Very little that’s clear has been written about IBM’s revelations of the magic of the Micro Channel, but we understand that the doubling of the top speed to 160M-bytes-per-second (it runs at 20Mbytes-per-second in current PS/2s, but could go to 80Mbps without alteration) – some day in the distant future will be achieved by doubling the clock rate of the bus; the way you get full throughput out of the present incarnation is to use 32- and 64-bit data streaming techniques – sending only a start address and a total block size at the beginning of a block transfer, which has the effect of doubling throughput, and doubling it again by borrowing the address bus when doing block transfers, to achieve an effective bus width of 64 bits.
