Motorola MPC750 用户手册

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页码 4
 
MPC750UMAD/AD
 
1/1999
Rev. 1
 
ª
 
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.
 
Errata to
 
MPC750 RISC Microprocessor UserÕs 
Manual
 
This errata describes corrections to the 
 
MPC750 RISC Microprocessor
UserÕs Manual
 
. These corrections also apply to the MPC740, which is
described in 
 
MPC750 RISC Microprocessor UserÕs Manual
 
. For
convenience, the section number and page number of the errata item in the
userÕs manual are provided.
To locate any published updates for this document, refer to the world-wide
web at http://www.mot.com/powerpc.
 
Section/Page
Changes
 
2.1.1, 2-7 
The implementation note for the decrementer register 
(DEC) should read as follows: 
In the MPC750 the decrementer register is decremented 
and the time base is incremented at a speed that is 
one-fourth the speed of the bus clock.
2.1.2.2, 2-12
In Table 2-4, replace the description of HID0[DBP] 
(bit 1), with the following: