+#ifndef NO_FLOPPY_ASSEMBLER
+ __asm__ (
+ "testl %1,%1"
+ "je 3f"
+"1: inb %w4,%b0"
+ "andb $160,%b0"
+ "cmpb $160,%b0"
+ "jne 2f"
+ "incw %w4"
+ "testl %3,%3"
+ "jne 4f"
+ "inb %w4,%b0"
+ "movb %0,(%2)"
+ "jmp 5f"
+"4: movb (%2),%0"
+ "outb %b0,%w4"
+"5: decw %w4"
+ "outb %0,$0x80"
+ "decl %1"
+ "incl %2"
+ "testl %1,%1"
+ "jne 1b"
+"3: inb %w4,%b0"
+"2: "
+ : "=a" ((char) st),
+ "=c" ((long) virtual_dma_count),
+ "=S" ((long) virtual_dma_addr)
+ : "b" ((long) virtual_dma_mode),
+ "d" ((short) virtual_dma_port+4),
+ "1" ((long) virtual_dma_count),
+ "2" ((long) virtual_dma_addr));
+#else