I tested also other NIC ISA and BOOT-PROM1 floppy and PC boot OK
 
Boot Abit BF6 from BOOT-PROM1 floppy on ISA NIC 3com Etherlink III 509
======================================================================
Booting from Floppy...
enter handle_13:
   a=00000201  b=00000000  c=00000001  d=00000000 ds=0000 es=07c0 ss=e000
  si=00000000 di=00000000 bp=00000000 sp=0000ff90 cs=f000 ip=ce33  f=0202
disk_op d=0x000f0a20 lba=0 buf=0x00007c00 count=1 cmd=2
Floppy_drive_recal 0
Floppy_enable_controller
Floppy_media_sense on drive 0 found rate 0
Booting from 0000:7c00
enter handle_13:
   a=00000000  b=00000000  c=00000000  d=00000000 ds=7c00 es=0000 ss=e000
  si=00000000 di=00000000 bp=00000000 sp=0000ff90 cs=0000 ip=7cc9  f=0202
disk_op d=0x000f0a20 lba=514 buf=0x0000b1b2 count=0 cmd=0
Floppy_disable_controller
Floppy_enable_controller
enter handle_13:
   a=00000800  b=00000000  c=00000000  d=00000000 ds=7c00 es=0000 ss=e000
  si=00000000 di=00000000 bp=00000000 sp=0000ff90 cs=0000 ip=7cd1  f=0202
enter handle_13:
   a=00000204  b=00000000  c=00000001  d=00000000 ds=7c00 es=5000 ss=e000
  si=00000000 di=00005b60 bp=00000000 sp=0000ff90 cs=0000 ip=7ce7  f=0202
disk_op d=0x000f0a20 lba=0 buf=0x00050000 count=4 cmd=2
Floppy_drive_recal 0
Floppy_media_sense on drive 0 found rate 0
enter handle_13:
   a=00000201  b=00000000  c=00000601  d=00000000 ds=5000 es=6000 ss=e000
  si=00000000 di=00005b60 bp=0000002b sp=0000ff90 cs=5000 ip=016c  f=0246
disk_op d=0x000f0a20 lba=216 buf=0x00060000 count=1 cmd=2
enter handle_13:
   a=00000201  b=00000200  c=00000602  d=00000000 ds=5000 es=6000 ss=e000
  si=00000000 di=00005b60 bp=0000002b sp=0000ff90 cs=5000 ip=016c  f=0206
disk_op d=0x000f0a20 lba=217 buf=0x00060200 count=1 cmd=2
enter handle_13:
   a=00000201  b=00000400  c=00000603  d=00000000 ds=5000 es=6000 ss=e000
  si=00000000 di=00005b60 bp=0000002b sp=0000ff90 cs=5000 ip=016c  f=0206
disk_op d=0x000f0a20 lba=218 buf=0x00060400 count=1 cmd=2
enter handle_13:
   a=00000201  b=00000600  c=00000604  d=00000000 ds=5000 es=6000 ss=e000
  si=00000000 di=00005b60 bp=0000002b sp=0000ff90 cs=5000 ip=016c  f=0206
disk_op d=0x000f0a20 lba=219 buf=0x00060600 count=1 cmd=2
enter handle_13:
   a=00000201  b=00000800  c=00000605  d=00000000 ds=5000 es=6000 ss=e000
  si=00000000 di=00005b60 bp=0000002b sp=0000ff90 cs=5000 ip=016c  f=0206
disk_op d=0x000f0a20 lba=220 buf=0x00060800 count=1 cmd=2
enter handle_13:
   a=00000201  b=00000a00  c=00000606  d=00000000 ds=5000 es=6000 ss=e000
  si=00000000 di=00005b60 bp=0000002b sp=0000ff90 cs=5000 ip=016c  f=0206
disk_op d=0x000f0a20 lba=221 buf=0x00060a00 count=1 cmd=2
