Re: Mid '80s uP from Western Electric/AT&T -- WE212
From: Rafael Deliano (Rafael_Deliano_at_t-online.de)
Date: 06/29/04
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Date: Tue, 29 Jun 2004 09:06:07 +0200
> The 32-bit CPU was probably the CRISP.
> Hobbit was a bit later.
CRISP was about 1986 ( there is a 6 page description
in the ASPLOS11 proceedings 1987 ).
Hobbit ATT92010 in 1992 ; ATT92020
in 1994 ( there are short descriptions in "Byte"-magazin )
"AT&T Bell Labs Record" April 1984
announces start of production of a WE32100:
WE32100 32 bit CPU ; 180k transistors ; 1,75um ; 18 MHz
By 1985 the chipset included:
WE32101 MMU ; WE32101 Clock ; WE32103 DRAM-Controller ;
WE32104 DMA-Controller ; WE32105 system interface unit ;
WE32106 MAU "math acceleration unit" = FPU ;
In the 1988 IC-Master there are several pages covering
the softwarecompatible 1um 24 MHz WE32200 CPU
WE32201 MMU ; WE32204 DMA ; WE32206 MAU
Earlier chips mentioned:
WE32000 16 Bit CPU 1981 ; ca. 100k transistors ; 2,5um
( the WE32001 was used in the AT&T 5620 DMD Display/Terminal
about 1984 )
WE8000 developed in 1976 CMOS microprocessor ;
7,5um later 5um ( in 1981 ) ; 10k transistors ; 0,2 MIPS
WE4000 "microcomputer" = single chip controller CMOS ;
0,1 MIPS ; 30k transistors ;
There is a 4 page description in the Bell System Technical
Journal 1979 p. 959:
1024 - 3840 x 4 ROM ; 80 - 192 x 4 RAM ; 43 instructions
Operates on 4, 8, 12, 16 bit data
Names changed over time:
1980 it was MAC-8 ; by 1981 BELLMAC-4, BELLMAC-8, BELLMAC-32
MfG JRD
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