초록 ▼

Data is transferred from a host system to a subsystem connected to the host by a system bus in an efficient manner using one or more virtual first in first out (FIFO) registers in host memory and a corresponding set of virtual FIFOs located in the subsystem memory. A transmission controller controls

Data is transferred from a host system to a subsystem connected to the host by a system bus in an efficient manner using one or more virtual first in first out (FIFO) registers in host memory and a corresponding set of virtual FIFOs located in the subsystem memory. A transmission controller controls the transfer of data from the host FIFOs to the subsystem FIFOs while the subsystem processor reads and processes data from the subsystem FIFO. By accumulating data in the host FIFOs before transfer to the subsystem, overhead associated with starting and stopping data transfers over the system bus is substantially reduced.

대표청구항 ▼

[ What is claimed is:] [1.] A method for efficient transmission of data in an information handling system between a first memory means and a second memory means comprising the steps of:comparing a read pointer and a write pointer associated with a temporary register in said first memory means to det

[ What is claimed is:] [1.] A method for efficient transmission of data in an information handling system between a first memory means and a second memory means comprising the steps of:comparing a read pointer and a write pointer associated with a temporary register in said first memory means to determine if there is sufficient data in said temporary register for efficient transmission between said temporary register and a temporary register in said second memory means;performing a direct memory access transfer if said compare step indicates sufficient data for efficient transfer;updating said read address pointer and said write address pointer to reflect the data transfer;determining if there is another temporary register containing data to be transferred; andrepeating said above steps for a next temporary register.