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Re: PCI\VEN_8086&DEV_24C6&SUBSYS_80511071&REV_03 - what modem is this on LION sarasota 8050i?

The SM56 drivers appear to add reg entries to HKEY_LOCAL_MACHINE\Software\Motorola\, check if there is anything left like HKEY_LOCAL_MACHINE\Software\Motorola\SMSERIAL\CurrentVersion\some number. Also check if a file like SmSerial.sys is still in \system32 or \system32\drivers and check Task Manager …

Re: What frequency crystal oscillator do I need to run N80387SX-25 FPU with Am386SX/SXL-33 CPU in asynchronous mode?

OK I see your problem but if the mclock was not also internally divide by 2, like the cpu2 clock for the cpu then you could never run a 387sx on a 386sx, it would not fit the the cpu2 clock (which is divided internally by 2). From datasheet "4.1.2 Intel387 MATH COPROCESSOR CLOCK 2 (NUMCLK2) When CKM …

Re: What frequency crystal oscillator do I need to run N80387SX-25 FPU with Am386SX/SXL-33 CPU in asynchronous mode?

OK let me see if I can recall it proper.... in Sync mode both (386 and 387) use same cpu2 clock/crystal and divides by two. In Async the cpu still uses cpu2 clock but fpu uses mclock and divides it by two, the ratio of the fpu clock to cpu2 clock must fall between 66% and 133% for solid proper async …

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