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MVME5100 Single Board Computer Programmer's Reference Guide

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Port<br />

Pin<br />

IPMC7xx ISA Bus Resources<br />

Table 1-20. Z8536 CIO Port Pins Assignment (Continued)<br />

Signal Name<br />

PB7 ABORT_ Input Status of ABORT# signal<br />

PC0 Reserved I/O Reserved<br />

PC1 Reserved I/O Reserved<br />

PC2 Reserved I/O Reserved<br />

PC3 Reserved I/O<br />

IDREQ_ LLB3_<br />

MODSEL<br />

Note The direction and the polarity of the Z8536’s port pins are<br />

software programmable.<br />

The module ID signals, which are only valid when IDREQ_ is asserted,<br />

indicate the type of the serial module that is installed on either Port 3 or<br />

Port 4. The following table shows how to interpret the MID3-MID0<br />

signals:<br />

Table 1-21. Interpretation of MID3-MID0<br />

MID3<br />

Direction Descriptions<br />

MID2<br />

MID1<br />

MID0<br />

1 X X X X X Invalid module ID<br />

Serial Module Type Module<br />

Assembly<br />

Number<br />

0 0 0 0 0 0 Module 3: EIA232 DCE 01-W3876B01<br />

0 0 0 0 0 1 Module 3: EIA232 DTE 01-W3877B01<br />

0 0 0 0 1 0 Module 3: EIA530 DCE 01-W3878B01<br />

0 0 0 0 1 1 Module 3: EIA530 DTE 01-W3879B01<br />

0 0 1 1 1 1 Module 3 Not Installed<br />

0 1 0 0 0 0 Module 4: EIA232 DCE 01-W3876B01<br />

0 1 0 0 0 1 Module 4: EIA232 DTE 01-W3877B01<br />

0 1 0 0 1 0 Module 3: EIA530 DCE 01-W3878B01<br />

http://www.motorola.com/computer/literature 1-37<br />

1

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