Motorola MVME2400 Series Wartungshandbuch PDF herunterladen (Seite 57)

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101

ISA Local Resource Bus

http://www.mcg.mot.com/literature 1-37

Emulated Z8536 CIO Registers and Port Pins

Although the MVME2400 series does not use a Z8536, there are several

functions within this part that are emulated within an ISA Register PLD.

These functions are accessed by reading/writing the Port A, B, C Data

Registers and Control Register. Note that the Pseudo IACK function is not

implemented in the MVME2400 series.

The MVME2400 implements the Z8536 CIO functions according to the

following table.

Z8536 CIO Port Pins

The following table shows the signal function and port mapping for the

Z8536 CIO emulation. The direction of these ports are fixed in hardware.

Table 1-18. Emulated Z8536 Access Registers

PCI I/O Address Function

0000 0844 Port C’s Data Register

0000 0845 Port B’s Data Register

0000 0846 Port A’s Data Register

0000 0847 Control Register

Table 1-19. Z8536 CIO Port Pins Assignment

Port

Signal

Name

Direction Descriptions

PA0 I/O Not used

PA1 I/O Not used

PA2 I/O Not used

PA3 I/O Not used

PA4 I/O Not used

PA5 I/O Not used

1 2 ... 52 53 54 55 56 57 58 59 60 61 62 ... 353 354

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