Values for PS/1 hard disk feature number |
| Value | Description |
|---|---|
|
01h |
select 8-bit data transfers instead of 16-bit |
|
02h |
enable write cache |
|
22h |
Write Same, user-specified area |
|
33h |
disable retries |
|
44h |
set number of ECC bytes for read long/write long (see AH=0Ah,AH=0Bh) |
|
54h |
set cache segments |
|
55h |
disable lookahead |
|
66h |
disable reverting to power-on defaults |
|
77h |
disable error correctioni |
|
81h |
select 16-bit data transfers (default) |
|
82h |
disable write cache |
|
88h |
enable error correction (default) |
|
99h |
enable retries (default) |
|
AAh |
enable lookahead |
|
BBh |
set ECC length for read long/write long to four bytes |
|
CCh |
enable reverting to power-on defaults |
|
DDh |
Write Same, entire disk |