outer@utcsri.UUCP (Richard Outerbridge) (03/02/87)
The MacXL (nee LISA) I/O board has an empty, unsocketed spot labelled "WD2001" on it. Now "WD2001" is the name of a Western Digital DES chip; Apple Canada can tell me that the technical literature refers to the chip as a 2Mhz "arithmetic processor", and that requests to California for more information are met with the response "no information available". Given the current atmosphere of paranoia rampant throughout the U.S. cryptologic atmosphere this in itself isn't too surprising. Does anyone know, if the board >had< a 2Mhz WD2001 plugged into it, how you'd get at it? -- Richard Outerbridge <outer@utcsri.UUCP> (416) 961-4757 Payload Deliveries: N 43 39'36", W 79 23'42", Elev. 106.47m.
dgold@apple.UUCP (03/05/87)
In article <4269@utcsri.UUCP> outer@utcsri.UUCP (Richard Outerbridge) writes: >The MacXL I/O board has an empty, unsocketed spot labelled "WD2001" The socket was for a floating point arithmetic coprocessor, not a DES chip. -- David Goldsmith Apple Computer, Inc. MacApp Group AppleLink: GOLDSMITH1 UUCP: {nsc,dual,sun,voder,ucbvax!mtxinu}!apple!dgold CSNET: dgold@apple.CSNET, dgold%apple@CSNET-RELAY BIX: dgoldsmith
oster@lapis.berkeley.edu (David Phillip Oster) (03/06/87)
In article <512@apple.UUCP> dgold@apple.UUCP (David Goldsmith) writes: >In article <4269@utcsri.UUCP> outer@utcsri.UUCP (Richard Outerbridge) writes: >>The MacXL I/O board has an empty, unsocketed spot labelled "WD2001" >The socket was for a floating point arithmetic coprocessor, not a DES chip. According to documents that Apple sent me at the time, the floating point co-processor chip that goes in that socket actually runs slower than doing the floating point in 68000 machine language!