enter handle_13:
   a=00000201  b=00000c00  c=00000607  d=00000000 ds=5000 es=6000 ss=e000
  si=00000000 di=00005b60 bp=0000002b sp=0000ff90 cs=5000 ip=016c  f=0206
disk_op d=0x000f0a20 lba=222 buf=0x00060c00 count=1 cmd=2
enter handle_13:
   a=00000201  b=00000e00  c=00000608  d=00000000 ds=5000 es=6000 ss=e000
  si=00000000 di=00005b60 bp=0000002b sp=0000ff90 cs=5000 ip=016c  f=0206
disk_op d=0x000f0a20 lba=223 buf=0x00060e00 count=1 cmd=2
enter handle_13:
   a=00000201  b=00001000  c=00000609  d=00000000 ds=5000 es=6000 ss=e000
  si=00000000 di=00005b60 bp=0000002b sp=0000ff90 cs=5000 ip=016c  f=0206
disk_op d=0x000f0a20 lba=224 buf=0x00061000 count=1 cmd=2
enter handle_13:
   a=00000201  b=00001200  c=0000060a  d=00000000 ds=5000 es=6000 ss=e000
  si=00000000 di=00005b60 bp=0000002b sp=0000ff90 cs=5000 ip=016c  f=0206
disk_op d=0x000f0a20 lba=225 buf=0x00061200 count=1 cmd=2
enter handle_13:
   a=00000201  b=00001400  c=0000060b  d=00000000 ds=5000 es=6000 ss=e000
  si=00000000 di=00005b60 bp=0000002b sp=0000ff90 cs=5000 ip=016c  f=0206
disk_op d=0x000f0a20 lba=226 buf=0x00061400 count=1 cmd=2
enter handle_13:
   a=00000201  b=00001600  c=0000060c  d=00000000 ds=5000 es=6000 ss=e000
  si=00000000 di=00005b60 bp=0000002b sp=0000ff90 cs=5000 ip=016c  f=0206
disk_op d=0x000f0a20 lba=227 buf=0x00061600 count=1 cmd=2
enter handle_13:
   a=00000201  b=00001800  c=0000060d  d=00000000 ds=5000 es=6000 ss=e000
  si=00000000 di=00005b60 bp=0000002b sp=0000ff90 cs=5000 ip=016c  f=0206
disk_op d=0x000f0a20 lba=228 buf=0x00061800 count=1 cmd=2
enter handle_13:
   a=00000201  b=00001a00  c=0000060e  d=00000000 ds=5000 es=6000 ss=e000
  si=00000000 di=00005b60 bp=0000002b sp=0000ff90 cs=5000 ip=016c  f=0206
disk_op d=0x000f0a20 lba=229 buf=0x00061a00 count=1 cmd=2
enter handle_13:
   a=00000201  b=00001c00  c=0000060f  d=00000000 ds=5000 es=6000 ss=e000
  si=00000000 di=00005b60 bp=0000002b sp=0000ff90 cs=5000 ip=016c  f=0206
disk_op d=0x000f0a20 lba=230 buf=0x00061c00 count=1 cmd=2
enter handle_13:
   a=00000201  b=00001e00  c=00000610  d=00000000 ds=5000 es=6000 ss=e000
  si=00000000 di=00005b60 bp=0000002b sp=0000ff90 cs=5000 ip=016c  f=0206
disk_op d=0x000f0a20 lba=231 buf=0x00061e00 count=1 cmd=2
enter handle_13:
   a=00000201  b=00002000  c=00000611  d=00000000 ds=5000 es=6000 ss=e000
  si=00000000 di=00005b60 bp=0000002b sp=0000ff90 cs=5000 ip=016c  f=0206
disk_op d=0x000f0a20 lba=232 buf=0x00062000 count=1 cmd=2
enter handle_13:
   a=00000201  b=00002200  c=00000612  d=00000000 ds=5000 es=6000 ss=e000
  si=00000000 di=00005b60 bp=0000002b sp=0000ff90 cs=5000 ip=016c  f=0206
