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Intel Math CoProcessor Installation and Configuration Notes: C-D
Contents:
COMPAQ DESKTOP SYSTEMS - MCP INSTALLATION & SYSTEM CONFIGURATION NOTES: DOCUMENT 3026
*When installing a math coprocessor in any Compaq system, you must run a
SETUP or SYSTEM CONFIGURATION diskette to configure the system for a
math coprocessor. Failure to do so results in a 702 ERROR at bootup.
COMPAQ PROLINIA 4/25s
This system uses the Intel OVERDRIVE Processor, part # DX2ODP50 and
the Intel487 SX. Below are the jumper settings for ProLinea 4/25s.
[Note: "Local bus" system boards can be identified by the presence
of jumpers P7, P8 and P11. "PQFP" system boards can be identified
by the presence of jumper P11]
i486(TM) i487SX
DX or i486SX(TM) i486SX(TM) or
System Jumper i486DX2 (PQFP) (PGA) OverDrive(R)
CPU CPU CPU processor
Original P1 1-2 2-3 1-2
Boards P2 2-3 1-2 2-3
2670 P3 1-2 OPEN 2-3
"PQFP" P1 1-2 1-2 2-3 1-2
Boards P2 2-3 1-2 2-3 2-3
2888 P3 1-2 3-4 3-4 2-3
P11 2-3 1-2 2-3 2-3
"Local bus" P9 1-2 1-2 2-3 1-2
Boards P10 2-3 1-2 1-2 2-3
P11 1-2 3-4 3-4 2-3
P7 2-3 1-2 2-3 2-3
Also, on local bus systems boards, P8 can be used to select between 25
and 33 MHz system clock speeds:
Processor Speed 33 or 66 MHz 25 or 50 MHz
P8 switch position 1-2 2-3
*Note that 486/50-based systems can be upgraded too with the ODPR,
but not with ODP.
Math Additional Notes
Coprocessor
DESKPRO 286E 80287-8 Jumper E11, pins 1-2
287XL Jumper E11, pins 2-3
DESKPRO 386/16 80287-6 Switch 2-ON, 3-ON, 7-ON
80287-8 Switch 2-ON, 3-OFF, 7-ON
Intel387DX-16 Switch 2-ON, 3-OFF, 7-OFF*
A problem was reported where the Intel diagnostics would not
recognize the MCP. The conflict was found to be with the installed
Hercules Graphics card. Changing DIP SW 1 #6 from OFF to ON
remedied the situation.
DESKPRO 386/20 Intel387 DX Set switch 2 on switch block
1 to ON
DESKPRO 386/25i Intel387 DX Switch 2-ON
Computers with a revision "L" system board or earlier (serial
number 4847AR2B0001 or earlier) may see errors while using Lotus
Symphony. Compaq Advanced Diagnostics ver 6.07 can test for this
problem. This information is contained in Compaq Service Bulletin
079 dated December 15, 1988.
DESKPRO 386S Intel387 SX Switch-block 1, Switch 2-ON
COMPAQ PORTABLE SYSTEMS - MCP INSTALLATION & SYSTEM CONFIGURATION NOTES
PORTABLE 8087 Switch block 1, Switch 2 OFF
PORTABLE 386 Intel387 DX Jumper E20, pins 1-2
The math coprocessor socket is located under a "cage" in a corner
of the system board.
C - MCP INSTALLATION & SYSTEM CONFIGURATION NOTES
COMPUADD
810 8087-1
This system uses an NEC V20 Microprocessor; Intel cannot guarantee
compatibility with non-Intel microprocessors. Contact the your
computer's manufacturer for more math coprocessor compatibility
information.
210 287XL Jumper J29, pins 1-2
80287-8 Jumper J29, pins 2-3
212 287XL Jumper J29, pins 1-2
80287-8 Jumper J29, pins 2-3
216 287XL Jumper J1: OPEN, J2: 2-3, J3: 2-3
220 287XL Jumper J1: OPEN, J2: 2-3, J3: 2-3
386/16 80287-8 Switch 2-ON, Switch 3-OFF
Intel387 DX Requires adapter card and cable. To
install the adapter card, remove the 386DX chip, then plug the
386DX and the Intel387 DX into the adapter card. Plug the adapter
card into the 386DX socket and plug the cable into socket U25
(under the hard drive). Remove the 287 plug, if present, from the
287 socket.
386/20 Intel387 DX Jumper J12: OPEN, J13: CLOSED
386/25 Intel387 DX Jumper J12: OPEN, J13: CLOSED
CORDATA
CS 40 8087-2 Switch-block 1, Switch 2-OFF
PC 325 & 400 8087 Switch-block 1, Switch 1-ON
PORTABLE PC 325 8087 Switch-block 1, Switch 1-ON
PORTABLE PC 400 8087 Switch-block 1, Switch 1-ON
CS 5000/16 Intel387 DX Install jumpers JU6, JU13: 1-2,
run CMOS setup
CS 5000/20 Intel387 DX Install jumpers JU6, JU13: 2-3,
run CMOS setup
D - MCP INSTALLATION & SYSTEM CONFIGURATION NOTES
Datavue
25 SERIES PHASE II 8087 Switch-block 1, Switch 4 OFF
Snap 1+1 8087-1 Enable thru CMOS*
Spark 8087-1 Enable thru CMOS*
*To enable the math coprocessor on the SPARK and SNAP systems, run
CMOS Setup by pressing the R key twice within 3 seconds of the
beep while booting.
DELL
320SLi & 325SLi Intel387 SL Requires Proprietary
Card
A safety notice was issued by Dell Corp instructing owners of these
2 systems to discontinue all use of the systems because a potential
fire hazard exists within the systems. Contact Dell at 800-847-4171
for free repair of these systems.
DTK
DLT-2000 Intel387 SX
This system has been recalled by DTK. Contact DTK dealer for more
details.
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