pat@pyuxqq.UUCP (Pat M. Iurilli) (06/17/85)
That about says it all--What's the difference?
Pat Iurilli Bell Communications Research Piscataway, NJ
{allegra,ihnp4}!pyuxqq!patwapd@houxj.UUCP (Bill Dietrich) (06/21/85)
A quick summary off of the top of my head : - Packaging : WE 32000 is a 5-chip (no MMU) or 6-chip (w/ MMU) set mounted on a mini-PC board. All chips are square 84-pin. WE 32100 chip-set is separate chips in rectangular pin-array packages. - Clocking : WE 32000 runs at 7.2 MHz, WE 32100 at 10.0 MHz and 14.0 MHz. - I/O Protocol : the two sets (WE 32000 and WE 32100) are pretty much incompatible at this level, although additional of a WE 3210x chip called the SIU provides the missing signals, making WE 32100 set look like a WE 32000 set. - Software : WE 32100 is object-code upward-compatible with WE 32000, which means object code can be moved from WE 32000 to WE 32100 with no change. Some bugs in WE 32000 are fixed in WE 32100, so it is desirable to recompile to get rid of bug fixes, but the code will run without recompilation. This is almost true of the operating system object code also. The exceptions are that the MMU permission values are changed from WE 32000 to WE 32100, and the WE 32100 has an instruction cache so in some very weird case you may have to add a cache flush instruction. - Other features : WE 32100 has 256-byte on-chip instruction cache, WE 32000 didn't. WE 32100 has new support processor interface. WE 32100 has floating-point chip (MAU) and more peripheral chips coming. WE 32100 has non-maskable interrupt. Bill Dietrich ATTIS Holmdel houxj!wapd