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Cromemco's XXU processor board provided a bold leap in microcomputer processing power, exceeding previously offered microcomputer speed by a factor of three or more. By integrating a 16.7 MHz MC68020 microprocessor, a 16.7 MHz MC68881 floating-point coprocessor and a 16 KByte two-set associative data and instruction cache onto one S-1Q0/IEEE-69 6 card, the XXU offered performance heretofore unavailable in a general purpose microcomputer at the time. Using Cromemco's 2048KZ memory boards, which featured Cromemco's exclusive double-word transfer extension to the S-100/IEEE-696 bus, data can be moved on the bus at rates as fast as 8.33 megabytes per second. This was more than double the transfer rate of previous Cromemco products.
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This page was last modified on 10/25/2013