Method and apparatus for disk address and transfer size management

A system comprising:

• a control processor;
• a computer readable storage medium;
• a register for storing first and second sets of parameters, each set of parameters defining a transaction to transfer data either to or from a computer readable medium;
• and
• a traffic manager for:
• causing execution of a first transaction according to the first set of parameters;
• causing retrieval of the second set of parameters from the register automatically when the first transaction is completed, without waiting for a further command from the control processor;
• and
• causing execution of a second transaction according to the retrieved second set of parameters,
• wherein the register additionally stores an indicator that identifies a number of valid data bytes in a final sector of the data to be stored or retrieved during the transaction, and
• wherein pad data is added to the final sector of the data to be stored or retrieved, to form a full sector of data on the computer readable storage medium, if the number of valid data bytes in the final sector is less than a size of the sector.

A computer readable storage medium encoded with computer program code wherein, when the computer program code is processed by a processor, the processor performs a method comprising time steps of:

• storing first and second sets of parameters in a register, each set of parameters defining a transaction to transfer data to or retrieve data from a storage device;
• performing the first transaction according to a first set of parameters;
• retrieving a second set of parameters from the register automatically when the first transaction is completed, without waiting for a further command from a control processor;
• and
• performing the second transaction according to the retrieved second set of parameters,
• wherein the register additionally stores an indicator that identifies a number of valid data bytes in a filial sector of the data stored or retrieved during the transaction, and
• wherein pad data is added to the final sector of the data stored or retrieved during the transaction, to form a full sector of data on the storage device, if the number of valid data bytes in the final sector is less than a size of the sector.