Coprocessor-socket-debugger


Posted on Jul 23, 2012

The IBM PC debugger plugs into the PC`s math-coprocessor socket.The 8288 bus controller, IC1, regenerates control signals from the processor`s status signals, SO, Sl, and S2. Reset LED Dllights if reset is active and holding the processor. Clock status LED D3 indicates that the processor is receiving a toggling clock signal.


Coprocessor-socket-debugger
Click here to download the full size of the above Circuit.

The address-decode logic detects when the processor is doing a jump-on-reset to the PC"s BIOS ROM"s power-on; self-test then detects a fatal error and halts the processor.




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

Basement LEDs
the design of the gas detector of LPC221
Flasher and Fader LED Circuit Using IC 555
5.3W Amplifier With Surround System
analog to digital converter pic
Linear RF Power Meter
8-Channel Air Sampler and Biodetection
Panasonic M12H switching power supply circuit diagram



Top