72 lines
2.5 KiB
C
72 lines
2.5 KiB
C
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#ifndef CRASHPOWEROS_FLOPPY_H
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#define CRASHPOWEROS_FLOPPY_H
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#define DG144_HEADS 2 /* 每个磁道中的磁头数 (1.44M) */
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#define DG144_TRACKS 80 /* 每个驱动器的磁道数 (1.44M) */
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#define DG144_SPT 18 /* 每个磁头中的的扇区数 (1.44M) */
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#define DG144_GAP3FMT 0x54 /* GAP3格式化 (1.44M) */
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#define DG144_GAP3RW 0x1b /* GAP3（读/写） (1.44M) */
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#define DG168_HEADS 2 /* 每个磁道中的磁头数 (1.68M) */
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#define DG168_TRACKS 80 /* 每个驱动器的磁道数 (1.68M) */
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#define DG168_SPT 21 /* 每个磁头中的的扇区数 (1.68M) */
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#define DG168_GAP3FMT 0x0c /* GAP3格式化 (1.68M) */
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#define DG168_GAP3RW 0x1c /* GAP3（读/写） (1.68M) */
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/* i/o端口定义 */
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#define FDC_DOR (0x3f2) /* 数字输出寄存器 */
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#define FDC_MSR (0x3f4) /* 主要状态寄存器（输入） */
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#define FDC_DRS (0x3f4) /* DRS寄存器 */
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#define FDC_DATA (0x3f5) /* 数据寄存器 */
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#define FDC_DIR (0x3f7) /* 数字输入寄存器（输入） */
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#define FDC_CCR (0x3f7) /* CCR寄存器 */
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/* 软盘命令 */
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#define CMD_SPECIFY (0x03) /* 指定驱动器计时 */
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#define CMD_WRITE (0xc5) /* 写（写入数据的最小单位是扇区） */
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#define CMD_READ (0xe6) /* 读（读取扇区的最小单位是扇区） */
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#define CMD_RECAL (0x07) /* 重新校准软盘 */
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#define CMD_SENSEI (0x08) /* 中断状态 */
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#define CMD_FORMAT (0x4d) /* 格式化磁道 */
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#define CMD_SEEK (0x0f) /* 寻找磁道 */
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#define CMD_VERSION (0x10) /* 获取软盘驱动器的版本 */
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#define SECTORS_ONCE 4
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#include "isr.h"
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typedef struct DrvGeom {
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unsigned char heads;
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unsigned char tracks;
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unsigned char spt; /* 每轨扇区数 */
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} DrvGeom;
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int getbyte();
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void sendbyte(int byte);
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void motoron(void);
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void motoroff(void);
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void recalibrate(void);
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void init_floppy();
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void hts2block(int track, int head, int sector, int* block);
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void block2hts(int block, int* track, int* head, int* sector);
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int seek(int track);
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void wait_floppy_interrupt();
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void reset(void);
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int fdc_rw(int block,
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unsigned char* blockbuff,
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int read,
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unsigned long nosectors);
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void flint(registers_t *reg);
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int write_floppy_for_ths(int track,
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int head,
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int sec,
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unsigned char* blockbuff,
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unsigned long nosec);
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int fdc_rw_ths(int track,
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int head,
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int sector,
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unsigned char* blockbuff,
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int read,
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unsigned long nosectors);
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#endif
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