Protocols
Jump to navigation
Jump to search
Communication with devices
Here is a commented log when formatting a SSSD floppy disk with the TI disk controller. Actually, this dump was achieved using MESS and putting in some printf lines.
XModem protocol
The XModem protocol transmits data in a sequence of blocks.
| Block | Block | Block | ... | Block |
where each block is defined in this way (numbers tell the number of bytes for each field):
| 1 | 1 | 1 | 128 | 1 |
|---|---|---|---|---|
| SOH | Number | /Number | Data bytes | Checksum |