Title:
【発明の名称】フロツピ-デイスク制御システム
Document Type and Number:
Japanese Patent JP2534643
Kind Code:
B2
Abstract:
When a FORMAT COMMAND is executed, a track density data indicating a track density of 96 TPI or 48 TPI is written into a discrimination area of a disk. When the disk is set into the FDD and is used, a CPU reads out track density data from the disk and produces a flag byte data, including the track density data, and stores it into a main memory. When SEEK COMMAND is executed, a track density of the disk is checked to see if it is 96 TPI or 48 TPI on the basis of the flag byte data. If it is determined that the disk of 48 TPI is set into the FDD for use in driving a disk of 96 TPI according to this discrimination, an FDC outputs a STEP signal for allowing the traveling distance of the head to be doubled as compared to an ordinary distance, thereby controlling the seeking operation by the FDD so as to assuredly move the head to a predetermined desired track.
Inventors:
Haruhiko Banno
Koichi Dewa
Koichi Dewa
Application Number:
JP11509783A
Publication Date:
September 18, 1996
Filing Date:
June 28, 1983
Export Citation:
Assignee:
Toshiba Corporation
International Classes:
G11B20/10; G06F3/06; G11B5/016; G11B20/12; (IPC1-7): G11B20/10
Domestic Patent References:
| JP5860469A | ||||
| JP57103563A | ||||
| JP562184U |
Attorney, Agent or Firm:
Noriyuki Noriyuki (1 person outside)