disk_op d=0x000f0a20 lba=233 buf=0x00062200 count=1 cmd=2
enter handle_13:
   a=00000201  b=00002400  c=00000601  d=00000100 ds=5000 es=6000 ss=e000
  si=00000000 di=00005b60 bp=0000002b sp=0000ff90 cs=5000 ip=016c  f=0206
disk_op d=0x000f0a20 lba=234 buf=0x00062400 count=1 cmd=2
enter handle_13:
   a=00000201  b=00002600  c=00000602  d=00000100 ds=5000 es=6000 ss=e000
  si=00000000 di=00005b60 bp=0000002b sp=0000ff90 cs=5000 ip=016c  f=0206
disk_op d=0x000f0a20 lba=235 buf=0x00062600 count=1 cmd=2
enter handle_13:
   a=00000201  b=00002800  c=00000603  d=00000100 ds=5000 es=6000 ss=e000
  si=00000000 di=00005b60 bp=0000002b sp=0000ff90 cs=5000 ip=016c  f=0206
disk_op d=0x000f0a20 lba=236 buf=0x00062800 count=1 cmd=2
enter handle_13:
   a=00000201  b=00002a00  c=00000604  d=00000100 ds=5000 es=6000 ss=e000
  si=00000000 di=00005b60 bp=0000002b sp=0000ff90 cs=5000 ip=016c  f=0206
disk_op d=0x000f0a20 lba=237 buf=0x00062a00 count=1 cmd=2
enter handle_13:
   a=00000201  b=00002c00  c=00000605  d=00000100 ds=5000 es=6000 ss=e000
  si=00000000 di=00005b60 bp=0000002b sp=0000ff90 cs=5000 ip=016c  f=0206
disk_op d=0x000f0a20 lba=238 buf=0x00062c00 count=1 cmd=2
enter handle_13:
   a=00000201  b=00002e00  c=00000606  d=00000100 ds=5000 es=6000 ss=e000
  si=00000000 di=00005b60 bp=0000002b sp=0000ff90 cs=5000 ip=016c  f=0206
disk_op d=0x000f0a20 lba=239 buf=0x00062e00 count=1 cmd=2
enter handle_13:
   a=00000201  b=00003000  c=00000607  d=00000100 ds=5000 es=6000 ss=e000
  si=00000000 di=00005b60 bp=0000002b sp=0000ff90 cs=5000 ip=016c  f=0206
disk_op d=0x000f0a20 lba=240 buf=0x00063000 count=1 cmd=2
enter handle_13:
   a=00000201  b=00003200  c=00000608  d=00000100 ds=5000 es=6000 ss=e000
  si=00000000 di=00005b60 bp=0000002b sp=0000ff90 cs=5000 ip=016c  f=0206
disk_op d=0x000f0a20 lba=241 buf=0x00063200 count=1 cmd=2
enter handle_13:
   a=00000201  b=00003400  c=00000609  d=00000100 ds=5000 es=6000 ss=e000
  si=00000000 di=00005b60 bp=0000002b sp=0000ff90 cs=5000 ip=016c  f=0206
disk_op d=0x000f0a20 lba=242 buf=0x00063400 count=1 cmd=2
enter handle_13:
   a=00000201  b=00003600  c=0000060a  d=00000100 ds=5000 es=6000 ss=e000
  si=00000000 di=00005b60 bp=0000002b sp=0000ff90 cs=5000 ip=016c  f=0206
disk_op d=0x000f0a20 lba=243 buf=0x00063600 count=1 cmd=2
enter handle_13:
   a=00000201  b=00003800  c=0000060b  d=00000100 ds=5000 es=6000 ss=e000
  si=00000000 di=00005b60 bp=0000002b sp=0000ff90 cs=5000 ip=016c  f=0206
disk_op d=0x000f0a20 lba=244 buf=0x00063800 count=1 cmd=2
enter handle_13:
   a=00000201  b=00003a00  c=0000060c  d=00000100 ds=5000 es=6000 ss=e000
