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back2root:ibm-pc-ms-dos:hardware:informations:disk_base_table [2023/01/19 22:04] – créée frater | back2root:ibm-pc-ms-dos:hardware:informations:disk_base_table [2023/01/19 22:04] (Version actuelle) – [Tableau] frater | ||
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====== DBT - Disk Base Table (BIOS INT 13) ====== | ====== DBT - Disk Base Table (BIOS INT 13) ====== | ||
- | + | {{tablelayout? | |
- | ^ Offset ^Size ^ Description | + | ^ Offset |
- | |00 | byte | specify byte 1; step-rate time, head unload time| | + | | |
- | |01 | byte | specify byte 2; head load time, DMA mode| | + | | |
- | |02 | byte | timer ticks to wait before disk motor shutoff| | + | | |
- | |03 | byte | bytes per sector code:\\ 0 - 128 bytes\\ 1 - 256 bytes\\ 2 - 512 bytes\\ 3 - 1024 bytes | | + | | |
- | |04 | byte | sectors per track (last sector number)| | + | | |
- | |05 | byte | inter-block gap length/gap between sectors| | + | | |
- | |06 | byte | data length, if sector length not specified| | + | | |
- | |07 | byte | gap length between sectors for format| | + | | |
- | |08 | byte | fill byte for formatted sectors| | + | | |
- | |09 | byte | head settle time in milliseconds| | + | | |
- | |0A | byte | motor startup time in eighths of a second| | + | | |