MD1050-DCC M-Systems Inc., MD1050-DCC Datasheet - Page 40

• Manufacturer Part Number: MD1050-DCC
• Description: Diskonchip Ide Pro Data Sheet
• Manufacturer: M-Systems Inc.

5.1.21 Write Multiple Command – C5h
This command is similar to the Write Sectors command. DiskOnChip IDE Pro sets BSY within 400
nsec of accepting the command. Interrupts are not issued for every sector, but rather on the transfer
of a block that contains the number of sectors defined by the Set Multiple command. Command
execution is identical to the Write Sectors operation, except that the number of sectors defined by
the Set Multiple command is transferred without intervening interrupts.
DRQ qualification of the transfer is required only at the start of the data block, not on each sector.
The block count of sectors to be transferred without intervening interrupts is programmed by the Set
Multiple Mode command, which must be executed prior to the Write Multiple command.
39
Sector Number
Sector Number
Cylinder High
Cylinder High
Sector Count
Sector Count
Cylinder Low
Device/Head
Cylinder Low
Command
Register
Register
Features
Status
Error
BSY
R
7
7
0
DRDY
Cylinder[15:8] or LBA[23:16] of the first sector/LBA to transfer
UNC
LBA
Cylinder[7:0] or LBA[15:8] of the first sector/LBA to transfer
DiskOnChip IDE Pro Data Sheet, Rev. 1.5
6
6
0
Sector[7:0] or LBA[7:0] of the first sector/LBA to transfer
MC
DF
5
5
0
OUTPUT
INPUT
IDNF
DSC
Sector count
D
4
4
1
C5h
MCR
DRQ
3
H[3:0] or LBA[27:24] of the starting
3
0
CORR
ABRT
2
2
sector/LBA
TKONF
IDX
1
1
0
0
91-SR-012-01-8L
AMNF
ERR
0
0
0