By Inc. Apple Computer
The interior tale on Macintosh know-how This booklet offers unique info at the expertise that has been utilized in Apple desktops for years and is now a part of the Apple/IBM/Motorola universal structure. It explains a number of the uncomplicated layout ideas that experience contributed to the mythical Macintosh functionality and straightforwardness of use. Written for laptop execs, this e-book comprises adequate element for engineers and architects to duplicate many Macintosh positive factors and modes of operation. a lot of the technical info integrated is released the following for the 1st time. The Apple applied sciences for which this booklet offers layout info comprise: The Mac I/O Chip: an built-in circuit that provides desktop designers a number of the significant Macintosh I/O positive factors in a single package deal The Apple computer Bus: an easy connection ability for consumer interface units equivalent to keyboards and mice Macintosh superior SCSI undefined: a flexible controller for the Small desktop process Interface bus Descriptor-Based Direct reminiscence entry: an easy but effective strategy for transporting information to and from peripheral units Miscellaneous Apple applied sciences together with: the Macintosh serial port, the Toolbox ROM, Macintosh Open Firmware, NVRAM, and gear regulate An appendix describes Apple's courses for builders and explains easy methods to start designing Macintosh-compatible items for the typical Reference Platform.
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Extra info for MacIntosh Technology in the Common Hardware Reference Platform
A/ Version Enhance Reg. a. 6 21 Memory Map and Register Addressing Table 6. a. Device 0x41020 Open PIC Global Config Reg. 0 Global Config Reg. a. Device 0x41090 Open PIC Processor Init Processor Init Device 0x410A0 Open PIC IPI 0 Vector/Priority IPI 0 Vector/Priority Device 0x410B0 Open PIC IPI 1 Vector/Priority IPI 1 Vector/Priority Device 0x410C0 Open PIC IPI 2 Vector/Priority IPI 2 Vector/Priority Device 0x410D0 Open PIC IPI 3 Vector/Priority IPI 3 Vector/Priority Device 0X410E0 Open PIC Spurious Vector Spurious Vector Device 0x410F0 Open PIC Timer Frequency Reporting Timer Frequency Reporting Device 0x41100 Open PIC Timer 0 Current Count Timer 0 Current Count Device 0x41110 Open PIC Timer 0 Base Count Timer 0 Base Count 0x41120 Open PIC Timer 0 Vector/Priority Timer 0 Vector/Priority Device 0x41130 Open PIC Timer 0 Destination Timer 0 Destination 0x41140 Open PIC Timer 1 Current Count Timer 1 Current Count Device 0x41150 Open PIC Timer 1 Base Count Timer 1 Base Count 0x41160 Open PIC Timer 1 Vector/Priority Timer 1 Vector/Priority Device 0x41170 Open PIC Timer 1 Destination Timer 1 Destination 0x41180 Open PIC Timer 2 Current Count Timer 2 Current Count Device 0x41190 Open PIC Timer 2 Base Count Timer 2 Base Count 0x411A0 Open PIC Timer 2 Vector/Priority Timer 2 Vector/Priority Device 0x411B0 Open PIC Timer 2 Destination Timer 2 Destination 0x411C0 Open PIC Timer 3 Current Count Timer 3 Current Count Device 0x411D0 Open PIC Timer 3 Base Count Timer 3 Base Count Device Device Device Device Device Device Device 22 Chapter 2 The Mac I/O Chip Table 6.
0 9:31 Reserved These bits always read 0. 4 Sleep Mode The assertion of the Clock Fail Warning (CFW_L) input signal (see Table 45, beginning on page 72) indicates to the MIO chip that sleep mode is approaching. The MIO arbiter removes all GNT signals and waits for the current ownership to end (PciFrame_L and PciIRdy_L deasserted). Once the MIO chip is master again, it drives the PciAD(31:0), PciC_BE(3:0), and PciPar lines low. These signals remain low during sleep. 3344 MHz clocks cleanly at this point.
0 6 MPIC_Enable When this bit is set to 1, the Open PIC cell is enabled and external interrupt sources are sampled through the ExtInt[7:1] and SIOInt lines. When cleared to 0, the Open PIC cell is disabled and all the MIO chip’s internal interrupt 1 sources are multiplexed out through CpuInt[1:0], ExtInt[7:1], and SIOInt. The Reset_CPU[1:0] bits are forced high. 6672 MHz. When it is 1 low, SccPClk becomes 25 MHz. 6672 MHz. When it is low, the SccPClk rate is 25 MHz. 0 9:31 Reserved These bits always read 0.
MacIntosh Technology in the Common Hardware Reference Platform by Inc. Apple Computer