RISC-based VME board runs at 11 MFLOPS
The HKMIPS/V3500 is a 40-MHz VMEbus-based RISC processor board that uses
a MIPS-based R3500 chip. The R3500 combines the functionality of the R3000
and the R3010 floating point unit. The chip comes with a memory management
unit with a 64-entry, fully associative, translation lookaside buffer.
The V3500 has separate direct-mapped data and instruction cache, each with
64 Kbytes, on-board Ethernet and SCSI interfaces, up to 32 Mbytes of local
DRAM, and up to 1 Mbyte of EPROM. The board also has two programmable
timer/counters, a battery-backed real-time clock, 32 Kbytes of
non-volatile RAM, and four serial ports with support for RS-232-C and
RS-422A protocols. To improve CPU efficiency, the V3500 has a
16-byte-write buffer and a 32-byte-read buffer. These buffers reside on
the local bus along with the cache and are used to decouple the DRAM from
the local bus. The bus interface is a full-slot one-master/slave interface
with a 32-bit data path, 32-bit addressing, and support for
four-level-arbitration, single-data, and block-data transfers. (32 Mbytes
DRAM, $9,995–2 to 3 weeks ARO.) Heurikon Corp., Madison, WI Len Walker
800-356-9602; in WI, 608-831-0900 Fax 608-831-4249
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