MPC750UMAD/AD

1/1999 Rev. 1

???

Errata to

MPC750 RISC Microprocessor User???s

Manual

This errata describes corrections to the MPC750 RISC Microprocessor User???s Manual. These corrections also apply to the MPC740, which is described in MPC750 RISC Microprocessor User???s Manual. For convenience, the section number and page number of the errata item in the user???s manual are provided.

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This document contains information on a new product under development by Motorola and IBM. Motorola and IBM reserve the right to change or discontinue this product without notice.

?? Motorola Inc., 1999. All rights reserved.

1 DBP Disable 60x bus address and data parity generation. 0 The system generates address and data parity.

1Parity generation is disabled and parity signals are driven to 0 during bus operations. When parity generation is disabled, all parity checking should also be disabled and parity signals need not be connected.

Replace the description of HID0[BTIC] (bit 26), with the following:

26 BTIC BTIC enable. Used to enable use of the 64-entry branch instruction cache.

0The BTIC contents are invalidated and the BTIC behaves as if it were empty. New entries cannot be added until the BTIC is enabled.

1 The BTIC is enabled and new entries can be added.

2.1.2.4.5, 2-18 Replace Table 2-11 with the following:

Table 2-11. PMC2 Events???MMCR0[26???31] Select Encodings

Table 11-16. PMC2 Events???MMCR0[26???31] Select Encodings

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MPC750UMAD/AD