PHASE
Command
Execution
Result
WRITE DATA
DATA BUS
R/W D7 D6 D5 D4 D3 D2 D1 D0
REMARKS
W MT MFM 0 0 0 1 0 1 Command Codes
W 0 0 0 0 0 HDS DS1 DS0
W
──────── C ────────
Sector ID information prior to
Command execution.
W
──────── H ────────
W
──────── R ────────
W
──────── N ────────
W
─────── EOT ───────
W
─────── GPL ───────
W
─────── DTL ───────
Data transfer between the
FDD and system.
R
─────── ST0 ───────
Status information after Com-
mand execution.
R
─────── ST1 ───────
R
─────── ST2 ───────
R
──────── C ────────
Sector ID information after
Command execution.
R
──────── H ────────
R
──────── R ────────
R
──────── N ────────
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