  si=00000000 di=00005b60 bp=0000002b sp=0000ff90 cs=5000 ip=016c  f=0206
disk_op d=0x000f0a20 lba=245 buf=0x00063a00 count=1 cmd=2
enter handle_13:
   a=00000201  b=00003c00  c=0000060d  d=00000100 ds=5000 es=6000 ss=e000
  si=00000000 di=00005b60 bp=0000002b sp=0000ff90 cs=5000 ip=016c  f=0206
disk_op d=0x000f0a20 lba=246 buf=0x00063c00 count=1 cmd=2
enter handle_13:
   a=00000201  b=00003e00  c=0000060e  d=00000100 ds=5000 es=6000 ss=e000
  si=00000000 di=00005b60 bp=0000002b sp=0000ff90 cs=5000 ip=016c  f=0206
disk_op d=0x000f0a20 lba=247 buf=0x00063e00 count=1 cmd=2
enter handle_13:
   a=00000201  b=00004000  c=0000060f  d=00000100 ds=5000 es=6000 ss=e000
  si=00000000 di=00005b60 bp=0000002b sp=0000ff90 cs=5000 ip=016c  f=0206
disk_op d=0x000f0a20 lba=248 buf=0x00064000 count=1 cmd=2
enter handle_13:
   a=00000201  b=00004200  c=00000610  d=00000100 ds=5000 es=6000 ss=e000
  si=00000000 di=00005b60 bp=0000002b sp=0000ff90 cs=5000 ip=016c  f=0206
disk_op d=0x000f0a20 lba=249 buf=0x00064200 count=1 cmd=2
enter handle_13:
   a=00000201  b=00004400  c=00000611  d=00000100 ds=5000 es=6000 ss=e000
  si=00000000 di=00005b60 bp=0000002b sp=0000ff90 cs=5000 ip=016c  f=0206
disk_op d=0x000f0a20 lba=250 buf=0x00064400 count=1 cmd=2
enter handle_13:
   a=00000201  b=00004600  c=00000612  d=00000100 ds=5000 es=6000 ss=e000
  si=00000000 di=00005b60 bp=0000002b sp=0000ff90 cs=5000 ip=016c  f=0206
disk_op d=0x000f0a20 lba=251 buf=0x00064600 count=1 cmd=2
enter handle_13:
   a=00000201  b=00004800  c=00000701  d=00000000 ds=5000 es=6000 ss=e000
  si=00000000 di=00005b60 bp=0000002b sp=0000ff90 cs=5000 ip=016c  f=0206
disk_op d=0x000f0a20 lba=252 buf=0x00064800 count=1 cmd=2
enter handle_13:
   a=00000201  b=00004a00  c=00000702  d=00000000 ds=5000 es=6000 ss=e000
  si=00000000 di=00005b60 bp=0000002b sp=0000ff90 cs=5000 ip=016c  f=0206
disk_op d=0x000f0a20 lba=253 buf=0x00064a00 count=1 cmd=2
enter handle_13:
   a=00000201  b=00004c00  c=00000703  d=00000000 ds=5000 es=6000 ss=e000
  si=00000000 di=00005b60 bp=0000002b sp=0000ff90 cs=5000 ip=016c  f=0206
disk_op d=0x000f0a20 lba=254 buf=0x00064c00 count=1 cmd=2
enter handle_13:
   a=00000201  b=00004e00  c=00000704  d=00000000 ds=5000 es=6000 ss=e000
  si=00000000 di=00005b60 bp=0000002b sp=0000ff90 cs=5000 ip=016c  f=0206
disk_op d=0x000f0a20 lba=255 buf=0x00064e00 count=1 cmd=2
enter handle_13:
   a=00000201  b=00005000  c=00000705  d=00000000 ds=5000 es=6000 ss=e000
  si=00000000 di=00005b60 bp=0000002b sp=0000ff90 cs=5000 ip=016c  f=0206
disk_op d=0x000f0a20 lba=256 buf=0x00065000 count=1 cmd=2
enter handle_13:
