution.
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*
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* Vision Systems LBA Enhancer emulation.
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*
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*
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*
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* Authors: Cacodemon345
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*
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* Copyright 2024 Cacodemon345
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*/
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#include <stdarg.h>
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#include <stdio.h>
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#include <stdint.h>
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#include <string.h>
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#include <stdlib.h>
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#define HAVE_STDARG_H
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#include <86box/86box.h>
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#include <86box/io.h>
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#include <86box/device.h>
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#include <86box/mem.h>
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#include <86box/rom.h>
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#include <86box/plat_unused.h>
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typedef struct lba_enhancer_t
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{
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rom_t rom;
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} lba_enhancer_t;
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#define BIOS_LBA_ENHANCER "roms/hdd/misc/lbaenhancer.bin"
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void* lba_enhancer_init(const device_t* info)
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{
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lba_enhancer_t* lba_enhancer = (lba_enhancer_t*)calloc(1, sizeof(lba_enhancer_t));
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rom_init(&lba_enhancer->rom, BIOS_LBA_ENHANCER, device_get_config_hex20("bios_addr"), 0x4000, 0x3fff, 0, MEM_MAPPING_EXTERNAL);
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return lba_enhancer;
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}
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void lba_enhancer_close(void* priv)
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{
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lba_enhancer_t* lba_enhancer = (lba_enhancer_t*)priv;
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free(lba_enhancer->rom.rom);
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free(priv);
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return;
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}
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static int
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lba_enhancer_available(void)
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{
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return rom_present(BIOS_LBA_ENHANCER);
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}
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// clang-format off
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static const device_config_t lba_enhancer_config[] = {
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{
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.name = "bios_addr",
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.description = "BIOS Address",
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.type = CONFIG_HEX20,
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.default_string = "",
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.default_int = 0xc8000,
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.file_filter = "",
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.spinner = { 0 },
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.selection = {
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{ .description = "C800H", .value = 0xc8000 },
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{ .description = "CC00H", .value = 0xcc000 },
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{ .description = "D000H", .value = 0xd0000 },
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{ .description = "D400H", .value = 0xd4000 },
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{ .description = "D800H", .value = 0xd8000 },
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{ .description = "DC00H", .value = 0xdc000 },
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{ .description = "" }
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},
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},
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{ .name = "", .description = "", .type = CONFIG_END }
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};
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// clang-format on
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const device_t lba_enhancer_device = {
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.name = "Vision Systems LBA Enhancer",
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.internal_name = "lba_enhancer",
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.flags = DEVICE_AT,
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.local = 0,
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.init = lba_enhancer_init,
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.close = lba_enhancer_close,
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.reset = NULL,
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{ .available = lba_enhancer_available },
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.speed_changed = NULL,
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.force_redraw = NULL,
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.config = lba_enhancer_config
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};
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