ÉÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍ» º º º INTEL MATH COPROCESSORS AND DIAGNOSTIC PROGRAMS º º º ÈÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍͼ 387DX MATH UNIT & IBM ADV. DIAGNOSTICS The 387DX and Inboard 80287 Math Module will fail the IBM Advanced Diagnostics. This happens because the diagnostics reinitialize the 387DX or Math Module after the Inboard 386 has already initialized it. Use the CHKCOP program on the Inboard 386 diskette, instead of the IBM Diagnostics, to test an 387DX or Inboard math module. CHKCOP 2.2 CHKCOP is a Intel's Math CoProcessor test program. It is currently available on the Intel BBS or on disk. If you aren't able to download CHKCOP, you can request a copy from Intel Customer Support. The parameters for CHKCOP are : chkcop /c For continuous testing chkcop n Where n is any number from 1 to 5, the numbers on the command line are the tests which will be skipped. (ie: chkcop /c 1 4 CHKCOP will continuously test on tests 2,3, and 5. Test definitions: Test 1 - Floating point addition Test 2 - Floating point subtraction Test 3 - Floating point multiplication Test 4 - Floating point division Test 5 - Floating point constant comparison "CHKCOP HAS FOUND" AND LOCKS UP When running CHKCOP 2.2, it may lock up under certain circumstances. These include: þ Incorrect dipswitch setting þ A conflict with device drivers and/or TSR's þ A bad chip can also cause this. If CHKCOP locks up, boot to a DOS disk and re-run CHKCOP. ÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍ February 25, 1991 Intel FaxBack # 3064 Page 1 ÉÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍ» º º º INTEL MATH COPROCESSORS AND DIAGNOSTIC PROGRAMS º º º ÈÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍ (continued) ÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍͼ CHKCOP 2.0 INTERMITTENTLY FAILS DIVIDE TEST If CHKCOP intermittently fails the divide test, there may be a timing problem with the system board. Intel has confirmed that Chips & Technologies chip set version 82C211 will cause the failure. Version 82C211C should work OK. The Toshiba T1600 and Dell System 200 both use this chip set. If you experience this problem, examine the system board to see if your computer uses the Chips and Technologies chip set. CHKCOP SEEMS FASTER ON AN 80287 THAN ON AN 287XL Intel 80287 Math CoProcessor chips (6, 8, and 10 MHz) don't support trigonometric functions, but the 287XL does. CHKCOP skips the "Trancendental" test on an 80287, but executes it on the 287XL. Because CHKCOP runs more tests on the 287XL, the total testing time may be longer for the 287XL then for the 80287. SYSTEM DIAGNOSTICS AND THE 287XL Several system diagnostic programs have difficulty detecting a 287XL properly. The following is a list of diagnostic programs that have been tested and their results: Diagnostic Programs With Recognition Problems Diagnostic Program Problem System ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ ÄÄÄÄÄÄÄÄ ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ PC Consultants V2.02 sees 387 Compuadd 216 & 220 NCR User V1.12 sees 387 NCR PC 810 Epson 80287 V2.02 fails Epson Equity II+ & III+ IBM 50/60 Ref V1.04 fails IBM PS/2 mod 50 & 60 IBM Advanced V2.07 fails IBM AT 339 (5170) IBM Starter/Ref V1.01 fails IBM PS/2 mod 30/286 (E-21) Diagnostic Programs Without Problems Diagnostic Program System ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ Compaq V4.0 Rev A Compaq Portable II Compaq Advanced V5.06 Compaq Portable III Compaq V6.10 Rev A Compaq Deskpro 286/12 Epson System V1.01 Epson Equity IIe Wyse Setup & Test V1.09 Wyse PC 286 ÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍ February 25, 1991 Intel FaxBack # 3064 Page 2 ÉÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍ» º º º INTEL MATH COPROCESSORS AND DIAGNOSTIC PROGRAMS º º º ÈÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍ (continued) ÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍͼ GENERAL MATH COPROCESSOR TROUBLESHOOTING Here are some things to check for if you have problems: In IBM PC, is Switch 2 of Switch-block 1 in proper position? Some IBM manuals show the incorrect setting for this switch. Follow the instructions in your Math Coprocessor manual. Look for bent pins. If any are bent, carefully straighten them. Is the chip offset by one or two pins? Is chip backwards? Look for 1978 only copyright on the 4.77 MHz 8088 chip. If found, replace the 8088. Do not replace it if other dates are listed in addition to 1978 or if your computer runs faster than 4.77 MHz. If V20 CPU is installed, contact your computer's manufacturer for compatibility information. Is the coprocessor speed rated too slow for the machine that it is installed in? Check the Intel Math CoProcessor Hardware Compatibility section of FaxBack. If you're unsure whether the chip is operating correctly or whether computer recognizes it, use your modem to get Intel's CHKCOP math coprocessor diagnostic program at (503) 645-6275 or contact Intel Customer Support. ÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍ February 25, 1991 Intel FaxBack # 3064 Page 3