   a=00000201  b=00005200  c=00000706  d=00000000 ds=5000 es=6000 ss=e000
  si=00000000 di=00005b60 bp=0000002b sp=0000ff90 cs=5000 ip=016c  f=0206
disk_op d=0x000f0a20 lba=257 buf=0x00065200 count=1 cmd=2
enter handle_13:
   a=00000201  b=00005400  c=00000707  d=00000000 ds=5000 es=6000 ss=e000
  si=00000000 di=00005b60 bp=0000002b sp=0000ff90 cs=5000 ip=016c  f=0206
disk_op d=0x000f0a20 lba=258 buf=0x00065400 count=1 cmd=2
enter handle_13:
   a=00000201  b=00005600  c=00000708  d=00000000 ds=5000 es=6000 ss=e000
  si=00000000 di=00005b60 bp=0000002b sp=0000ff90 cs=5000 ip=016c  f=0206
disk_op d=0x000f0a20 lba=259 buf=0x00065600 count=1 cmd=2
enter handle_13:
   a=00000201  b=00005800  c=00000709  d=00000000 ds=5000 es=6000 ss=e000
  si=00000000 di=00005b60 bp=0000002b sp=0000ff90 cs=5000 ip=016c  f=0206
disk_op d=0x000f0a20 lba=260 buf=0x00065800 count=1 cmd=2
enter handle_13:
   a=00000201  b=00005a00  c=0000070a  d=00000000 ds=5000 es=6000 ss=e000
  si=00000000 di=00005b60 bp=0000002b sp=0000ff90 cs=5000 ip=016c  f=0206
disk_op d=0x000f0a20 lba=261 buf=0x00065a00 count=1 cmd=2
enter handle_13:
   a=00000201  b=00005c00  c=0000070b  d=00000000 ds=5000 es=6000 ss=e000
  si=00000000 di=00005b60 bp=0000002b sp=0000ff90 cs=5000 ip=016c  f=0206
disk_op d=0x000f0a20 lba=262 buf=0x00065c00 count=1 cmd=2
enter handle_13:
   a=00000201  b=00005e00  c=0000070c  d=00000000 ds=5000 es=6000 ss=e000
  si=00000000 di=00005b60 bp=0000002b sp=0000ff90 cs=5000 ip=016c  f=0206
disk_op d=0x000f0a20 lba=263 buf=0x00065e00 count=1 cmd=2
enter handle_13:
   a=00000201  b=00006000  c=0000070d  d=00000000 ds=5000 es=6000 ss=e000
  si=00000000 di=00005b60 bp=0000002b sp=0000ff90 cs=5000 ip=016c  f=0206
disk_op d=0x000f0a20 lba=264 buf=0x00066000 count=1 cmd=2
enter handle_13:
   a=00000201  b=00006200  c=0000070e  d=00000000 ds=5000 es=6000 ss=e000
  si=00000000 di=00005b60 bp=0000002b sp=0000ff90 cs=5000 ip=016c  f=0206
disk_op d=0x000f0a20 lba=265 buf=0x00066200 count=1 cmd=2
enter handle_13:
   a=00000201  b=00006400  c=0000070f  d=00000000 ds=5000 es=6000 ss=e000
  si=00000000 di=00005b60 bp=0000002b sp=0000ff90 cs=5000 ip=016c  f=0206
disk_op d=0x000f0a20 lba=266 buf=0x00066400 count=1 cmd=2
enter handle_13:
   a=00000201  b=00006600  c=00000710  d=00000000 ds=5000 es=6000 ss=e000
  si=00000000 di=00005b60 bp=0000002b sp=0000ff90 cs=5000 ip=016c  f=0206
disk_op d=0x000f0a20 lba=267 buf=0x00066600 count=1 cmd=2
enter handle_13:
   a=00000201  b=00006800  c=00000711  d=00000000 ds=5000 es=6000 ss=e000
  si=00000000 di=00005b60 bp=0000002b sp=0000ff90 cs=5000 ip=016c  f=0206
