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

12 Volt Power Supplies
Acoustic Tone indicator
Astable-multivibrator
Optical-pick-up-tachometer
Linear-ic-siren
Vlf Whistler Receiver Circuit
Simple LM317 variable voltage supply does it limit current too
s1d13700 arduino documentation
astable multivibrator transistors
Battery status indicator circuit diagram
Drinking driver detection circuit



Top