MD1050-DCC M-Systems Inc., MD1050-DCC Datasheet - Page 34

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

5.1.15 Set Multiple Mode – C6h
This command enables DiskOnChip IDE Pro to perform multiple Read and Write operations and
establishes the block count (counts of sectors making up a block) for these commands. The Sector
Count register is loaded with the number of sectors per block.
If the Sector Count register contains a valid value and the block count is supported, this value is
loaded for all subsequent Read Multiple and Write Multiple commands and execution of these
commands is enabled. If a block count is not supported, an Aborted command error is posted, and
Read Multiple and Write Multiple commands are disabled. If the Sector Count register contains 0
when the command is issued, multiple Read and Write commands are disabled. At power on, or
after a hardware or (unless disabled by a Set Feature command) software reset, the default mode is
Read and Write Multiple disabled.
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Sector Number
Cylinder High
Sector Count
Cylinder Low
Device/Head
Command
Register
Register
Features
Status
Error
BSY
R
7
7
0
DRDY
UNC
DiskOnChip IDE Pro Data Sheet, Rev. 1.5
6
6
0
MC
DF
5
5
0
0
OUTPUT
INPUT
Sector Count per Block
IDNF
DSC
D
4
4
1
0
C6h
MCR
DRQ
3
3
0
0
CORR
ABRT
2
2
0
TKONF
IDX
1
1
0
0
91-SR-012-01-8L
AMNF
ERR
0
0
0