disk_op d=0x000f0a20 lba=268 buf=0x00066800 count=1 cmd=2
enter handle_13:
   a=00000201  b=00006a00  c=00000712  d=00000000 ds=5000 es=6000 ss=e000
  si=00000000 di=00005b60 bp=0000002b sp=0000ff90 cs=5000 ip=016c  f=0206
disk_op d=0x000f0a20 lba=269 buf=0x00066a00 count=1 cmd=2
enter handle_13:
   a=00000201  b=00006c00  c=00000701  d=00000100 ds=5000 es=6000 ss=e000
  si=00000000 di=00005b60 bp=0000002b sp=0000ff90 cs=5000 ip=016c  f=0206
disk_op d=0x000f0a20 lba=270 buf=0x00066c00 count=1 cmd=2
enter handle_13:
   a=00000201  b=00006e00  c=00000702  d=00000100 ds=5000 es=6000 ss=e000
  si=00000000 di=00005b60 bp=0000002b sp=0000ff90 cs=5000 ip=016c  f=0206
disk_op d=0x000f0a20 lba=271 buf=0x00066e00 count=1 cmd=2
enter handle_13:
   a=00000201  b=00007000  c=00000703  d=00000100 ds=5000 es=6000 ss=e000
  si=00000000 di=00005b60 bp=0000002b sp=0000ff90 cs=5000 ip=016c  f=0206
disk_op d=0x000f0a20 lba=272 buf=0x00067000 count=1 cmd=2
enter handle_13:
   a=00000201  b=00007200  c=00000704  d=00000100 ds=5000 es=6000 ss=e000
  si=00000000 di=00005b60 bp=0000002b sp=0000ff90 cs=5000 ip=016c  f=0206
disk_op d=0x000f0a20 lba=273 buf=0x00067200 count=1 cmd=2
enter handle_13:
   a=00000201  b=00007400  c=00000705  d=00000100 ds=5000 es=6000 ss=e000
  si=00000000 di=00005b60 bp=0000002b sp=0000ff90 cs=5000 ip=016c  f=0206
disk_op d=0x000f0a20 lba=274 buf=0x00067400 count=1 cmd=2
enter handle_13:
   a=00000201  b=00007600  c=00000706  d=00000100 ds=5000 es=6000 ss=e000
  si=00000000 di=00005b60 bp=0000002b sp=0000ff90 cs=5000 ip=016c  f=0206
disk_op d=0x000f0a20 lba=275 buf=0x00067600 count=1 cmd=2
enter handle_13:
   a=00000201  b=00007800  c=00000707  d=00000100 ds=5000 es=6000 ss=e000
  si=00000000 di=00005b60 bp=0000002b sp=0000ff90 cs=5000 ip=016c  f=0206
disk_op d=0x000f0a20 lba=276 buf=0x00067800 count=1 cmd=2
enter handle_13:
   a=00000201  b=00007a00  c=00000708  d=00000100 ds=5000 es=6000 ss=e000
  si=00000000 di=00005b60 bp=0000002b sp=0000ff90 cs=5000 ip=016c  f=0206
disk_op d=0x000f0a20 lba=277 buf=0x00067a00 count=1 cmd=2
enter handle_13:
   a=00000201  b=00007c00  c=00000709  d=00000100 ds=5000 es=6000 ss=e000
  si=00000000 di=00005b60 bp=0000002b sp=0000ff90 cs=5000 ip=016c  f=0206
disk_op d=0x000f0a20 lba=278 buf=0x00067c00 count=1 cmd=2
enter handle_13:
   a=00000201  b=00007e00  c=0000070a  d=00000100 ds=5000 es=6000 ss=e000
  si=00000000 di=00005b60 bp=0000002b sp=0000ff90 cs=5000 ip=016c  f=0206
disk_op d=0x000f0a20 lba=279 buf=0x00067e00 count=1 cmd=2
enter handle_13:
   a=00000201  b=00008000  c=0000070b  d=00000100 ds=5000 es=6000 ss=e000
