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Mitac 8080 Service Manual - laptop schematics, notebook ...

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7.3 Debug Tool<br />

<strong>8080</strong> N/B Maintenance<br />

<strong>8080</strong> MB would not support Parallel Port, then we could not plug the Debug Card to PIO Port to get the<br />

Port 378 error code. For this cause, <strong>8080</strong> MB have reserved eight LEDs that are parallel connection with<br />

PIO output lines (Figure 1), when the system BIOS write the error code to Port 378, the LEDs can show the<br />

messages.<br />

U510<br />

Super I/O<br />

PC87393<br />

D10-D17<br />

CL-190G<br />

Figure 1<br />

PIO_D[0:7]<br />

102

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