SEAGATE TECHNOLOGY, INC.
ST11M, ST11R
|
Data bus: 8-bit, ISA
Size: Half-length, full-height card
Hard drives supported: ST11M: Two MFM ST506/412 drives
ST11R: Two RLL ST506/412 drives
Floppy drives supported: None
CONNECTIONS | |
Function |
Location |
34-pin control cable connector-hard drive |
J2 |
20-pin data cable connector-drive 0 |
J3 |
20-pin data cable connector-drive 1 |
J4 |
5-pin connector-DC power |
J5 |
BIOS & I/O PORT ADDRESS | ||||
BIOS Address |
I/O Port Address |
JP1 |
JP1A | |
» |
C800h |
320-323h |
open |
open |
D000h |
324-327h |
closed |
open | |
D800h |
328-32Bh |
open |
closed | |
E000h (XT only) |
32C-32Fh |
closed |
closed |
ST11M SUPPORTED DISK PARAMETERS | |||
Capacity |
Heads |
Cylinders |
Sectors |
21.4 |
4 |
615 |
17 |
32.1 |
6 |
615 |
17 |
42.5 |
5 |
977 |
17 |
42.8 |
6 |
820 |
17 |
44.5 |
5 |
1024 |
17 |
80.2 |
9 |
1024 |
17 |
ST11R SUPPORTED DISK PARAMETERS | |||
Capacity |
Heads |
Cylinders |
Sectors |
32.7 |
4 |
615 |
26 |
49.1 |
6 |
615 |
26 |
21.1 |
2 |
667 |
31 |
32.7 |
4 |
615 |
26 |
42.9 |
4 |
667 |
31 |
65.5 |
6 |
820 |
26 |
122.7 |
9 |
1024 |
26 |
MISCELLANEOUS TECHNICAL NOTES |
This controller has a built-in low-level format program. To enter the program run the DEBUG utility supplied with DOS and at the prompt enter: G=C800:5. If the error BAD DRIVE!(4) comes up during low-level the controller will stop the format and exit. This is a bug in the controller that causes it to halt on bad sectors that are not flagged in the bad track table. In no way does this mean you have a bad drive! Simply write down the head and cylinder at the point the controller stopped, start the low-level over again and add this to the bad track table. (You must watch closely to catch the head and cylinder; the screen is cleared right after the error is hit.) If it still returns a BAD DRIVE!(4) message on the same head and cylinder, then enter the head and cylinder into the bad track table twice. Once with the actual BFI and once with a BFI 2000 numbers apart from the first. The ST11R is one of the only 8-bit controllers that support 31 sectors per track. The Seagate ST225R hard drive uses 31 sectors per track and thus must use this controller not a regular 26 sectors per track RLL controller. |