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1991: ULSI
  week 29, 1991: ULSI Math-Co US83C87, 33 MHz
  week 36, 1991: ULSI Math-Co US83C87, 25 MHz
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ULSI Math-Co US83C87, 33 MHz
ULSI Math-Co US83C87, 33 MHz Top Side
Math-Co
US83C87 33MHz
ULSI
SYSTEMS
(M)(C)1990
9129A3B
ULSI Math-Co US83C87, 33 MHz Back Side
FCJP41
PHILIPPINES
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Core Frequency:33 MHz
Board Frequency:33 MHz
Data bus (ext.):32 Bit
Address bus:32 Bit
Manufactured:week 29/1991
Made in:Philippines
Package Type:Ceramic
PGA-68
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ULSI Math-Co US83C87, 25 MHz
ULSI Math-Co US83C87, 25 MHz Top Side
Math-Co
US83C87 25MHz
ULSI (M)(C)1990
SYSTEMS 9136A3B
ULSI Math-Co US83C87, 25 MHz Back Side
FCLP50B
PHILIPPINES
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Core Frequency:25 MHz
Board Frequency:25 MHz
Data bus (ext.):32 Bit
Address bus:32 Bit
Manufactured:week 36/1991
Made in:Philippines
Package Type:Ceramic
PGA-68
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