static uint8_t send_read_command(void) { uint8_t drive = 0; uint8_t head = 0; uint8_t cyl = 0; uint8_t sect_addr = 1; uint8_t sect_size = 2; uint8_t eot = 1; uint8_t gap = 0x1b; uint8_t gpl = 0xff; uint8_t msr = 0; uint8_t st0; uint8_t ret = 0; floppy_send(CMD_READ); floppy_send(head << 2 | drive); g_assert(!get_irq(FLOPPY_IRQ)); floppy_send(cyl); floppy_send(head); floppy_send(sect_addr); floppy_send(sect_size); floppy_send(eot); floppy_send(gap); floppy_send(gpl); uint8_t i = 0; uint8_t n = 2; for (; i < n; i++) { msr = inb(FLOPPY_BASE + reg_msr); if (msr == 0xd0) { break; } sleep(1); } if (i >= n) { return 1; } st0 = floppy_recv(); if (st0 != 0x40) { ret = 1; } floppy_recv(); floppy_recv(); floppy_recv(); floppy_recv(); floppy_recv(); floppy_recv(); return ret; }