  si=00000000 di=00005b60 bp=0000002b sp=0000ff90 cs=5000 ip=016c  f=0a86
disk_op d=0x000f0a20 lba=280 buf=0x00068000 count=1 cmd=2
enter handle_13:
   a=00000201  b=00008200  c=0000070c  d=00000100 ds=5000 es=6000 ss=e000
  si=00000000 di=00005b60 bp=0000002b sp=0000ff90 cs=5000 ip=016c  f=0286
disk_op d=0x000f0a20 lba=281 buf=0x00068200 count=1 cmd=2
enter handle_13:
   a=00000201  b=00008400  c=0000070d  d=00000100 ds=5000 es=6000 ss=e000
  si=00000000 di=00005b60 bp=0000002b sp=0000ff90 cs=5000 ip=016c  f=0286
disk_op d=0x000f0a20 lba=282 buf=0x00068400 count=1 cmd=2
enter handle_13:
   a=00000201  b=00008600  c=0000070e  d=00000100 ds=5000 es=6000 ss=e000
  si=00000000 di=00005b60 bp=0000002b sp=0000ff90 cs=5000 ip=016c  f=0286
disk_op d=0x000f0a20 lba=283 buf=0x00068600 count=1 cmd=2
enter handle_13:
   a=00000201  b=00008800  c=0000070f  d=00000100 ds=5000 es=6000 ss=e000
  si=00000000 di=00005b60 bp=0000002b sp=0000ff90 cs=5000 ip=016c  f=0286
disk_op d=0x000f0a20 lba=284 buf=0x00068800 count=1 cmd=2
enter handle_13:
   a=00000201  b=00008a00  c=00000710  d=00000100 ds=5000 es=6000 ss=e000
  si=00000000 di=00005b60 bp=0000002b sp=0000ff90 cs=5000 ip=016c  f=0286
disk_op d=0x000f0a20 lba=285 buf=0x00068a00 count=1 cmd=2
enter handle_13:
   a=00000201  b=00008c00  c=00000711  d=00000100 ds=5000 es=6000 ss=e000
  si=00000000 di=00005b60 bp=0000002b sp=0000ff90 cs=5000 ip=016c  f=0286
disk_op d=0x000f0a20 lba=286 buf=0x00068c00 count=1 cmd=2
enter handle_13:
   a=00000201  b=00008e00  c=00000712  d=00000100 ds=5000 es=6000 ss=e000
  si=00000000 di=00005b60 bp=0000002b sp=0000ff90 cs=5000 ip=016c  f=0286
disk_op d=0x000f0a20 lba=287 buf=0x00068e00 count=1 cmd=2
enter handle_13:
   a=00000201  b=00009000  c=00000801  d=00000000 ds=5000 es=6000 ss=e000
  si=00000000 di=00005b60 bp=0000002b sp=0000ff90 cs=5000 ip=016c  f=0286
disk_op d=0x000f0a20 lba=288 buf=0x00069000 count=1 cmd=2
enter handle_13:
   a=000015c0  b=00000000  c=000007b6  d=0000ff00 ds=93c0 es=9bc0 ss=e000
  si=00000000 di=00005b60 bp=00006f0e sp=0000ff90 cs=9bc0 ip=2704  f=0013
enter handle_13:
   a=000000c0  b=00000000  c=00000002  d=0000ff00 ds=93c0 es=9bc0 ss=e000
  si=00000000 di=00005b60 bp=00006f0e sp=0000ff90 cs=9bc0 ip=271e  f=0046
disk_op d=0x000f0a20 lba=70 buf=0x0000b1b2 count=0 cmd=0
Floppy_disable_controller
Floppy_enable_controller
enter handle_13:
   a=00000201  b=00007c00  c=00000001  d=00000000 ds=93c0 es=0000 ss=e000
  si=00000000 di=00005b60 bp=00006f0e sp=0000ff90 cs=9bc0 ip=2737  f=0046
disk_op d=0x000f0a20 lba=0 buf=0x00007c00 count=1 cmd=2
Floppy_drive_recal 0
Floppy_media_sense on drive 0 found rate 0